Uranium, a critical fuel for nuclear power generation, is essential for energy security and low‐carbon transitions. Seawater desalination concentrate (SDC) with approximately twice the uranium concentration of seawater represents a highly promising source for uranium extraction. In this study, we synthesized carbon fiber (CF)/UiO‐66‐AO composites (CF@UiO‐66‐AO) via a template‐free aqueous synthesis approach. The prepared materials demonstrated outstanding uranium adsorption capabilities, reaching a maximum capacity of 743.15 mg/g. Notably, they demonstrated excellent salt resistance in SDC and achieved an exceptional adsorption capacity of 15.8 mg/g, representing a 2.4‐fold increase over seawater (6.63 mg/g). Furthermore, the uranium extraction is integrated with the seawater desalination process, so that it can leverage the infrastructure and energy streams and increase the overall economics. The present work establishes the foundational materials science and engineering framework necessary to advance seawater‐derived uranium extraction from laboratory‐scale demonstrations toward viable scale‐up implementation. These advancements are pivotal for nuclear energy sustainability.
{"title":"Carbon fiber/metal–organic framework composites for process integration of uranium extraction with seawater desalination","authors":"Keshuang Yan, Yiming Li, Keming Wan, Manshu Zhao, Yuanzhi Jiang, Songxin Guo, Zhining Wang","doi":"10.1002/aic.70218","DOIUrl":"https://doi.org/10.1002/aic.70218","url":null,"abstract":"Uranium, a critical fuel for nuclear power generation, is essential for energy security and low‐carbon transitions. Seawater desalination concentrate (SDC) with approximately twice the uranium concentration of seawater represents a highly promising source for uranium extraction. In this study, we synthesized carbon fiber (CF)/UiO‐66‐AO composites (CF@UiO‐66‐AO) via a template‐free aqueous synthesis approach. The prepared materials demonstrated outstanding uranium adsorption capabilities, reaching a maximum capacity of 743.15 mg/g. Notably, they demonstrated excellent salt resistance in SDC and achieved an exceptional adsorption capacity of 15.8 mg/g, representing a 2.4‐fold increase over seawater (6.63 mg/g). Furthermore, the uranium extraction is integrated with the seawater desalination process, so that it can leverage the infrastructure and energy streams and increase the overall economics. The present work establishes the foundational materials science and engineering framework necessary to advance seawater‐derived uranium extraction from laboratory‐scale demonstrations toward viable scale‐up implementation. These advancements are pivotal for nuclear energy sustainability.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"4 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145938119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Photocatalytic hydrogen (H2) production holds immense potential as a sustainable energy solution while it is usually hindered by low catalytic efficiency. Engineering the photocatalyst supports is a key strategy for enhancing photocatalytic performance. Here, pyridine-functionalized porous polymer monoliths are prepared based on emulsion templating, followed by loading platinum (Pt) and cadmium sulfide (CdS) nanoparticles to successfully fabricate a high-performance photocatalyst Pt/CdS@P4VP. Compared to the counterpart Pt/CdS@PSt, substituting a single carbon atom with nitrogen, that is, replacing styrene with 4-vinylpyridine, enables achieving a remarkable enhancement in H2 production rate from 46.3 to 126.6 mmol h−1 m−2. Combined experimental studies and theoretical simulation unravel that the unique Pt–N coordination not only stabilizes the oxidation state of Pt but also facilitates efficient electron transfer and improves charge separation, thereby enhancing H2 generation during the photocatalytic process. Additionally, the porous and hydrophilic polymer skeletons provide abundant channels, facilitating the mass transportation of both water and H2. This study provides guidance for the rational design of high-performance photocatalysts for water splitting and offers a way to scale up the photocatalytic reaction system.
