Pub Date : 2025-09-02DOI: 10.1016/j.jcou.2025.103209
Francesc Sastre , Jonathan van den Ham , Jelle Rohlfs , Nicole Meulendijks , Anthony Sanderse , Natalia Mazur , Man Xu , Martin Eschen , Alberto Gori , Daria Burova , Bjorn Joos , Ken Elen , An Hardy , Marlies K. Van Bael , Pascal Buskens
Fiber Bragg based – fiber optic sensors were applied in operando to monitor the temperature of illuminated plasmonic catalysts at various depths inside the catalyst bed during light-driven CO2 hydrogenation. Multipoint temperature measurements showed that single-sided illumination induced a pronounced vertical temperature gradient, which remained stable throughout the reaction. This behaviour was observed in two light driven reactions: the exothermic Sabatier reaction catalysed by Ru/Al2O3 and the endothermic reverse water gas shift reaction catalysed by Au/TiO2. The temperature gradient, attributed to a combination of limited light penetration depth and poor thermal conductivity of the catalyst bed, must be taken into account in kinetic studies. Metal loading and gas composition had a strong influence on the temperature gradient, while gas flow rate and reaction heat had a negligible effect. For catalyst temperatures up to 250˚ C, radiative heat loss accounted for approximately 15 % of the incident light power. Our study demonstrates that accurate in operando temperature monitoring at multiple positions inside the catalyst bed is essential to distinguish between thermal and non-thermal contributors in plasmon catalysis.
{"title":"The impact of heat transfer in packed plasmonic catalyst beds on light-driven CO2 hydrogenation","authors":"Francesc Sastre , Jonathan van den Ham , Jelle Rohlfs , Nicole Meulendijks , Anthony Sanderse , Natalia Mazur , Man Xu , Martin Eschen , Alberto Gori , Daria Burova , Bjorn Joos , Ken Elen , An Hardy , Marlies K. Van Bael , Pascal Buskens","doi":"10.1016/j.jcou.2025.103209","DOIUrl":"10.1016/j.jcou.2025.103209","url":null,"abstract":"<div><div>Fiber Bragg based – fiber optic sensors were applied in operando to monitor the temperature of illuminated plasmonic catalysts at various depths inside the catalyst bed during light-driven CO<sub>2</sub> hydrogenation. Multipoint temperature measurements showed that single-sided illumination induced a pronounced vertical temperature gradient, which remained stable throughout the reaction. This behaviour was observed in two light driven reactions: the exothermic Sabatier reaction catalysed by Ru/Al<sub>2</sub>O<sub>3</sub> and the endothermic reverse water gas shift reaction catalysed by Au/TiO<sub>2</sub>. The temperature gradient, attributed to a combination of limited light penetration depth and poor thermal conductivity of the catalyst bed, must be taken into account in kinetic studies. Metal loading and gas composition had a strong influence on the temperature gradient, while gas flow rate and reaction heat had a negligible effect. For catalyst temperatures up to 250˚ C, radiative heat loss accounted for approximately 15 % of the incident light power. Our study demonstrates that accurate in operando temperature monitoring at multiple positions inside the catalyst bed is essential to distinguish between thermal and non-thermal contributors in plasmon catalysis.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103209"},"PeriodicalIF":8.4,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/j.jcou.2025.103210
Minglin Xu , Størker T. Moe , Inga Marie Aasen , Magne Hillestad
Gas fermentation using acetogens via the Wood–Ljungdahl pathway offers a sustainable route for converting CO₂ and hydrogen into valuable chemicals. This study presents a comprehensive techno-economic analysis of a 50,000 t/a acetic acid (AcOH) production plant based on gas fermentation. Three designs, composed of four process systems, are proposed and evaluated. A mathematical model of the gas fermentation process in a bubble column has been developed. The complete process is also modeled and simulated with Aspen Plus®, and the equipment costs are primarily estimated using Aspen Process Economic Analyzer™. A sensitivity analysis is conducted to evaluate the impacts of fluctuations in hydrogen prices and variations in project life on economic viability. With a hydrogen price of 5 USD/kg and CO₂ price of 60 USD/t, AcOH production integrated with a single pressure swing adsorption for hydrogen recovery is recognized as the optimal design due to its lowest total production costs of 1073.61 USD/t AcOH, with hydrogen comprising 64 %. The total capital investment for this design is 54.49 million USD. Assuming an AcOH selling price of 1 USD/kg, the plant generates an after-tax ROI of 15.66 %, and an IRR of 13.24 %, NPV of 62.61 million USD, breakeven hydrogen price is 6.18 USD/kg, over a 20-year project life. This work offers essential insights into the economic viability of CO₂-based gas fermentation and bolsters future efforts aimed at process optimization, cost reduction, and commercial deployment.
