Journal of CO2 Utilization最新文献_第5页

Sustainable utilization of flue gas components (CO2, SO2, and NOx) in skim rubber production via microbubble technology 通过微泡技术可持续利用脱脂橡胶生产中的烟气成分（CO2、SO2和NOx）

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-08 DOI: 10.1016/j.jcou.2026.103321

Hnin Nandar Soe , Matthana Khangkhamano , Rungrote Kokoo , Si Thu Myint Maung , Lerrat Chuaibamrung

Flue gas, a major industrial pollutant, highlights the urgent need for technologies that can either capture emissions at their source or transform them into environmentally friendly materials. Meanwhile, conventional skim rubber production poses significant environmental and health concerns, including the generation of acidic wastewater, the release of air pollutants, and the risks associated with handling concentrated sulfuric acid and open-air ammonia removal. This study presents a green and innovative approach that utilizes flue gas as a sustainable feedstock for skim rubber production via microbubble-assisted coagulation, addressing these critical challenges. Coagulation and de-ammonization of skim latex using different flue gas components (CO₂, SO₂, and NO_x) via the microbubble process were discussed. The microstructural, physical, and mechanical properties of skim rubber coagulated with microbubbles containing different flue gas components (CO₂, SO₂, and NO_x) were systematically compared with those obtained from the conventional process. Results demonstrated that microbubble-coagulated skim rubber exhibited enhanced physical and mechanical properties compared to conventionally coagulated samples. The process reduces costs, minimizes effluent discharge, and lowers air pollution, offering a sustainable solution to both flue gas utilization and limitations of conventional coagulation.

烟气是一种主要的工业污染物，它突出表明迫切需要能够从源头捕获排放或将其转化为环境友好材料的技术。与此同时，传统的脱脂橡胶生产带来了重大的环境和健康问题，包括产生酸性废水、释放空气污染物以及处理浓硫酸和露天除氨所带来的风险。本研究提出了一种绿色创新的方法，利用烟气作为微泡辅助混凝法生产脱脂橡胶的可持续原料，解决了这些关键挑战。探讨了不同烟气组分（CO2、SO2和NOx）对脱脂乳胶微泡法的混凝和脱氨效果。用含有不同烟气组分（CO2、SO2和NOx）的微气泡混凝脱脂橡胶，系统地比较了其微观结构、物理和机械性能。结果表明，微泡混凝的脱脂橡胶比常规混凝的橡胶具有更好的物理力学性能。该工艺降低了成本，最大限度地减少了废水排放，降低了空气污染，为烟气利用和传统混凝的局限性提供了可持续的解决方案。

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引用次数: 0

Strategic prioritization of carbon capture and utilization pathways for Saudi Arabia’s circular carbon economy 沙特阿拉伯循环碳经济碳捕集利用路径的战略优先顺序

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-06 DOI: 10.1016/j.jcou.2025.103307

Naser Odeh , Julian David Hunt , Faisal Ibrahim Bin Salem , Mohamad Hejazi , Yoshihide Wada

As global leader in fossil fuel production, Saudi Arabia must balance economic growth with its decarbonization activities. This study assesses various CO₂ utilization pathways aligned with Saudi Vision 2030 and the Circular Carbon Economy, using a multi-criteria decision analysis framework to rank options by maturity, scalability, cost, sequestration potential, and policy fit. Among 9 assessed pathways, CCU for construction materials, such as concrete curing and carbonated aggregates rank highest due to their high technology readiness level (TRL 8–9), economic scalability, and potential for permanent CO₂ sequestration. It is estimated that around 4.7 Mt CO₂/y can be utilized in existing concrete plants across the Kingdom by 2030 with retrofitting costs of around $0.5 M to 1.5 M per site. Our analysis highlights that CO₂-derived fuels like synthetic methane and sustainable aviation fuels offer long-term decarbonization potential, especially when combined with DAC or biogenic CO₂ for net-negative emissions. However, they face challenges such as high energy demand, infrastructure needs, and abatement costs of $430–$650 per tonne of CO₂. Chemical conversion routes (e.g., formic acid, DMC, polyols, cyclic carbonates) have moderate maturity (TRL 4–6) and require substantial R&D investment. Though aligned with Vision 2030, their high costs and carbon leakage risks limit short-term viability. Algae-based utilization offers up to 2 tCO₂ sequestered per tonne of biomass but remains in early stages. Despite these challenges, Saudi Arabia has the potential to lead regionally in CCU by leveraging its industrial base, low-cost renewables, and policy momentum to advance impactful circular carbon solutions.

