Journal of CO2 Utilization最新文献_第2页

Effect of promoters on the syngas production in the microwave-enhanced methane dry reforming over Ni-x/AC (x = Mg, Ca, La, Ce) catalysts

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-19 DOI: 10.1016/j.jcou.2025.103064

Miaomiao Zhang, Yibo Gao, Wenlong Wang, Zhanlong Song, Yanpeng Mao

{"title":"Effect of promoters on the syngas production in the microwave-enhanced methane dry reforming over Ni-x/AC (x = Mg, Ca, La, Ce) catalysts","authors":"Miaomiao Zhang, Yibo Gao, Wenlong Wang, Zhanlong Song, Yanpeng Mao","doi":"10.1016/j.jcou.2025.103064","DOIUrl":"10.1016/j.jcou.2025.103064","url":null,"abstract":"<div><div>Capitalizing on the targeted energy transfer, microwave-enhanced dry reforming of methane (MW-DRM) is an attractive CO<sub>2</sub> valorization technology. However, this process coupled with carbon-based catalysts may suffer from rapid deactivation due to severe carbon deposition/loss or active metal sintering. In this study, activated carbon (AC)-supported Ni catalysts modified with different promoters (Mg, Ca, La, Ce) were investigated for MW-DRM process. As proved by the experiment results, Ca-promoted catalyst exhibited the worst reforming activity and stability in the MW-DRM and conventional heating DRM (CH-DRM) processes due to the severe carbon gasification of AC support and the severe sintering of the active metal. Compared to Mg, Ca, and La promoters, Ni-Ce/AC catalyst was demonstrated the optimum catalyst for MW-DRM process, which showed the most excellent stability with good reforming activity over 96 % and 98 % for CH<sub>4</sub> and CO<sub>2</sub> conversion rates, respectively. By converting MW energy attenuation into heat and plasma, the locally-formed high-energy active sites composed of adjacent Ni, CeO<sub>2</sub> and AC support of the Ni-Ce/AC catalyst could contribute to achieving the effective and localized activation of CH<sub>4</sub> and CO<sub>2</sub> molecules, thus leading to the enhancement of the reforming activity and the reduction of the loss of AC support due to CO<sub>2</sub> gasification. Moreover, MW heating method could avoid the excessive consumption of the AC support in Ni-Ce/AC by increasing the graphitization degree of AC, thus prolonging the lifetime of the AC-based catalysts. Above all, these findings provide new insights for the synergistic effect of MW with AC-based catalysts for syngas production.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"95 ","pages":"Article 103064"},"PeriodicalIF":7.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV) impregnated with mango leaves extracts using supercritical solvent impregnation

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-18 DOI: 10.1016/j.jcou.2025.103062

Ludisbel León-Marcos, Antonio Montes, Diego Valor, Ignacio García-Casas, Noelia D. Machado, Clara Pereyra

{"title":"Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV) impregnated with mango leaves extracts using supercritical solvent impregnation","authors":"Ludisbel León-Marcos, Antonio Montes, Diego Valor, Ignacio García-Casas, Noelia D. Machado, Clara Pereyra","doi":"10.1016/j.jcou.2025.103062","DOIUrl":"10.1016/j.jcou.2025.103062","url":null,"abstract":"<div><div>The impregnation of the polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV) with mango leaves extract (MLE) was carried out using the Supercritical Solvent Impregnation method. The impregnation loads, antioxidant compounds and physical properties of impregnated polymers were investigated with the variation of operating parameters (temperature (35 and 55 °C), pressure (10, 20 and 30 MPa) and depressurization rate (0.1 and 5 MPa/min)). Furthermore, the influence of varying impregnation times (1, 3, 6, 10, 24 h) with 30 MPa, 35 °C and 5 MPa/min was also investigated and the antimicrobial capacity (AC) was determined. The results showed a decrease of the impregnation loads, antioxidant and antimicrobial capacities with increasing impregnation time. At 30 MPa, 35 ºC and 5 MPa/min with an impregnation time of 1 h, impregnation loads and antioxidant capacities of 2.82 ± 0.04 mg MLE/100 mg PHB-HV and 2.77 ± 0.10 mg AC/100 mg PHB-HV, respectively, and a growth inhibition percentage against <em>Staphylococcus aureus</em> and <em>Escherichia coli</em> bacteria greater than 60 % were obtained.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"95 ","pages":"Article 103062"},"PeriodicalIF":7.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep eutectic solvent-based slurry for CO2 capture: Enhanced efficiency and kinetics