通过Wood-Ljungdahl途径使用氧气进行气体发酵，为将二氧化碳和氢气转化为有价值的化学物质提供了一条可持续的途径。对某年产5万吨醋酸（AcOH）气体发酵装置进行了综合技术经济分析。提出并评价了由四个工艺系统组成的三种设计方案。建立了气泡塔内气体发酵过程的数学模型。整个过程也使用Aspen Plus®进行建模和模拟，设备成本主要使用Aspen process Economic Analyzer™进行估算。进行了敏感性分析，以评估氢价格波动和项目寿命变化对经济可行性的影响。在氢气价格为5美元/kg， CO₂价格为60美元/t的情况下，AcOH生产与单次变压吸附制氢结合的最佳设计方案，AcOH的总生产成本最低，为1073.61美元/t，氢气含量为64% %。本次设计总投资5449万美元。假设AcOH销售价格为1美元/公斤，该工厂的税后投资回报率为15.66 %，内部收益率为13.24 %，净现值为6262万美元，盈亏平衡氢气价格为6.18美元/公斤，项目寿命为20年。这项工作为基于二氧化碳的气体发酵的经济可行性提供了重要的见解，并支持了未来旨在优化工艺、降低成本和商业部署的努力。
{"title":"Techno-economic analysis of CO₂-based gas fermentation for acetic acid production","authors":"Minglin Xu , Størker T. Moe , Inga Marie Aasen , Magne Hillestad","doi":"10.1016/j.jcou.2025.103210","DOIUrl":"10.1016/j.jcou.2025.103210","url":null,"abstract":"<div><div>Gas fermentation using acetogens via the Wood–Ljungdahl pathway offers a sustainable route for converting CO₂ and hydrogen into valuable chemicals. This study presents a comprehensive techno-economic analysis of a 50,000 t/a acetic acid (AcOH) production plant based on gas fermentation. Three designs, composed of four process systems, are proposed and evaluated. A mathematical model of the gas fermentation process in a bubble column has been developed. The complete process is also modeled and simulated with Aspen Plus®, and the equipment costs are primarily estimated using Aspen Process Economic Analyzer™. A sensitivity analysis is conducted to evaluate the impacts of fluctuations in hydrogen prices and variations in project life on economic viability. With a hydrogen price of 5 USD/kg and CO₂ price of 60 USD/t, AcOH production integrated with a single pressure swing adsorption for hydrogen recovery is recognized as the optimal design due to its lowest total production costs of 1073.61 USD/t AcOH, with hydrogen comprising 64 %. The total capital investment for this design is 54.49 million USD. Assuming an AcOH selling price of 1 USD/kg, the plant generates an after-tax ROI of 15.66 %, and an IRR of 13.24 %, NPV of 62.61 million USD, breakeven hydrogen price is 6.18 USD/kg, over a 20-year project life. This work offers essential insights into the economic viability of CO₂-based gas fermentation and bolsters future efforts aimed at process optimization, cost reduction, and commercial deployment.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103210"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/j.jcou.2025.103214
Jan Fydrich, Mirjana Minceva, Simon Vlad Luca
Hemp (Cannabis sativa L.) flowers are the primary source for a wide range of cannabidiol (CBD)-based formulations, particularly CBD oils. Traditional production methods typically involve two separate steps: extracting active compounds and incorporating them into a carrier oil. Although supercritical CO2 (scCO2) extraction has been applied individually to hemp flowers and oily seeds, a single-step co-extraction approach has not been previously explored. This study investigates the feasibility of scCO2 co-extraction of hemp flowers with oily seeds to produce CBD oils with tunable cannabinoid concentrations. Three seed types (i.e., hemp, sesame, and sunflower) were screened, and key process parameters were systematically varied, including flower-to-seed ratios, pressure, temperature, and CO2 flow rate. Suitable conditions were determined to be a flower-to-seed ratio of 1:3, a pressure of 300 bar, a temperature of 40 °C, and a CO2 flow rate of 12.6 g/min. With the proposed approach, CBD oils containing up to 10 wt% CBD and a complex nutritional profile, including essential fatty acids and minor bioactives such as tocopherols, carotenoids, and chlorophylls, could be obtained. Importantly, cannabinoid concentration could be adjusted by varying the flower-to-seed ratio. This proof-of-concept process demonstrates that scCO2 co-extraction offers a sustainable alternative for producing high-quality CBD-rich oils, with potential for industrial applications.