{"title":"Engineering emulsion-templated polymer monoliths via substituting a single carbon atom with nitrogen to boost photocatalytic hydrogen evolution","authors":"Chih-Chun Ching, Xin-Yu Meng, Shen Li, Tingwei Wang, Yin-Ning Zhou, Yun-Xiang Pan, Zheng-Hong Luo, Jin-Jin Li","doi":"10.1002/aic.70209","DOIUrl":"https://doi.org/10.1002/aic.70209","url":null,"abstract":"Photocatalytic hydrogen (H<sub>2</sub>) production holds immense potential as a sustainable energy solution while it is usually hindered by low catalytic efficiency. Engineering the photocatalyst supports is a key strategy for enhancing photocatalytic performance. Here, pyridine-functionalized porous polymer monoliths are prepared based on emulsion templating, followed by loading platinum (Pt) and cadmium sulfide (CdS) nanoparticles to successfully fabricate a high-performance photocatalyst Pt/CdS@P4VP. Compared to the counterpart Pt/CdS@PSt, substituting a single carbon atom with nitrogen, that is, replacing styrene with 4-vinylpyridine, enables achieving a remarkable enhancement in H<sub>2</sub> production rate from 46.3 to 126.6 mmol h<sup>−1</sup> m<sup>−2</sup>. Combined experimental studies and theoretical simulation unravel that the unique Pt–N coordination not only stabilizes the oxidation state of Pt but also facilitates efficient electron transfer and improves charge separation, thereby enhancing H<sub>2</sub> generation during the photocatalytic process. Additionally, the porous and hydrophilic polymer skeletons provide abundant channels, facilitating the mass transportation of both water and H<sub>2</sub>. This study provides guidance for the rational design of high-performance photocatalysts for water splitting and offers a way to scale up the photocatalytic reaction system.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"5 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145919985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An effective strategy based on hydrophobic deep eutectic solvent (HDES) synergistic extraction was developed for extracting lithium ions from spent lithium battery recycling effluent. Solid phenethyl salicylate (PES) forms a liquid HDES with trialkyl phosphine oxide (TRPO), overcoming the solid-phase limitation of PES and enhancing lithium extraction via synergistic coordination. Under optimal conditions, the PES-TRPO HDES achieves an 87.8% lithium extraction efficiency and a Li+/Na+ separation selectivity of 168. After three-stage counter-current extraction, lithium recovery exceeds 99%. The cyclic extraction capability of HDES is confirmed through multiple cycling experiments. The synergistic extraction mechanism reveals that hydrogen bonding between PES and TRPO drives the formation of HDES, while their synergistic coordination with lithium ions enhances the hydrophobic character of the complex, enabling efficient lithium extraction. This HDES-based synergistic extraction strategy is applicable to other extractants limited by solid-phase behavior, providing more opportunities for the development of novel high-performance separation systems.
{"title":"Toward efficient recovery of lithium via synergistic extraction using novel salicylate-based deep eutectic solvents","authors":"Xiang Wei, Hongye Cheng, Qian Liu, Zhen Song, Zhiwen Qi","doi":"10.1002/aic.70205","DOIUrl":"https://doi.org/10.1002/aic.70205","url":null,"abstract":"An effective strategy based on hydrophobic deep eutectic solvent (HDES) synergistic extraction was developed for extracting lithium ions from spent lithium battery recycling effluent. Solid phenethyl salicylate (PES) forms a liquid HDES with trialkyl phosphine oxide (TRPO), overcoming the solid-phase limitation of PES and enhancing lithium extraction via synergistic coordination. Under optimal conditions, the PES-TRPO HDES achieves an 87.8% lithium extraction efficiency and a Li<sup>+</sup>/Na<sup>+</sup> separation selectivity of 168. After three-stage counter-current extraction, lithium recovery exceeds 99%. The cyclic extraction capability of HDES is confirmed through multiple cycling experiments. The synergistic extraction mechanism reveals that hydrogen bonding between PES and TRPO drives the formation of HDES, while their synergistic coordination with lithium ions enhances the hydrophobic character of the complex, enabling efficient lithium extraction. This HDES-based synergistic extraction strategy is applicable to other extractants limited by solid-phase behavior, providing more opportunities for the development of novel high-performance separation systems.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"3 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145919988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shijie Shan, Iman Bahrabadi Jovein, Wenbo Mu, Biaohua Chen, Gabriele Sadowski, Christoph Held, Gangqiang Yu
This study uses thermodynamics and molecular mechanisms to systematically investigate the selective absorption of fluorinated gases (F-gases), which are very severe greenhouse gases. Deep eutectic solvents (DESs) were used as absorbents, and three DES candidates were selected from a screening of 132 potential DESs. The screening involved viscosities and thermal stabilities of the DESs as well as Henry's constants of the F-gases and their separation selectivity over other gases by conductor-like screening model for real solvent calculations. Perturbed-chain statistical associating fluid theory (PC-SAFT) was employed to predict both the thermodynamics (i.e., Henry's constants, enthalpy change, Gibbs free energy change, and entropy change for F-gas absorption in DESs) and the viscosity by combining PC-SAFT with entropy scaling theory. The solubilities of F-gases in the selected DESs were experimentally measured, which validated the PC-SAFT predictions. The molecular-level mechanisms behind selective absorption of F-gases in DESs were explored by quantum chemical calculations and molecular dynamics simulations.