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-18 DOI: 10.1016/j.jcou.2025.103065

Sahar Foorginezhad, Xiaoyan Ji

{"title":"Deep eutectic solvent-based slurry for CO2 capture: Enhanced efficiency and kinetics","authors":"Sahar Foorginezhad, Xiaoyan Ji","doi":"10.1016/j.jcou.2025.103065","DOIUrl":"10.1016/j.jcou.2025.103065","url":null,"abstract":"<div><div>The imperative need to mitigate CO<sub>2</sub> emissions has become increasingly critical due to their severe impact on environmental sustainability and public health. Among the emerging carbon capture technologies, deep eutectic solvent (DES)-based technologies have attracted significant attention owing to their facile synthesis and superior CO<sub>2</sub> capture capacity. However, their widespread industrial deployment has been hindered by challenges associated with high viscosity and cost. To address these limitations, this study adopts novel a approach that synergistically integrates cosolvent addition and immobilization to develop a slurry with enhanced CO<sub>2</sub> capture efficiency. Specifically, an aqueous DES solution was formulated using imidazolium chloride-ethylenediamine ([ImCl][EDA]) in a 1:6 molar ratio with water as the cosolvent, followed by the immobilization of DES onto mesoporous silica to form a composite slurry. CO<sub>2</sub> capture experiments revealed a high sorption capacity of 28.34 wt% at 22 °C and 1 bar, along with rapid sorption and desorption rates of 1.39 and 0.30 mol CO<sub>2</sub>/(kg sorbent·min) within the first 2 min. Furthermore, the slurry exhibited excellent cyclic stability, maintaining a 98 % recovery rate. The significant improvements in CO<sub>2</sub> capture capacity, desorption kinetics, and thermal stability underscore the potential of this hybrid system for scalable industrial applications in carbon capture and utilization.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"95 ","pages":"Article 103065"},"PeriodicalIF":7.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon dioxide utilization in mineral processing

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-17 DOI: 10.1016/j.jcou.2025.103063

Phakamile Ndlovu , Mandla B. Chabalala , Mohau Rampou , Siphesihle Praise-God Khumalo , Simbarashe Fashu , Douglas Hungwe

{"title":"Carbon dioxide utilization in mineral processing","authors":"Phakamile Ndlovu , Mandla B. Chabalala , Mohau Rampou , Siphesihle Praise-God Khumalo , Simbarashe Fashu , Douglas Hungwe","doi":"10.1016/j.jcou.2025.103063","DOIUrl":"10.1016/j.jcou.2025.103063","url":null,"abstract":"<div><div>Mining and mineral processing, significant contributors to CO₂ emissions, can reduce their carbon footprint and support a circular economy by integrating CO₂ into various unit operations, offering a promising way to mitigate emissions while enhancing mineral recovery and waste management. This review examines CO₂ utilization in leaching, flotation, wastewater treatment, and CO₂ sequestration via mineral carbonation using tailings. Emerging CO₂-augmented leaching techniques, including CO₂-water, supercritical CO₂, CO₂-ammonia, ionic-liquid, and CO₂-cyanide leaching have shown improved performance for a limited number of minerals at the laboratory scale. Similar to its role in leaching, CO₂ can act as a depressant or pH modifier in flotation, improving process selectivity and efficiency while reducing the need for additional chemicals. For water treatment, CO₂ facilitates the precipitation of heavy metals and contaminants under optimal conditions. CO₂ sequestration through mineral carbonation provides a sustainable method for locking CO₂ in stable mineral forms, utilizing tailings for both waste management and carbon capture. CO₂ utilization in flotation, leaching, and water treatment is currently limited to lab-scale experiments, emphasizing the need for scale-up trials to fully assess technical feasibility and identify potential bottlenecks associated with large-scale implementation. This review also identifies key challenges, including process optimization, scalability, and the need for further technological advancements. Future research should address these barriers to enable the practical integration of CO₂ utilization into mineral processing operations.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103063"},"PeriodicalIF":7.2,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micro-crosslinked thermoplastic polyurethane foam with ultra-low density, excellent resilience and recycling by supercritical CO2/N2

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-13 DOI: 10.1016/j.jcou.2025.103061