{"title":"Single-step production of ready-to-use cannabidiol oils via supercritical CO2 co-extraction of hemp flowers and seeds","authors":"Jan Fydrich, Mirjana Minceva, Simon Vlad Luca","doi":"10.1016/j.jcou.2025.103214","DOIUrl":"10.1016/j.jcou.2025.103214","url":null,"abstract":"<div><div>Hemp (<em>Cannabis sativa</em> L.) flowers are the primary source for a wide range of cannabidiol (CBD)-based formulations, particularly CBD oils. Traditional production methods typically involve two separate steps: extracting active compounds and incorporating them into a carrier oil. Although supercritical CO<sub>2</sub> (scCO<sub>2</sub>) extraction has been applied individually to hemp flowers and oily seeds, a single-step co-extraction approach has not been previously explored. This study investigates the feasibility of scCO<sub>2</sub> co-extraction of hemp flowers with oily seeds to produce CBD oils with tunable cannabinoid concentrations. Three seed types (i.e., hemp, sesame, and sunflower) were screened, and key process parameters were systematically varied, including flower-to-seed ratios, pressure, temperature, and CO<sub>2</sub> flow rate. Suitable conditions were determined to be a flower-to-seed ratio of 1:3, a pressure of 300 bar, a temperature of 40 °C, and a CO<sub>2</sub> flow rate of 12.6 g/min. With the proposed approach, CBD oils containing up to 10 wt% CBD and a complex nutritional profile, including essential fatty acids and minor bioactives such as tocopherols, carotenoids, and chlorophylls, could be obtained. Importantly, cannabinoid concentration could be adjusted by varying the flower-to-seed ratio. This proof-of-concept process demonstrates that scCO<sub>2</sub> co-extraction offers a sustainable alternative for producing high-quality CBD-rich oils, with potential for industrial applications.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103214"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-30DOI: 10.1016/j.jcou.2025.103212
Rui Qu, Wei Xie, Wei Wei, Hongyi Suo, Yusheng Qin
Carbon dioxide (CO2), which is closely associated with global warming and climate change, also represents a highly valuable C1 resource for its remarkable features such as natural abundance, easy availability, and renewability. As a thermodynamically stable molecule, CO2 demands high energy for activation and chemical conversion. Although metal complexes have demonstrated remarkable catalytic performance in homogeneous systems for CO2 hydrogenations, carboxylation reactions, and carbonate formation reactions, they are associated with limitations such as product coloration, inherent toxicity, and complicated preparation process. Metal-free organoboron catalysts offer an effective solution to these limitations, providing a safer and more efficient alternative for catalyzing CO2 conversion reactions. This review summarizes recent advances in organoboron catalysts, focusing on their structural diversity-including intermolecular/binary systems, intramolecular/bifunctional configurations and polymeric architectures-along with their corresponding synthetic strategies. After fully discussing the structural types of catalysts and the CO2 activation mechanisms, the applications of organoboron catalysts are explored in two directions, including the CO2 reduction reactions (CO2RRs) and the carbonate formation reactions. Notably, comparative evaluation reveals that the organoboron catalysts applied in CO2RRs, particularly intermolecular and intramolecular frustrated Lewis pairs (FLPs), despite differences in the acidity of the organoboron and its substituent groups, have been demonstrated to be effective in catalyzing the coupling or copolymerization of CO2 and epoxides. This cross-reaction applicability of organoborons establishes valuable precedents for innovating novel CO2 conversion pathways.