{"title":"Capture of fluorinated severe greenhouse gases using deep eutectic solvents: PC-SAFT modeling and molecular insights","authors":"Shijie Shan, Iman Bahrabadi Jovein, Wenbo Mu, Biaohua Chen, Gabriele Sadowski, Christoph Held, Gangqiang Yu","doi":"10.1002/aic.70206","DOIUrl":"https://doi.org/10.1002/aic.70206","url":null,"abstract":"This study uses thermodynamics and molecular mechanisms to systematically investigate the selective absorption of fluorinated gases (F-gases), which are very severe greenhouse gases. Deep eutectic solvents (DESs) were used as absorbents, and three DES candidates were selected from a screening of 132 potential DESs. The screening involved viscosities and thermal stabilities of the DESs as well as Henry's constants of the F-gases and their separation selectivity over other gases by conductor-like screening model for real solvent calculations. Perturbed-chain statistical associating fluid theory (PC-SAFT) was employed to predict both the thermodynamics (i.e., Henry's constants, enthalpy change, Gibbs free energy change, and entropy change for F-gas absorption in DESs) and the viscosity by combining PC-SAFT with entropy scaling theory. The solubilities of F-gases in the selected DESs were experimentally measured, which validated the PC-SAFT predictions. The molecular-level mechanisms behind selective absorption of F-gases in DESs were explored by quantum chemical calculations and molecular dynamics simulations.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"1 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145919987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Puxin Shi, Liping Luan, Bo Zhang, Islam Mohammad Mahfuzul, Zhi Wang, Xinlei Liu
High‐performance H 2 /CO 2 separation with good scalability is needed in industry. Here, we fabricated mixed polymer fragment membranes on alumina tubes. The synergistic control of monomer diffusion rate promoted the formation of H 2 selective channels, thereby elevating the H 2 /CO 2 separation performance. The membranes, each with an area of 37.7 cm 2 , demonstrated a high H 2 /CO 2 selectivity of 22.5 (with a corresponding H 2 permeance of 209 GPU) at 150°C and 2 bar, high pressure resistance (H 2 permeance and H 2 /CO 2 selectivity were 212 GPU and 11.1 at 200°C and 10 bar, respectively), and good reproducibility. Furthermore, we studied the effects of sweep gas, permeate pressure, reuse of substrates, and H 2 O and H 2 S contaminants on membrane performance, pointing out that the membranes can be well adapted to industrial relevant conditions. In addition, a two‐stage membrane system was designed to produce high concentration H 2 with a good yield.
{"title":"Mixed polymer fragment membranes on large‐area tubes for high‐performance H 2 purification","authors":"Puxin Shi, Liping Luan, Bo Zhang, Islam Mohammad Mahfuzul, Zhi Wang, Xinlei Liu","doi":"10.1002/aic.70220","DOIUrl":"https://doi.org/10.1002/aic.70220","url":null,"abstract":"High‐performance H <jats:sub>2</jats:sub> /CO <jats:sub>2</jats:sub> separation with good scalability is needed in industry. Here, we fabricated mixed polymer fragment membranes on alumina tubes. The synergistic control of monomer diffusion rate promoted the formation of H <jats:sub>2</jats:sub> selective channels, thereby elevating the H <jats:sub>2</jats:sub> /CO <jats:sub>2</jats:sub> separation performance. The membranes, each with an area of 37.7 cm <jats:sup>2</jats:sup> , demonstrated a high H <jats:sub>2</jats:sub> /CO <jats:sub>2</jats:sub> selectivity of 22.5 (with a corresponding H <jats:sub>2</jats:sub> permeance of 209 GPU) at 150°C and 2 bar, high pressure resistance (H <jats:sub>2</jats:sub> permeance and H <jats:sub>2</jats:sub> /CO <jats:sub>2</jats:sub> selectivity were 212 GPU and 11.1 at 200°C and 10 bar, respectively), and good reproducibility. Furthermore, we studied the effects of sweep gas, permeate pressure, reuse of substrates, and H <jats:sub>2</jats:sub> O and H <jats:sub>2</jats:sub> S contaminants on membrane performance, pointing out that the membranes can be well adapted to industrial relevant conditions. In addition, a two‐stage membrane system was designed to produce high concentration H <jats:sub>2</jats:sub> with a good yield.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"87 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145908224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Flash Joule‐heating (FJH) technology emerges as a transformative advancement in electrothermal processing with minimal carbon footprint, which leverages high‐intensity electrical pulses to rapidly heat conductive materials to extreme temperatures (often exceeding 3000 K), inducing dramatic structural transformations through non‐equilibrium pathways, thus displaying feasibility across various application scenarios. Noteworthily, FJH technology has evolved from a laboratory practice to a cornerstone of sustainable materials engineering, witnessing ever‐growing researching interests. Thus, a holistic and timely summary of the recent progress and development of FJH technology is of crucial importance to deepen the understandings and update the remaining difficulties in each application that need to be resolved. While challenges still remain on inhibiting the scaled production upon the deployment of FJH, as such, this review proposes perspectives and strategies to help address key unresolved challenges ghosting FJH technology, in order to make the quick landing of FJH‐led industrial revolution and production.