Xiulu Gao, Chenyang Niu, Jiaqi Wang, Yue Wu, Yichong Chen, Ling Zhao, Dongdong Hu

{"title":"Micro-crosslinked thermoplastic polyurethane foam with ultra-low density, excellent resilience and recycling by supercritical CO2/N2","authors":"Xiulu Gao, Chenyang Niu, Jiaqi Wang, Yue Wu, Yichong Chen, Ling Zhao, Dongdong Hu","doi":"10.1016/j.jcou.2025.103061","DOIUrl":"10.1016/j.jcou.2025.103061","url":null,"abstract":"<div><div>Supercritical CO<sub>2</sub> foaming can produce cushioning materials with excellent performance, such as thermoplastic polyurethane (TPU) foam. However, TPU foam generally face the issues of low mechanical resilience and hard recycling. The foaming properties of TPU and the dimensional stability of the product are affected by the molecular structure of the matrix. In this study, the diphenylmethane diisocyanate (MDI) masterbatch, a special modifier for TPU, was selected to prepare modified TPU with micro-crosslinking structure and chain extension. The micro-crosslinking structure limited the large-scale relaxation of molecular chains and enhanced the rheological properties and foaming behavior of TPU. The maximum expansion ratio of TPU foam was increased from 14.5 to 28.3. The shrinkage problem was optimized through CO<sub>2</sub>/N<sub>2</sub> foaming. TPU foams with different stabilized expansion ratios (7–15.9) were produced by changing the N<sub>2</sub> partial pressure. The ultra-high expansion ratio and uniform cell structure provided high relative stress softening (＞95 %), low relative hysteresis loss (∆<em>U</em>/<em>U</em>≈5 %) and excellent resilience (∼70.1 %) for TPU foam. This product is promised to realize light-weighting and efficient energy recovery of TPU foam. After a closed-loop sustainable recycling and foaming process, the recyclable RTPU foam still maintained high expansion ratio and low energy loss.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103061"},"PeriodicalIF":7.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilization of carbon dioxide and nitrate to produce sodium bicarbonate through a nitrate hydrogenation method

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-12 DOI: 10.1016/j.jcou.2025.103060

Hee Sun Park , Jae Yeon Kim , Hee Jung Yang , Youlim Chung , Jonggeol Na , Nam Hwi Hur

{"title":"Utilization of carbon dioxide and nitrate to produce sodium bicarbonate through a nitrate hydrogenation method","authors":"Hee Sun Park , Jae Yeon Kim , Hee Jung Yang , Youlim Chung , Jonggeol Na , Nam Hwi Hur","doi":"10.1016/j.jcou.2025.103060","DOIUrl":"10.1016/j.jcou.2025.103060","url":null,"abstract":"<div><div>Sodium carbonate (Na<sub>2</sub>CO<sub>3</sub>), known as soda ash, is used in various industrial processes such as glass making, detergent, metallurgy, and water treatment, which is produced from salt brine (NaCl) and limestone (CaCO<sub>3</sub>) in the presence of ammonia by the Solvay process. Although the Solvay process is fully optimized, it requires large amounts of energy, generates significant CO<sub>2</sub> emissions, and produces undesirable byproducts. Here we describe a catalytic strategy that can address the energy and environmental challenges facing the Solvay process. The hydrogen-bearing H<sub>x</sub>RuO<sub>2</sub> catalyst selectively hydrogenates nitrate to ammonia, facilitating the conversion of CO<sub>2</sub> into sodium bicarbonate (NaHCO<sub>3</sub>) through mineralization and yielding valuable ammonium bicarbonate (NH<sub>4</sub>HCO<sub>3</sub>). We also report on the techno economic analysis and life cycle assessment of the catalytic process compared to the Solvay process via rigorous commercial-scale process design and thereby propose a clear solution to mitigating CO<sub>2</sub> emission, reducing energy consumption, and alleviating the environmental threat without loss of economic feasibility. The newly developed catalytic route might offer a promising alternative process to produce soda ash via an atom economic synthetic route.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103060"},"PeriodicalIF":7.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanochemistry as an efficient method in Cu/P25 photocatalysts synthesis for CO2 photoreduction

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-08 DOI: 10.1016/j.jcou.2025.103055

Piotr Patulski, Javier Fernández-Catalá, Ángel Berenguer-Murcia, Diego Cazorla-Amorós