{"title":"Organoboron catalysts: From structural design to functional application in CO2 conversions","authors":"Rui Qu, Wei Xie, Wei Wei, Hongyi Suo, Yusheng Qin","doi":"10.1016/j.jcou.2025.103212","DOIUrl":"10.1016/j.jcou.2025.103212","url":null,"abstract":"<div><div>Carbon dioxide (CO<sub>2</sub>), which is closely associated with global warming and climate change, also represents a highly valuable C1 resource for its remarkable features such as natural abundance, easy availability, and renewability. As a thermodynamically stable molecule, CO<sub>2</sub> demands high energy for activation and chemical conversion. Although metal complexes have demonstrated remarkable catalytic performance in homogeneous systems for CO<sub>2</sub> hydrogenations, carboxylation reactions, and carbonate formation reactions, they are associated with limitations such as product coloration, inherent toxicity, and complicated preparation process. Metal-free organoboron catalysts offer an effective solution to these limitations, providing a safer and more efficient alternative for catalyzing CO<sub>2</sub> conversion reactions. This review summarizes recent advances in organoboron catalysts, focusing on their structural diversity-including intermolecular/binary systems, intramolecular/bifunctional configurations and polymeric architectures-along with their corresponding synthetic strategies. After fully discussing the structural types of catalysts and the CO<sub>2</sub> activation mechanisms, the applications of organoboron catalysts are explored in two directions, including the CO<sub>2</sub> reduction reactions (CO<sub>2</sub>RRs) and the carbonate formation reactions. Notably, comparative evaluation reveals that the organoboron catalysts applied in CO<sub>2</sub>RRs, particularly intermolecular and intramolecular frustrated Lewis pairs (FLPs), despite differences in the acidity of the organoboron and its substituent groups, have been demonstrated to be effective in catalyzing the coupling or copolymerization of CO<sub>2</sub> and epoxides. This cross-reaction applicability of organoborons establishes valuable precedents for innovating novel CO<sub>2</sub> conversion pathways.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103212"},"PeriodicalIF":8.4,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-29DOI: 10.1016/j.jcou.2025.103189
André L.A. Marinho , Carlotta Panzone , Antoinette Maarawi Chidraoui , Arthur Roussey , Alban Chappaz , Corentin Chatelier , José Vachaud , Vincent Faucheux
The CO2 hydrogenation process towards the production of liquid hydrocarbons appears to be a promising path to decarbonize the aviation sector. This process usually proceeds through tandem catalysis following two main pathways: Fischer-Tropsch (CO2-FTS) and Methanol (CO2-MeOH) routes, where the pathway is dependent on the catalytic material. In this review, we explore recent progress made in both routes for the production of liquid hydrocarbons, especially in light of growing knowledge about the optimization of catalyst composition. We systematically analyze the effect of different metal dopants and promoters in the catalytic performance and evolution of catalytic properties within the solid material. We also summarize key developments in kinetic and mechanism models, as well as highlight the reactor technologies and current applications in the world. Based on the analysis of more than 300 catalytic tests results available in the literature, our critical assessment reveals that the CO2-FTS route is more suitable to the production of long-chain hydrocarbons in actual stage, reaching higher selectivity towards liquid hydrocarbons at high CO2 single-pass conversion. This review presents a pioneer study of data analysis comparing both routes, meanwhile helping academics and industry in their decision-making process for developing an economically viable industrial process.