作为全球化石燃料生产的领导者，沙特阿拉伯必须在经济增长与脱碳活动之间取得平衡。本研究评估了与沙特2030年愿景和循环碳经济相一致的各种二氧化碳利用途径，使用多标准决策分析框架根据成熟度、可扩展性、成本、封存潜力和政策契合度对各种选择进行排名。在9个评估的途径中，建筑材料的CCU，如混凝土养护和碳化骨料，由于其高技术成熟度（TRL 8-9），经济可扩展性和永久二氧化碳封存的潜力，排名最高。据估计，到2030年，沙特王国现有的混凝土工厂每年可利用约470万吨二氧化碳，每个工厂的改造成本约为0.5 万美元至1.5 万美元。我们的分析强调，二氧化碳衍生燃料（如合成甲烷和可持续航空燃料）具有长期脱碳潜力，特别是与DAC或生物源二氧化碳结合使用时，可实现净负排放。然而，他们面临着诸如高能源需求，基础设施需求以及每吨二氧化碳430至650美元的减排成本等挑战。化学转化途径（如甲酸、DMC、多元醇、环状碳酸盐）成熟度中等（TRL 4-6），需要大量的研发投资。尽管符合《2030愿景》，但它们的高成本和碳泄漏风险限制了短期可行性。以藻类为基础的利用每吨生物质可封存高达2吨的二氧化碳，但仍处于早期阶段。尽管存在这些挑战，沙特阿拉伯仍有潜力通过利用其工业基础、低成本可再生能源和政策动力来推进有影响力的循环碳解决方案，在CCU领域处于地区领先地位。

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引用次数: 0

Ultra-rapid direct dissociation of CO₂ with dense pulsed plasma jets for Martian oxygen production 用密集脉冲等离子体射流超快速直接解离二氧化碳，用于火星氧气生产

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-15 DOI: 10.1016/j.jcou.2026.103326

Adrian Scurtu, Dorina Ticoş, Constantin Diplaşu, Nicoleta Udrea, Maria Luiza Mitu, Beatrice Paraschiv, Cătălin M. Ticoş

Intense pulsed plasma jets with electron densities of in excess of 10²¹ m⁻³ and temperatures of ∼13 eV were used to dissociate CO₂ under Martian pressure conditions at 1–5 Torr for in-situ oxygen production. Our method demonstrated 20–50 times greater temporal efficiency than an RF plasma, which achieved a 23 % conversion in ∼450 s. This advantage stems from our method’s reduced sensitivity to non-thermal back reactions and thermal recombination, as well as its notably short CO₂ dissociation time of just 5 nanoseconds. A peak conversion rate of 33.29 % was reached at 1 Torr, with an O₂ produced mass of 5.5 mg per pulse at 5 Torr. Energy efficiency reached 7.2 % at a low specific energy input (SEI) of less than < 11 eV/molecule, surpassing RF and DC plasmas which feature 1.6 %, although all plasma systems exhibit reduced efficiency at low pressures due to high SEI from low molecular density. These findings highlight pulsed plasma jets as a promising, scalable solution for rapid oxygen generation on Mars, with optimization via larger chambers and possibly catalysts approach.

利用电子密度超过10²¹ m⁻³ 和温度为~ 13 eV的强脉冲等离子体射流，在1-5 Torr的火星压力条件下解离CO₂，用于原位制氧。我们的方法证明了比射频等离子体高20-50 倍的时间效率，在~ 450 秒内实现了23 %的转换。这一优势源于我们的方法降低了对非热反反应和热复合的敏感性，以及它的CO₂解离时间非常短，仅为5纳秒。在1 Torr时，转化率达到33.29 %，在5 Torr时，每脉冲产生的O₂质量为5.5 mg。在低于 11 eV/分子的低比能输入（SEI）下，能量效率达到了7.2 %，超过了RF和DC等离子体的1.6 %，尽管所有等离子体系统在低压下由于低分子密度的高SEI而降低了效率。这些发现强调了脉冲等离子体射流作为一种有前途的、可扩展的解决方案，可以通过更大的腔室和可能的催化剂方法进行优化，在火星上快速生成氧气。