{"title":"Flash joule‐heating technology for material manufacturing, processing, and emerging applications","authors":"Xiaoxi Yuan, Chaohui Yan, Shaochen Zhang, Yuqi Yang, Shengtai Zhou, Peng Huang, Dong Xia","doi":"10.1002/aic.70215","DOIUrl":"https://doi.org/10.1002/aic.70215","url":null,"abstract":"Flash Joule‐heating (FJH) technology emerges as a transformative advancement in electrothermal processing with minimal carbon footprint, which leverages high‐intensity electrical pulses to rapidly heat conductive materials to extreme temperatures (often exceeding 3000 K), inducing dramatic structural transformations through non‐equilibrium pathways, thus displaying feasibility across various application scenarios. Noteworthily, FJH technology has evolved from a laboratory practice to a cornerstone of sustainable materials engineering, witnessing ever‐growing researching interests. Thus, a holistic and timely summary of the recent progress and development of FJH technology is of crucial importance to deepen the understandings and update the remaining difficulties in each application that need to be resolved. While challenges still remain on inhibiting the scaled production upon the deployment of FJH, as such, this review proposes perspectives and strategies to help address key unresolved challenges ghosting FJH technology, in order to make the quick landing of FJH‐led industrial revolution and production.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"167 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145908181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiang Kang, Ruiyu De, Shuqian Xia, Weiwei Tang, Junbo Gong
Mechanistic understanding of tautomer, a new class of modifiers, that affects crystal shape and growth kinetics is crucial to tailoring the property of tautomeric crystalline materials but remains elusive. Herein, we investigated this effect through a combination of kinetics modeling and experimental validation. Accounting for both tautomeric thermodynamics and inter‐conversion kinetics, we developed mechanistic expressions that consider the tautomerism‐induced growth self‐inhibition process. Our approach enables us to calculate the influence of various operational conditions on growth kinetics and to predict the dominant factors of growth self‐inhibition by tautomers. Tautomers were found primarily to suppress crystal growth by reducing the driving force under mass‐transfer growth regime. However, the inhibitory effect shifts to a more complex synergistic action of step pinning and kink blocking mechanisms with interfacial tautomer inter‐conversions under surface‐integration limited growth regime. Finally, the effectiveness of our developed kinetics model was further experimentally validated using two urate salts as model systems.
{"title":"Mechanistic insights into tautomerism‐induced crystal growth self‐inhibition informed by kinetics modeling","authors":"Xiang Kang, Ruiyu De, Shuqian Xia, Weiwei Tang, Junbo Gong","doi":"10.1002/aic.70175","DOIUrl":"https://doi.org/10.1002/aic.70175","url":null,"abstract":"Mechanistic understanding of tautomer, a new class of modifiers, that affects crystal shape and growth kinetics is crucial to tailoring the property of tautomeric crystalline materials but remains elusive. Herein, we investigated this effect through a combination of kinetics modeling and experimental validation. Accounting for both tautomeric thermodynamics and inter‐conversion kinetics, we developed mechanistic expressions that consider the tautomerism‐induced growth self‐inhibition process. Our approach enables us to calculate the influence of various operational conditions on growth kinetics and to predict the dominant factors of growth self‐inhibition by tautomers. Tautomers were found primarily to suppress crystal growth by reducing the driving force under mass‐transfer growth regime. However, the inhibitory effect shifts to a more complex synergistic action of step pinning and kink blocking mechanisms with interfacial tautomer inter‐conversions under surface‐integration limited growth regime. Finally, the effectiveness of our developed kinetics model was further experimentally validated using two urate salts as model systems.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"29 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wenxu Sun, Liang Teng, Yimin Xuan, Jingrui Liu, Yupeng Lu
As a major contributor to global CO 2 emissions, the cement industry is under unprecedented existential pressure from market contraction and stringent carbon regulations, escalating the need for cost‐effective CO 2 reduction solutions. In response, this study proposes a “Green Loop Cement Plant” concept based on a hybrid‐energy driven cement CO 2 capture and utilization (HE‐CCCU) system. Process modeling and techno‐economic analysis demonstrate that by integrating tail‐end calcium looping with in situ dry reforming of methane, the HE‐CCCU system can achieve a 90% reduction in CO 2 emissions and avoid carbon taxes of 38.73 $/t clinker , with an estimated payback time of 8.01 years. Through hybrid‐energy driven co‐production of syngas and electricity, annual performance evaluations indicate an average daily net income of 241.35 $/t clinker under real solar irradiance and dynamic electricity pricing scenarios. These findings facilitate the decarbonization and techno‐economic transition of cement manufacturing while offering a new pathway for renewable energy deployment in the industrial sector.