{"title":"State-of-the-art direct CO2 hydrogenation to liquid hydrocarbons: Analysis of Fischer–Tropsch and methanol-mediated routes","authors":"André L.A. Marinho , Carlotta Panzone , Antoinette Maarawi Chidraoui , Arthur Roussey , Alban Chappaz , Corentin Chatelier , José Vachaud , Vincent Faucheux","doi":"10.1016/j.jcou.2025.103189","DOIUrl":"10.1016/j.jcou.2025.103189","url":null,"abstract":"<div><div>The CO<sub>2</sub> hydrogenation process towards the production of liquid hydrocarbons appears to be a promising path to decarbonize the aviation sector. This process usually proceeds through tandem catalysis following two main pathways: Fischer-Tropsch (CO<sub>2</sub>-FTS) and Methanol (CO<sub>2</sub>-MeOH) routes, where the pathway is dependent on the catalytic material. In this review, we explore recent progress made in both routes for the production of liquid hydrocarbons, especially in light of growing knowledge about the optimization of catalyst composition. We systematically analyze the effect of different metal dopants and promoters in the catalytic performance and evolution of catalytic properties within the solid material. We also summarize key developments in kinetic and mechanism models, as well as highlight the reactor technologies and current applications in the world. Based on the analysis of more than 300 catalytic tests results available in the literature, our critical assessment reveals that the CO<sub>2</sub>-FTS route is more suitable to the production of long-chain hydrocarbons in actual stage, reaching higher selectivity towards liquid hydrocarbons at high CO<sub>2</sub> single-pass conversion. This review presents a pioneer study of data analysis comparing both routes, meanwhile helping academics and industry in their decision-making process for developing an economically viable industrial process.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103189"},"PeriodicalIF":8.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-26DOI: 10.1016/j.jcou.2025.103208
Fuzhen Chen , Shengnan Wu , Sen Yang , Jingchen Zhang , Xiaoyue Hao , Wangcan Deng , Jianwei Gu
Formation water evaporation has received limited attention in the context of CO2 saline aquifer storage. To address this gap, a CO2–H2O phase equilibrium model was developed and validated to characterize subsurface water evaporation behavior. The results reveal that the presence of gaseous or supercritical CO2 is a prerequisite for effective water evaporation, which is primarily governed by thermodynamic conditions and phase transitions. While rising temperature consistently promotes evaporation, the influence of pressure exhibits a turning trend–initially suppressing, then enhancing it. Core–scale simulations reveal that formation water migration is governed by two coupled mechanisms: displacement and evaporation. Formation water evaporation eliminates the constraint of irreducible water saturation, thereby expanding the effective pore space for fluid flow. To overcome the limitations of conventional relative permeability curves that ignore evaporation effects, a correction method is proposed to improve the accuracy of gas–liquid flow simulation. Field–scale simulation results demonstrate that evaporation is most pronounced in near–wellbore region, extending from several to dozens of meters due to cumulative effects. This localized phenomenon is governed by high pore–volume displacement and low water vapor saturation. Although salt precipitation induced by evaporation can reduce permeability, this adverse effect is generally outweighed by the enhancement resulting from the reduction in irreducible water saturation. Overall, evaporation influences fluid flow primarily through four mechanisms: reducing irreducible water mole fraction, enhancing gas–phase flow capacity, lowering CO2 injection pressure, and improving effective pore–throat radius for fluid flow. Collectively, formation water evaporation exerts a predominantly positive effect on CO2 saline aquifer storage.