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引用次数: 0

Emerging 2D–Ti3C2Tx-MXene nanomaterial anchored on MIL-101(Cr) metal-organic framework as solid adsorbent for CO₂ capture under ambient conditions 新型2D-Ti3C2Tx-MXene纳米材料锚定在MIL-101（Cr）金属有机骨架上作为固体吸附剂在环境条件下捕获CO₂

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-13 DOI: 10.1016/j.jcou.2026.103322

Sehrish Shoukat , Jaeseok Heo , Jungmin Yang , Duckshin Park

The increasing accumulation of CO₂ in the atmosphere has intensified the need for efficient carbon dioxide capture materials. However, it is a challenge to come up with an optimum solid CO₂ adsorbent that can substitute chemical adsorption for large-scale applications. Among various solid sorbents, metal-organic frameworks (MOFs) combined with newly emerging two-dimensional (2D) nanomaterials, Ti₃C₂T_x-MXene, have attracted significant attention owing to their higher porosity, tunable structures, and large surface areas and physisorption mechanism. In this study, we describe the utilization of 2D Ti₃C₂T_x-MXene anchored on MIL-101(Cr) MOF in solid form to evaluate their CO₂ adsorption performance using a fixed-bed adsorption column. Advanced characterization of the as-produced adsorbent is conducted using XRD, FTIR, SEM with EDS, TGA, and BET analysis to assess their surface morphology, surface groups, chemical composition, and surface properties. The synthesized composite showed a BET surface area of 2138 m²/g and a pore volume of ∼1.34 cm³/g. In the adsorption column, CO₂ breakthrough measurements were performed by a continuous CO₂ concentration (15 %) with an inlet flow of 40 mL/min at 1 atm and 25 °C. The CO₂ adsorption capacity (∼21 mg/g) was achieved by Ti₃C₂T_x-MXene/MIL-101 (Cr) at ambient conditions. This corresponds to ∼50 % better performance than pristine MIL-101 (Cr) at similar conditions. Moreover, the Ti₃C₂T_x-MXene/MIL-101 (Cr) offers good regeneration performance with no significant loss in CO₂ adsorption capacity in regenerative cycles. Finally, the novel work with good CO₂ adsorption results opens a new window of implications of emerging nanomaterials as a promising material platform for CO₂ capture applications for further investigation under direct air capture conditions (ultra-low CO₂ concentrations).

大气中二氧化碳的积累日益增加，加强了对有效的二氧化碳捕获材料的需求。然而，如何找到一种可以代替化学吸附大规模应用的最佳固体CO2吸附剂是一个挑战。在各种固体吸附剂中，金属有机骨架（MOFs）与新兴的二维（2D）纳米材料Ti3C2Tx-MXene相结合，因其孔隙率高、结构可调、比表面积大、吸附机理好而备受关注。在这项研究中，我们描述了利用固定床吸附柱，以固体形式固定在MIL-101(Cr) MOF上的2D Ti3C2Tx-MXene，来评估它们对CO2的吸附性能。利用XRD、FTIR、SEM、EDS、TGA和BET分析对所制备的吸附剂进行了深入表征，以评估其表面形貌、表面基团、化学成分和表面性能。合成的复合材料的BET比表面积为2138 m2/g，孔体积为~ 1.34 cm3/g。在吸附柱中，CO2突破测量采用连续CO2浓度（15 %），进口流量为40 mL/min，温度为1 atm，温度为25℃。在环境条件下，Ti3C2Tx-MXene/MIL-101 （Cr）的CO2吸附量为~ 21 mg/g。这相当于在类似条件下比原始MIL-101 （Cr）的性能提高~ 50 %。此外，Ti3C2Tx-MXene/MIL-101 （Cr）具有良好的再生性能，在再生循环中没有明显的CO2吸附能力损失。最后，这项具有良好二氧化碳吸附效果的新工作为新兴纳米材料的应用打开了一扇新的窗口，纳米材料作为一种有前途的材料平台，可以在直接空气捕获条件下（超低二氧化碳浓度）进一步研究二氧化碳捕获应用。

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引用次数: 0

New composite materials based on g-C3N4 loaded with Copper(I) oxalate as promoters of C-C coupling in CO2-H2O co-processing under solar irradiation 基于g-C3N4负载草酸铜(I)作为太阳辐照下CO2-H2O协同处理中C-C偶联促进剂的新型复合材料

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-10 DOI: 10.1016/j.jcou.2026.103317