{"title":"Mechanochemistry as an efficient method in Cu/P25 photocatalysts synthesis for CO2 photoreduction","authors":"Piotr Patulski, Javier Fernández-Catalá, Ángel Berenguer-Murcia, Diego Cazorla-Amorós","doi":"10.1016/j.jcou.2025.103055","DOIUrl":"10.1016/j.jcou.2025.103055","url":null,"abstract":"<div><div>The presented research focuses on the implementation of mechanochemistry in the synthesis of TiO<sub>2</sub>-based catalysts with Cu-based species for CO<sub>2</sub> photoreduction. Using a simple and reproducible methodology, 1 wt% of Cu was incorporated on P25 by ball milling using three metal precursor salts. The impregnation of copper was successful using mechanochemistry synthesis, being the percentages of copper impregnated very close to the nominal values. Our results indicate that Cu species are successfully loaded on the surface of P25 titania, which under the milling conditions may develop a detectable amount of brookite phase. When tested in the CO<sub>2</sub> reduction reaction under UV light the highest conversion of CO<sub>2</sub> towards CH<sub>4</sub> and CH<sub>3</sub>CHO was obtained for the series of washed samples, which reached CH<sub>4</sub> production rates over 70 μmol/g·h. These samples performed better compared to their unwashed equivalents in the photocatalytic tests. This highlights the washing step as crucial to fully uncover the potential of the prepared catalysts. The accomplished research and acquired results exhibit a significant potential in applying mechanochemistry for an efficient, environmentally friendly, and simple synthesis method for photocatalysts preparation.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103055"},"PeriodicalIF":7.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of surface patterning on the reactivity of Cu2O (100) under working conditions: Ab initio analysis of CO2 adsorption and activation

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-07 DOI: 10.1016/j.jcou.2025.103056

Zhiwei Wang , Botond Szilágyi , Houhou Huang , Fu-Quan Bai

{"title":"Impact of surface patterning on the reactivity of Cu2O (100) under working conditions: Ab initio analysis of CO2 adsorption and activation","authors":"Zhiwei Wang , Botond Szilágyi , Houhou Huang , Fu-Quan Bai","doi":"10.1016/j.jcou.2025.103056","DOIUrl":"10.1016/j.jcou.2025.103056","url":null,"abstract":"<div><div>This research intensively explored the impact of surface patterning on Cu<sub>2</sub>O (100) reactivity under real conditions. Modeling studies were conducted on CO<sub>2</sub> adsorption and dissociation post-patterning treatments. Ab initio molecular dynamics (AIMD) simulations verified the stability of three increasingly deep, plausible groove structures. From the perspective of electronic structure, the shift of the d‐band center towards the Fermi level indicated that the groove configurations were beneficial to the adsorption of gas molecules, which was also verified by the adsorption energy calculation results. By analyzing the Partial Density of States (PDOS) and Bader charge, it was revealed that charge transfer occurred between CO<sub>2</sub> and the groove surfaces, and CO<sub>2</sub> was activated by the strong interaction with the patterned surface. The dissociation energy barrier calculated by CI-NEB method suggested that the dissociation ability of CO<sub>2</sub> was inversely proportional to its adsorption capacity. Subsequently, by calculating the reaction rate constant and analyzing the competitive relationship between the Hydrogen Evolution Reaction (HER) and dissociation reactions, it was comprehensively determined that the G3 patterned configuration was more conducive to the occurrence of CO<sub>2</sub> dissociation reactions. Our calculations clarified the differences in CO<sub>2</sub> adsorption and dissociation among various configurations and demonstrated the crucial role played by unsaturated three-coordinated oxygen atoms in the process of CO<sub>2</sub> adsorption and dissociation, which was contrary to the traditional view that the exposure of oxygen atoms was unfavorable for adsorption. This research is closely related to the current development and design of efficient catalysts for the capture and recovery of gaseous pollutants.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103056"},"PeriodicalIF":7.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative life cycle assessment of CO2 onshore transport in China: Pipeline or tanker truck?