{"title":"Hybrid‐energy driven decarbonization transition in cement production: Process modeling and techno‐economic analysis","authors":"Wenxu Sun, Liang Teng, Yimin Xuan, Jingrui Liu, Yupeng Lu","doi":"10.1002/aic.70207","DOIUrl":"https://doi.org/10.1002/aic.70207","url":null,"abstract":"As a major contributor to global CO <jats:sub>2</jats:sub> emissions, the cement industry is under unprecedented existential pressure from market contraction and stringent carbon regulations, escalating the need for cost‐effective CO <jats:sub>2</jats:sub> reduction solutions. In response, this study proposes a “Green Loop Cement Plant” concept based on a hybrid‐energy driven cement CO <jats:sub>2</jats:sub> capture and utilization (HE‐CCCU) system. Process modeling and techno‐economic analysis demonstrate that by integrating tail‐end calcium looping with <jats:italic>in situ</jats:italic> dry reforming of methane, the HE‐CCCU system can achieve a 90% reduction in CO <jats:sub>2</jats:sub> emissions and avoid carbon taxes of 38.73 $/t <jats:sub>clinker</jats:sub> , with an estimated payback time of 8.01 years. Through hybrid‐energy driven co‐production of syngas and electricity, annual performance evaluations indicate an average daily net income of 241.35 $/t <jats:sub>clinker</jats:sub> under real solar irradiance and dynamic electricity pricing scenarios. These findings facilitate the decarbonization and techno‐economic transition of cement manufacturing while offering a new pathway for renewable energy deployment in the industrial sector.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"32 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Boron nitride (BN) has a two‐dimensional covalent structure and offers a catalytic platform for highly selective oxidative dehydrogenation of propane (ODHP). However, the limited structural tunability of pristine BN restricts its activity and stability under harsh conditions. Here, we demonstrate that highly curved BN surfaces in small‐diameter multiwalled BN nanotubes promote ODHP activity via B‐O sites at nitrogen vacancies, achieving over 20% propane conversion at 520°C. These nanotubes are synthesized via a metal‐free millisecond carbon thermal shock method, avoiding oxidative degradation. The resulting catalyst withstands temperatures up to 600°C, and the local B‐O/H environment impedes oxygen and water intrusion, ensuring stability over 100 h through multiple reaction cycles.
{"title":"Curved boron nitride surface enables active and stable propane oxidative dehydrogenation","authors":"Jinshu Tian, Chi Wang, Liwei Xia, Ni Ouyang, Juncheng Wu, Qilong Feng, Mingwu Tan, Yukun Zhou, Zhongting Hu, Yong Wang, Xiaonian Li, Yihan Zhu","doi":"10.1002/aic.70139","DOIUrl":"https://doi.org/10.1002/aic.70139","url":null,"abstract":"Boron nitride (BN) has a two‐dimensional covalent structure and offers a catalytic platform for highly selective oxidative dehydrogenation of propane (ODHP). However, the limited structural tunability of pristine BN restricts its activity and stability under harsh conditions. Here, we demonstrate that highly curved BN surfaces in small‐diameter multiwalled BN nanotubes promote ODHP activity via B‐O sites at nitrogen vacancies, achieving over 20% propane conversion at 520°C. These nanotubes are synthesized via a metal‐free millisecond carbon thermal shock method, avoiding oxidative degradation. The resulting catalyst withstands temperatures up to 600°C, and the local B‐O/H environment impedes oxygen and water intrusion, ensuring stability over 100 h through multiple reaction cycles.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"70 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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