Michele Aresta , Domenico Caringella , Ernesto Mesto , Christopher Habu , Angela Dibenedetto

New composites made of copper(I)oxalate mixed with g-C₃N₄ by High Energy Milling (HEM) (at 800 rpm) in various w/w percentage (10, 20, 50 % w/w) and for different milling times (30–90 min) are shown to be active as gas-phase photocatalysts in coprocessing “CO₂ and H₂O” under solar irradiation (0.1 W cm⁻²) at room temperature to afford ethene or acetone in the range of 20–50 μmol g⁻¹ h⁻¹. The materials have been characterized by UV–VIS DRS, FTIR, elemental analyses, XRD, SEM, Band-gap and chopped photocurrent. The CO2RPs have been identified through GC, GC-MS and multinuclear NMR. Materials have been tested for over 15 h in gas-phase photochemical reactions and shown to be stable towards: the exchange with ¹³CO₂, used to exclude “false positives”, disproportionation to afford CO and CO₃^2-, and oxalate anion reduction. Cu(I)-oxalate modifies the properties of g-C₃N₄ and most likely is even implied in C-C coupling, as the Cu-Cu distance (255 pm, as determined by XRD in this work) is suited for promoting C-C coupling and is kept constant during operation by the backbone-action of the oxalate anion, which avoids Cu-centres random distribution, that would cause C-C coupling regression.

在太阳辐照（0.1 w cm−2）下，以不同的w/w比例（10、20、50 % w/w）和不同的研磨时间（30-90 min），在800 rpm下，草酸铜(I)与g- c3n4混合制成的新型复合材料在室温下作为气相光催化剂，在CO2和H2O的协同处理中具有活性，产生20 - 50 μmol g−1 h−1范围内的乙烯或丙酮。采用UV-VIS DRS、FTIR、元素分析、XRD、SEM、带隙和斩波光电流对材料进行了表征。通过气相色谱、气相色谱-质谱和多核磁共振对co2rp进行了鉴定。材料已经在气相光化学反应中测试了超过15 h，并显示出稳定的：与13CO2交换，用于排除“假阳性”，歧化以提供CO和CO32-，以及草酸阴离子还原。Cu(I)-草酸盐改变了g-C3N4的性质，甚至很可能隐含在C-C耦合中，因为Cu-Cu距离（255 pm，本文通过XRD测定）适合促进C-C耦合，并且在运行过程中通过草酸阴离子的主干作用保持恒定，避免了Cu中心随机分布导致C-C耦合回归。

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引用次数: 0

Nanofluidic replication of reservoir pore networks on silicon chips: New insights of the miscibility of CO2–alkane systems in nano-confined spaces 硅芯片上储层孔隙网络的纳米流体复制：纳米密闭空间中co2 -烷烃体系混相的新见解

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-15 DOI: 10.1016/j.jcou.2026.103324

Xiuxiu Pan , Linghui Sun , Huiwen Xiao , Qingjie Liu , Zhirong Zhang , Xu Huo , Yuhan Wang , Feiyu Chen , Boyu Jiang

The supercritical properties of CO₂ and its carbon neutrality properties drive its wide application in geological utilization and storage, but the complex structural characteristics of reservoir nanopores restrict the utilization of CO₂. In this study, we innovatively integrate molten wood’s metal perfusion technology and the formation nanopore reproduction process, constructing a nanosilicon-based chip (characteristic scales: 1μm, 200 nm, 100 nm, 30 nm) based on the topological characteristics of the pore network of shale reservoirs.We systematically reveal the dynamic miscibility behavior of CO₂ and seven alkane components (C₆-C₁₂) within confined space. The experimental results indicate that the nanoconfinement effect significantly reduces the minimum miscible pressure (MMP) of the system, with the maximum reduction reaching 4.18 % at 30 nm (0.68 % and 2.56 % at 200 nm and 100 nm, respectively). The miscible component intervals are also scale-dependent and can be classified into three characteristic regions based on MMP: below C₆ (fast miscible zone), C₇-C₁₁ (transitional miscible zone), and above C₁₂ (hysteresis miscible zone). Furthermore, for the first time, the component differentiation phenomenon of mixed alkane systems was understood in homogeneous and heterogeneous fracture-pore systems. We propose a coupled approach of "digital replication of reservoir pores and in-situ nanofluidic observation" to reproduce the miscible process between CO₂ and key components of crude oil. This novel method, along with robust experimental data, is expected to serve as a valuable reference for the further development of CO₂ geological utilization.