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-07 DOI: 10.1016/j.jcou.2025.103057

Changgen Dong , Jingjing Jiang , Bin Ye , Zhuoluo Sun , Yanan Zhang , Changyou Xia

{"title":"Comparative life cycle assessment of CO2 onshore transport in China: Pipeline or tanker truck?","authors":"Changgen Dong , Jingjing Jiang , Bin Ye , Zhuoluo Sun , Yanan Zhang , Changyou Xia","doi":"10.1016/j.jcou.2025.103057","DOIUrl":"10.1016/j.jcou.2025.103057","url":null,"abstract":"<div><div>The transport of CO<sub>2</sub> plays a crucial role in the application of carbon capture, utilisation, and storage technology, significantly affecting the economy and emission reduction effectiveness of this technology. Nevertheless, a noticeable gap exists in the literature regarding the comprehensive assessment and comparison of different onshore transport modes specifically focused on China. In particular, there is a lack of evaluation research on tanker truck transport. This study employs a life cycle assessment approach to evaluate and compare the cost and carbon footprint of pipeline and tanker truck transport methods of CO<sub>2</sub> in China. The assessments show that, with a 20-year operating time, the costs for pipeline and tanker truck transport in China stand at 0.2584 and 0.2306 CNY/t·km, respectively. The life cycle carbon emissions for pipeline transport of CO<sub>2</sub> is 0.0939 kg/t·km, 9.62 % less than tanker truck transport. The production of pipelines primarily dictates the cost and carbon footprint of pipeline transport, whereas tanker truck transport is mainly affected by the operation and maintenance processes. Operating years, price factors and discount rates affect the unit transport cost of both modes, while transport distance influences the comparison of the carbon footprint; changes in these factors together shape the decision of the optimal mode of transport. This study proposes enhancing the overall benefit of CO<sub>2</sub> transport through a combination of vehicle-pipeline transport and reducing transport carbon emissions by enhancing pipeline anti-corrosion and other methods.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103057"},"PeriodicalIF":7.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring a new silica-supported Brønsted-Lewis ionic liquid catalyst for the cycloaddition of CO2 and propylene oxide: A combined experimental and computational study

IF 7.2 2区工程技术

Journal of CO2 Utilization Pub Date : 2025-03-06 DOI: 10.1016/j.jcou.2025.103048

Heriberto Díaz Velázquez , Karla Vanessa Vega-Calleja , Raju Lipin , Matthias Vandichel , Luis Eduardo Quintero-Mondragón , Jazmín N. Castillo-Cervantes , José Gonzalo Hernández-Cortez , Rafael Martínez-Palou

{"title":"Exploring a new silica-supported Brønsted-Lewis ionic liquid catalyst for the cycloaddition of CO2 and propylene oxide: A combined experimental and computational study","authors":"Heriberto Díaz Velázquez , Karla Vanessa Vega-Calleja , Raju Lipin , Matthias Vandichel , Luis Eduardo Quintero-Mondragón , Jazmín N. Castillo-Cervantes , José Gonzalo Hernández-Cortez , Rafael Martínez-Palou","doi":"10.1016/j.jcou.2025.103048","DOIUrl":"10.1016/j.jcou.2025.103048","url":null,"abstract":"<div><div>The field of liquid phase catalysis has explored the replacement of traditional solvents with ionic liquids, as well as the use of ionic liquids as catalyst. Herein, a novel silica-supported Fe-based Brønsted-Lewis functionalized ionic liquid (BLsIL-Fe) was synthesized and used as a catalyst for the cycloaddition of CO<sub>2</sub> to propylene oxide, yielding propylene carbonate. The catalyst was prepared by grafting a sulfonic acid-functionalized imidazole with a FeCl<sub>4</sub><sup>-</sup> complex anion onto a commercial silica support (silica gel 60). The effects of temperature, pressure, catalyst loading, and reaction time on the catalytic activity of BLsILs were investigated. Our findings reveal that our catalyst remained active at a low catalyst loading of 0.18 mol% (active sites per mol of propylene oxide) at 120 °C, achieving up to 90.5 % conversion with a propylene carbonate selectivity above 97.0 % after four hours. The catalyst demonstrated reusability through a simple filtration and washing procedure, maintaining its catalytic activity over five cycles. Plausible catalytic reaction pathways for the CO<sub>2</sub> valorization process using BLsILs were elucidated using density functional theory, revealing that the ring-closing step is the rate determining step. Overall, the work opens new avenues for designing dual-acid functionalized ILs, enhancing performance across a wide range of catalytic reactions.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"94 ","pages":"Article 103048"},"PeriodicalIF":7.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0