{"title":"The role of formation water evaporation in fluid flow processes within porous media for CO2 saline aquifer storage","authors":"Fuzhen Chen , Shengnan Wu , Sen Yang , Jingchen Zhang , Xiaoyue Hao , Wangcan Deng , Jianwei Gu","doi":"10.1016/j.jcou.2025.103208","DOIUrl":"10.1016/j.jcou.2025.103208","url":null,"abstract":"<div><div>Formation water evaporation has received limited attention in the context of CO<sub>2</sub> saline aquifer storage. To address this gap, a CO<sub>2</sub>–H<sub>2</sub>O phase equilibrium model was developed and validated to characterize subsurface water evaporation behavior. The results reveal that the presence of gaseous or supercritical CO<sub>2</sub> is a prerequisite for effective water evaporation, which is primarily governed by thermodynamic conditions and phase transitions. While rising temperature consistently promotes evaporation, the influence of pressure exhibits a turning trend–initially suppressing, then enhancing it. Core–scale simulations reveal that formation water migration is governed by two coupled mechanisms: displacement and evaporation. Formation water evaporation eliminates the constraint of irreducible water saturation, thereby expanding the effective pore space for fluid flow. To overcome the limitations of conventional relative permeability curves that ignore evaporation effects, a correction method is proposed to improve the accuracy of gas–liquid flow simulation. Field–scale simulation results demonstrate that evaporation is most pronounced in near–wellbore region, extending from several to dozens of meters due to cumulative effects. This localized phenomenon is governed by high pore–volume displacement and low water vapor saturation. Although salt precipitation induced by evaporation can reduce permeability, this adverse effect is generally outweighed by the enhancement resulting from the reduction in irreducible water saturation. Overall, evaporation influences fluid flow primarily through four mechanisms: reducing irreducible water mole fraction, enhancing gas–phase flow capacity, lowering CO<sub>2</sub> injection pressure, and improving effective pore–throat radius for fluid flow. Collectively, formation water evaporation exerts a predominantly positive effect on CO<sub>2</sub> saline aquifer storage.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103208"},"PeriodicalIF":8.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-26DOI: 10.1016/j.jcou.2025.103203
María Escamilla, Alfonso Caballero, Gerardo Colón
The authors regret the correction of the Acknowledgments. The abbreviation of the Institution is added (MICIU instead of MICIN). The authors would like to apologise for any inconvenience caused.
{"title":"Corrigendum to “Improved CO selectivity during CO2 hydrogenation by bimetallic copper-cobalt supported SBA-15” [J. CO2 Utilization 92 (2025) 103032]","authors":"María Escamilla, Alfonso Caballero, Gerardo Colón","doi":"10.1016/j.jcou.2025.103203","DOIUrl":"10.1016/j.jcou.2025.103203","url":null,"abstract":"<div><div>The authors regret the correction of the Acknowledgments. The abbreviation of the Institution is added (MICIU instead of MICIN). The authors would like to apologise for any inconvenience caused.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103203"},"PeriodicalIF":8.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-25DOI: 10.1016/j.jcou.2025.103200
Karolina Koselak , Marcin Kozanecki , Sławomir Kadłubowski , Stanisław Porwański
In this study we presented the preparation of eleven unknow in the literature surfactants based on mono- and disaccharides which contained urea bridge and 10, 12 or 14 carbon atoms in the hydrophobic chain in their structure. The surfactants were obtained in the SAW reaction in which CO2 is used as one of the substrates with yields ranging from 16 % to 99 %. Some of the physicochemical properties were also investigated. The sugar derivatives are not soluble in water but shortening the hydrophobic chain to 8 carbon atoms increased their solubility. The HBL parameter indicated that the obtained surfactants are, among others, detergents, emulsifiers and wetting agents, which is also confirmed by results of the contact angle study. Compounds 29 forms aggregates or maybe even micelles above concentration of 1 mmol/l. The compounds also exhibit physical gel forming properties.