CO2的超临界特性及其碳中性特性推动了其在地质利用和封存中的广泛应用，但储层纳米孔复杂的结构特征限制了CO2的利用。本研究创新性地将熔融木的金属灌注技术与地层纳米孔再生过程相结合，根据页岩储层孔隙网络的拓扑特征，构建了特征尺度为1μm、200 nm、100 nm、30 nm的纳米硅基芯片。我们系统地揭示了CO2与七种烷烃组分（C6-C12）在密闭空间内的动态混相行为。实验结果表明，纳米约束效应显著降低了体系的最小混相压力（MMP），在30 nm处最大降低了4.18 %，在200 nm和100 nm处分别降低了0.68 %和2.56 %。混相成分层段也具有尺度依赖性，根据MMP可划分为C6以下（快速混相带）、C7-C11（过渡混相带）和C12以上（滞后混相带）三个特征区。首次在均质和非均质缝孔体系中认识了混合烷烃体系的组分分异现象。提出了一种“储层孔隙数字复制与纳米流体原位观察”的耦合方法来再现CO2与原油关键组分的混相过程。这种新方法以及可靠的实验数据有望为进一步发展二氧化碳地质利用提供有价值的参考。

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引用次数: 0

Elucidating nitrogen doping effects in carbon-based CO2 adsorbents through data-driven analysis for rational adsorbent design 通过数据驱动分析阐明碳基CO2吸附剂中的氮掺杂效应，为吸附剂的合理设计提供依据

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-08 DOI: 10.1016/j.jcou.2026.103316

Permjit Asawarungruengchai , Phongphot Sakulaue , Krittapong Deshsorn , Pawin Iamprasertkun , Natsuda Kaothanthong , Khanin Nueangnoraj

The influence of nitrogen doping on the CO₂ adsorption performance of carbon-based materials remains debated, with unclear conclusions regarding whether surface chemistry or textural properties primarily govern adsorption behavior. In this study, we systematically examined the effects of nitrogen content and surface area on CO₂ adsorption capacity using a data-driven statistical approach. A comprehensive dataset of 1215 experimental data points compiled from 100 publications was analyzed through correlation analysis, multiple linear regression, and mediation analysis. The results reveal that nitrogen content and surface area are interrelated and may exert competing effects on adsorption. Multiple linear regression confirms that surface area exerts a substantially greater influence on CO₂ adsorption than nitrogen content, as indicated by higher standardized regression coefficients at both 273 K and 298 K. Mediation analysis further demonstrates that the influence of nitrogen on CO₂ adsorption occurs predominantly indirectly through its modification of surface area, with mediated proportions of 70.1 % and 58.2 %, respectively. A comparative evaluation of nitrogen-doped and undoped carbons supports these findings, showing consistent positive correlations between surface area and CO₂ adsorption capacity regardless of nitrogen incorporation. These results provide quantitative evidence that textural development and surface accessibility play a more decisive role than nitrogen functionalities in CO₂ capture. The insights obtained here establish a data-driven foundation for the rational design and future machine-learning optimization of advanced carbon-based CO₂ adsorbents.

氮掺杂对碳基材料的CO2吸附性能的影响仍然存在争议，关于表面化学性质还是结构性质主要影响吸附行为的结论尚不明确。在这项研究中，我们使用数据驱动的统计方法系统地研究了氮含量和表面积对CO2吸附能力的影响。通过相关分析、多元线性回归和中介分析，对100篇文献中1215个实验数据点的综合数据集进行分析。结果表明，氮含量和表面积是相互关联的，并可能对吸附产生竞争效应。多元线性回归证实，表面积对CO2吸附的影响要比氮含量大得多，这一点在273 K和298 K处的标准化回归系数较高。进一步的中介分析表明，氮气对CO2吸附的影响主要是通过对表面积的修饰间接发生的，其中介比例分别为70.1 %和58.2% %。对氮掺杂和未掺杂碳的比较评估支持了这些发现，表明无论氮掺入与否，表面面积和CO2吸附能力之间都存在一致的正相关关系。这些结果提供了定量证据，表明结构发育和表面可及性在CO2捕获中比氮功能起更决定性的作用。本文获得的见解为先进碳基CO2吸附剂的合理设计和未来的机器学习优化奠定了数据驱动的基础。

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引用次数: 0

Bioinspired porous cementitious materials for CO₂ capture: A critical review of accelerated carbonation strategies 生物激发多孔胶凝材料用于CO₂捕获：加速碳化策略的重要回顾

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-06 DOI: 10.1016/j.jcou.2025.103299

Joaquim Constantino , João Castro-Gomes , Maria Inês Alves Vicente

This critical review presents a comprehensive synthesis of recent advances in the development of bioinspired porous cementitious materials for enhanced CO₂ capture via accelerated carbonation. Addressing the urgent demand for sustainable construction solutions, the study consolidates current literature on pore structure optimisation including pore size, distribution, interconnectivity, and specific surface area and their influence on carbonation kinetics and sequestration efficiency. Inspired by hierarchical biological systems such as corals, mollusc shells, and marine sponges, the review explores the translation of structural and functional principles into cementitious matrices. A comparative analysis of key accelerated carbonation strategies standard curing, pressurised systems, flow-through techniques, and water CO₂ cooperative processes is provided, highlighting their mechanistic bases, process parameters, and industrial scalability. The technological readiness and real-world applicability of CO₂-mineralising concrete are assessed through selected industrial case studies, contextualised within circular economy and carbon neutrality frameworks. Finally, the review identifies critical knowledge gaps and outlines future research directions to advance next-generation low-carbon cementitious materials that integrate mechanical performance, tailored porosity, and environmental functionality.

这篇重要的综述介绍了生物激发多孔胶凝材料的发展的最新进展，通过加速碳化来增强二氧化碳捕获。为了解决对可持续建筑解决方案的迫切需求，该研究整合了目前关于孔隙结构优化的文献，包括孔隙大小、分布、连通性、比表面积及其对碳化动力学和封存效率的影响。受珊瑚、软体动物壳和海洋海绵等分层生物系统的启发，本文探讨了将结构和功能原理转化为胶凝基质的方法。对关键的加速碳化策略进行了比较分析，标准固化、加压系统、流动技术和水- CO - 2协同工艺，强调了它们的机理基础、工艺参数和工业可扩展性。通过选定的工业案例研究，在循环经济和碳中和框架的背景下，评估二氧化碳矿化混凝土的技术准备程度和现实世界的适用性。最后，该综述确定了关键的知识空白，并概述了未来的研究方向，以推进下一代低碳胶凝材料，该材料集机械性能、定制孔隙度和环境功能于一体。

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引用次数: 0

Growth of ionic polymers on ZIFs to construct core-shell hybrid materials via coordination interactions for catalytic CO₂ conversion 离子聚合物在zif上生长，通过配位作用构建核壳杂化材料，催化CO₂转化

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-13 DOI: 10.1016/j.jcou.2026.103325

Jinquan Wang , Xiukai Li , Siew Ping Teong , Shook Pui Chan , Zibiao Li , Xinglong Zhang , Yugen Zhang

A sustainable and practical method has been developed for synthesizing ZIF-ionic polymer core-shell hybrid materials. This one-pot, two-step process employs imidazole, zinc nitrate, DABCO (1,4-diazabicyclo[2.2.2]octane), and 1,3,5-tris(bromomethyl)benzene in ethanol, yielding high efficiency. In this approach, DABCO facilitates ZIF formation by deprotonating imidazole and subsequently reacts with 1,3,5-tris(bromomethyl)benzene to generate a poly-DABCO salt that coats the ZIF surface via coordination interactions. The resulting hybrid materials, which exhibit dual Lewis acid and base functionalities, demonstrate exceptional activity and stability in catalyzing CO₂ conversion into cyclic carbonates. Interestingly, the catalyst also exhibits high activity in the synthesis of bis(cyclic carbonate) from diepoxide, which subsequently reacts with diamines to form non-isocyanate polyurethanes. A proposed reaction mechanism, combining experimental findings and density functional theory (DFT) calculations, highlights the critical roles of zinc and the ionic polymer in achieving high catalytic performance. Specifically, zinc and ionic polymer are identified as key contributors to epoxide activation and ring-opening processes. This study not only deepens the understanding of ZIF-polymer hybrid materials but also establishes a strong foundation for future advancements in their design, research, and applications.