{"title":"Carbon dioxide as a substrate in the Staudinger-aza-Wittig reaction leading to new sugar surfactants with potential use in cosmetics industry","authors":"Karolina Koselak , Marcin Kozanecki , Sławomir Kadłubowski , Stanisław Porwański","doi":"10.1016/j.jcou.2025.103200","DOIUrl":"10.1016/j.jcou.2025.103200","url":null,"abstract":"<div><div>In this study we presented the preparation of eleven unknow in the literature surfactants based on mono- and disaccharides which contained urea bridge and 10, 12 or 14 carbon atoms in the hydrophobic chain in their structure. The surfactants were obtained in the SAW reaction in which CO<sub>2</sub> is used as one of the substrates with yields ranging from 16 % to 99 %. Some of the physicochemical properties were also investigated. The sugar derivatives are not soluble in water but shortening the hydrophobic chain to 8 carbon atoms increased their solubility. The HBL parameter indicated that the obtained surfactants are, among others, detergents, emulsifiers and wetting agents, which is also confirmed by results of the contact angle study. Compounds <strong>29</strong> forms aggregates or maybe even micelles above concentration of 1 mmol/l. The compounds also exhibit physical gel forming properties.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103200"},"PeriodicalIF":8.4,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-25DOI: 10.1016/j.jcou.2025.103201
Kayode Adesina Adegoke, Potlaki Foster Tseki
Electrocatalysts are essential in enhancing the kinetics of electrochemical CO2 reduction reactions (CO2RR). Engineering the surface characteristics and electronic structures of electrocatalysts presents a viable strategy for enhancing electrocatalytic efficacy. Incorporation of defects into metal-based materials to improve their performance in CO2RR has garnered significant interest in the past decades. This paper encapsulates the latest advancements in metal defect electrocatalysts pertinent to the electrosynthesis of C1 and C2 products from CO2RR. Here, the foundational principles and obstacles associated with CO2RR are emphasized, including issues such as lower CO2 solubility, larger overpotential, low efficiency, unclear mechanisms, and concerns surrounding electrocatalyst stability. This is followed by insight into reaction mechanisms for both C1 and C2 products from CO2RR. The study indicates the importance of defects, which provide an exceptional method due to the practicality of generating electrocatalysts with variable structures and compositions for various derivatives featuring intricate architectures, showcasing distinct advantages and considerable potential in CO2RR. The structural-performance relationships of the electrocatalyst, a core to electrocatalysis, were discussed. The applications of various defects, including vacancies, grain boundaries, and lattice defects, were highlighted. A thorough and cutting-edge examination of defective metal electrocatalysts, particularly concerning C1 and C2, is notably limited. Consequently, this study provides an in-depth examination of metal vacancy electrocatalysts, grain boundary electrocatalysts, and lattice defect electrocatalysts for the electrosynthesis of C1 and C2 products from CO2RR, thereby enhancing the understanding of the current research developments. In conclusion, strengths and weaknesses in this field were examined, accompanied by a future prognosis. This study should spark significant interest among researchers in advancing the enhancement of defective metal-based materials for C1, C2, and other higher products.
{"title":"Electrochemical CO2 conversion to C1 and C2 products on defective metal electrocatalysts","authors":"Kayode Adesina Adegoke, Potlaki Foster Tseki","doi":"10.1016/j.jcou.2025.103201","DOIUrl":"10.1016/j.jcou.2025.103201","url":null,"abstract":"<div><div>Electrocatalysts are essential in enhancing the kinetics of electrochemical CO<sub>2</sub> reduction reactions (CO<sub>2</sub>RR). Engineering the surface characteristics and electronic structures of electrocatalysts presents a viable strategy for enhancing electrocatalytic efficacy. Incorporation of defects into metal-based materials to improve their performance in CO<sub>2</sub>RR has garnered significant interest in the past decades. This paper encapsulates the latest advancements in metal defect electrocatalysts pertinent to the electrosynthesis of C<sub>1</sub> and C<sub>2</sub> products from CO<sub>2</sub>RR. Here, the foundational principles and obstacles associated with CO<sub>2</sub>RR are emphasized, including issues such as lower CO<sub>2</sub> solubility, larger overpotential, low efficiency, unclear