开发了一种可持续实用的合成zif离子聚合物核壳杂化材料的方法。该工艺采用咪唑、硝酸锌、DABCO（1,4-重氮杂环[2.2.2]辛烷）和1,3,5-三（溴乙基）苯为原料，一锅两步制得效率高。在这种方法中，DABCO通过去质子化咪唑促进ZIF的形成，随后与1,3,5-三（溴乙基）苯反应生成聚DABCO盐，通过配位作用覆盖在ZIF表面。所得到的杂化材料具有双重刘易斯酸和碱功能，在催化二氧化碳转化为环状碳酸盐方面表现出优异的活性和稳定性。有趣的是，该催化剂在二氧化物合成双（环碳酸酯）中也表现出高活性，随后与二胺反应形成非异氰酸酯聚氨酯。结合实验结果和密度泛函理论（DFT）计算，提出了一种反应机制，强调了锌和离子聚合物在实现高催化性能方面的关键作用。具体来说，锌和离子聚合物被认为是环氧化物活化和开环过程的关键因素。这项研究不仅加深了对zif -聚合物杂化材料的理解，而且为其未来的设计、研究和应用奠定了坚实的基础。

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引用次数: 0

Advancing synthetic fuel technology: A model study for the integration of direct air carbon capture and diesel synthesis 推进合成燃料技术：直接空气碳捕获与柴油合成集成的模型研究

IF 8.4 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization

Pub Date : 2026-02-01 Epub Date: 2026-01-10 DOI: 10.1016/j.jcou.2026.103319

Alexander Guzman-Urbina , Tantiwatthanaphanich Thanapan , Jubil Joy , Karina Anaya , Jalil Shadbahr , Amit Kumar , Giovanna Gonzales-Calienes , Shinichirou Morimoto

Direct air capture (DAC) integrated with solid oxide electrolysis (SOEC) and Fischer–Tropsch (FT) synthesis is a promising way to produce carbon-neutral liquid fuels. However, the high demand for renewable electricity, particularly from electrolytic hydrogen production, and limited cross-process integration pose key challenges to this mode of production. This study addressed these constraints by modeling a fully integrated DAC–SOEC–FT diesel system using a commercial, equation-oriented simulation platform under steady-state conditions and assuming that renewable power supplied the SOEC unit. The process design incorporated thermal and process-level integration with waste heat from the calciner, FT reactor, and SOEC burner repurposed for internal heating and feed conditioning. System-derived byproducts (e.g., naphtha, purge gases) were used as internal fuels to minimize external energy inputs and avoid additional emissions. Results showed that under ideal thermal integration scenarios, the theoretical internal recovery of up to 78% of total process heat could substantially reduce reliance on external utilities. While SOEC remained the primary electricity consumer (29.8 MWh/t-diesel), internal energy recovery mitigated auxiliary demands. Cradle-to-gate CO₂ emissions were net-negative and reached –1.20 kg-CO₂/kg-diesel in Japan and –1.56 kg-CO₂/kg-diesel in Canada. These results emphasized the strong synergies unlocked by integrated system design and offered a pathway toward energy-efficient, carbon-negative synthetic diesel suited for hard-to-abate transport sectors.

直接空气捕获（DAC）与固体氧化物电解（SOEC）和费托合成（FT）相结合是一种很有前途的生产碳中性液体燃料的方法。然而，对可再生电力的高需求，特别是来自电解氢生产的高需求，以及有限的跨流程集成，对这种生产模式构成了关键挑战。本研究通过在稳态条件下使用商业化的、面向方程的仿真平台对完全集成的DAC-SOEC-FT柴油系统进行建模，并假设SOEC单元由可再生能源供电，从而解决了这些限制。工艺设计将热和工艺级集成与来自煅烧炉、FT反应器和SOEC燃烧器的废热结合起来，重新用于内部加热和饲料调节。系统衍生的副产品（例如，石脑油，吹扫气体）被用作内部燃料，以尽量减少外部能量输入并避免额外的排放。结果表明，在理想的热集成方案下，理论内部回收高达78%的过程总热量可以大大减少对外部公用设施的依赖。虽然SOEC仍然是主要的电力消费者（29.8兆瓦时/吨柴油），但内部能量回收减轻了辅助需求。从摇篮到闸门的二氧化碳净排放量为负，在日本达到-1.20公斤二氧化碳/公斤柴油，在加拿大达到-1.56公斤二氧化碳/公斤柴油。这些结果强调了集成系统设计所带来的强大协同效应，并为节能、负碳合成柴油的发展提供了一条途径，适用于难以减排的运输部门。

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引用次数: 0