mechanisms, and concerns surrounding electrocatalyst stability. This is followed by insight into reaction mechanisms for both C<sub>1</sub> and C<sub>2</sub> products from CO<sub>2</sub>RR. The study indicates the importance of defects, which provide an exceptional method due to the practicality of generating electrocatalysts with variable structures and compositions for various derivatives featuring intricate architectures, showcasing distinct advantages and considerable potential in CO<sub>2</sub>RR. The structural-performance relationships of the electrocatalyst, a core to electrocatalysis, were discussed. The applications of various defects, including vacancies, grain boundaries, and lattice defects, were highlighted. A thorough and cutting-edge examination of defective metal electrocatalysts, particularly concerning C<sub>1</sub> and C<sub>2</sub>, is notably limited. Consequently, this study provides an in-depth examination of metal vacancy electrocatalysts, grain boundary electrocatalysts, and lattice defect electrocatalysts for the electrosynthesis of C<sub>1</sub> and C<sub>2</sub> products from CO<sub>2</sub>RR, thereby enhancing the understanding of the current research developments. In conclusion, strengths and weaknesses in this field were examined, accompanied by a future prognosis. This study should spark significant interest among researchers in advancing the enhancement of defective metal-based materials for C<sub>1</sub>, C<sub>2</sub>, and other higher products.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103201"},"PeriodicalIF":8.4,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-23DOI: 10.1016/j.jcou.2025.103205
Ngoc N. Nguyen , Mirza Galib , Anh V. Nguyen , Praveen Linga
Gas hydrates are gas-carrying water structures with proven relevance to the sustainability future. Nature showcases these gas-carrying water structures through multi-trillion tones of methane encapsulated in natural gas hydrates (NGHs) on Earth. Experimentations successfully produced gas hydrates containing ∼5 wt% of hydrogen, 15 wt% of methane or 30 wt% of CO2. These water-based gas carriers hold great promise for efficient energy storage and CO2 sequestration. However, unlocking this potential has been impossible due to slow gas hydrate kinetics. Here, we propose a conceptually new approach, termed defect engineering, for rationally introducing structural defects into gas hydrate structures (using polar dopants) and creating defect-enabled gas mobility for enhanced gas hydrate kinetics. This approach is supported by preliminary experiments. While the supporting evidence remains incomplete, our discussions are grounded in a foundational basis and open up a new avenue of research in gas hydrates toward sustainable applications, especially, harnessing the CO2 (waste)/CH4 (energy) exchange in NGHs for simultaneously achieving energy recovery and carbon-neutrality.
{"title":"Defect-enabled fast gas hydrate kinetics for energy and decarbonisation applications","authors":"Ngoc N. Nguyen , Mirza Galib , Anh V. Nguyen , Praveen Linga","doi":"10.1016/j.jcou.2025.103205","DOIUrl":"10.1016/j.jcou.2025.103205","url":null,"abstract":"<div><div>Gas hydrates are gas-carrying water structures with proven relevance to the sustainability future. Nature showcases these gas-carrying water structures through multi-trillion tones of methane encapsulated in natural gas hydrates (NGHs) on Earth. Experimentations successfully produced gas hydrates containing ∼5 wt% of hydrogen, 15 wt% of methane or 30 wt% of CO<sub>2</sub>. These water-based gas carriers hold great promise for efficient energy storage and CO<sub>2</sub> sequestration. However, unlocking this potential has been impossible due to slow gas hydrate kinetics. Here, we propose a conceptually new approach, termed defect engineering, for rationally introducing structural defects into gas hydrate structures (using polar dopants) and creating defect-enabled gas mobility for enhanced gas hydrate kinetics. This approach is supported by preliminary experiments. While the supporting evidence remains incomplete, our discussions are grounded in a foundational basis and open up a new avenue of research in gas hydrates toward sustainable applications, especially, harnessing the CO<sub>2</sub> (waste)/CH<sub>4</sub> (energy) exchange in NGHs for simultaneously achieving energy recovery and carbon-neutrality.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"101 ","pages":"Article 103205"},"PeriodicalIF":8.4,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144888974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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