Journal of CO2 Utilization最新文献

{"title":"Perovskite design principles for efficient microwave dry reforming with noble metal free catalysts","authors":"Chris M. Marin ,&nbsp;Eric J. Popczun ,&nbsp;Christina N. Wildfire ,&nbsp;Orhan Kizilkaya ,&nbsp;Douglas R. Kauffman","doi":"10.1016/j.jcou.2026.103337","DOIUrl":"10.1016/j.jcou.2026.103337","url":null,"abstract":"<div><div>Microwave absorbing catalysts have the potential to electrify high-temperature thermal reactions such as the dry reforming of methane process (DRM: CO₂ + CH₄ → 2CO + 2 H₂). However, microwave catalysts present unique challenges due to their dual requirements of maintaining microwave absorption in both oxidative and reductive environments and stability across a range of temperatures in inherently non-isothermal reactors. Here, catalyst candidates from the La_0.8Sr_0.2CoO₃-La_0.8Sr_0.2NiO₃-La_0.8Sr_0.2MnO₃ perovskite systems were screened (28 total) to identify promising microwave catalysts free of noble metals for dry reforming methane. The best performing candidates met two main criteria. First, they occurred at crystal phase boundaries, giving rise to a pseudocubic perovskite structure. The combined use of Goldschmidt tolerance factor and octahedral tolerance factors appeared to be suitable for predicting pseudocubic perovskites. Second, they provided a balance of reducible metal sites with an irreducible metal oxide support. The best performing catalyst was found to exsolve Ni-Co alloy particles as active sites for the DRM reaction which offered superior resistance to coking for excellent reforming efficiency and stability.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"106 ","pages":"Article 103337"},"PeriodicalIF":8.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147600011","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}

{"title":"Study on the kinetic characteristics of CO2 hydrate formation in a pure water system","authors":"Yuanpeng Cheng ,&nbsp;Hucheng Bai ,&nbsp;Xuewen Cao ,&nbsp;Hongchao Wang ,&nbsp;Jiang Bian","doi":"10.1016/j.jcou.2026.103408","DOIUrl":"10.1016/j.jcou.2026.103408","url":null,"abstract":"<div><div>Hydrate-based carbon dioxide sequestration presents a promising strategy for mitigating anthropogenic greenhouse gas emissions. Understanding the formation dynamics of CO₂ hydrates in aqueous systems is critical for optimizing hydrate-based storage technology. This study demonstrates the interfacial nucleation and staged growth mechanisms of CO₂ hydrates in pure water under isobaric conditions (3 MPa, 6 °C). The mechanisms are elucidated using real-time kinetic and thermodynamic analyses. Experimental results reveal that hydrate formation initiates preferentially at the gas–liquid interface and subsequently evolves into porous honeycomb-structured aggregates through three sequential phases: dissolution-dominated gas-liquid mass transfer, a metastable induction/nucleation stage with an extended induction time of 214 min, and rapid hydrate growth at 0.025 mol·min⁻¹. The process achieves a CO₂-to-hydrate conversion efficiency of 67.3%, storing 10.61 L of CO₂ per liter of water with a hydrate volume fraction of 6.12%. These findings highlight the critical role of interfacial dynamics in hydrate crystallization and establish the technical viability of moderate subcooling strategies for energy-efficient carbon sequestration, providing fundamental insights for optimizing hydrate-based carbon capture and storage technologies.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"106 ","pages":"Article 103408"},"PeriodicalIF":8.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147600010","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}

{"title":"Machine learning-driven design of high-performance activated carbons for enhanced CO2 capture","authors":"Ashkan Maleki ,&nbsp;Arash Mehdizad ,&nbsp;Esmaeil Hassani ,&nbsp;Mohammad Naveshki ,&nbsp;Ali Zalakinezhad ,&nbsp;Alimorad Rashidi ,&nbsp;Abdolreza Farhadian ,&nbsp;Dariush Hassanvand Somarin ,&nbsp;Fariba Aghazadeh","doi":"10.1016/j.jcou.2026.103336","DOIUrl":"10.1016/j.jcou.2026.103336","url":null,"abstract":"<div><div>Rising atmospheric CO₂ levels demand efficient carbon capture technologies. Activated carbons (ACs), known for their high surface area and adjustable porosity, offer a promising pathway for CO₂ adsorption. However, optimizing their structural and chemical properties often requires time-intensive experimental trials. This study addresses this challenge by leveraging machine learning (ML) to predict CO₂ adsorption capacity and guide the design of high-performance ACs. A comprehensive dataset, including pore volume, mean pore diameter, adsorption temperature and pressure, and BET surface area, was utilized to train four ML models using K-Fold approach with five folds, with CO₂ uptake as the target parameter. Among the tested models, Gradient Boosting achieved the best performance (R² = 0.9989) with high predictive precision. Experimental validation using asphaltene-derived AC confirmed excellent agreement between predicted and measured CO₂ uptake values. Adsorption experiments at 1 bar and 298 K measured CO₂ uptake at 4.72 mmol/g, closely aligning with the Gradient Boosting model's predicted value of 4.81 mmol/g. The study highlights the model’s capability to simulate CO₂-AC interactions and its potential to reduce the need for extensive experimental trials. 3D plots generated by the Gradient Boosting model provided valuable insights into optimizing textural and adsorption properties to maximize CO₂ uptake. This integrated approach accelerates the discovery and design of high-performance adsorbents, offering a roadmap for sustainable carbon capture solutions.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103336"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170660","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}

{"title":"Supercritical carbon dioxide extraction: Lipid composition and carotene content of used activated bleaching oil in Thailand","authors":"Teerasak Punvichai ,&nbsp;Supranee Patisuwan ,&nbsp;Tharawee Wachiratreeyakul ,&nbsp;Santichai Inrit ,&nbsp;Chatchawan Chotimarkorn ,&nbsp;Sirusa Kritsanapuntu ,&nbsp;Sujitra Arwatchananukul","doi":"10.1016/j.jcou.2026.103361","DOIUrl":"10.1016/j.jcou.2026.103361","url":null,"abstract":"<div><div>Used activated bleaching earth (UABE) from palm oil refining contains significant residual oil and bioactive compounds, offering a potential resource for value-added recovery. This study explores the extraction of oil, carotenoids, and vitamin A from UABE using supercritical carbon dioxide (SC-CO₂) under optimized conditions. The highest oil yield (29.36 ± 0.99 %) was achieved at 35°C, 250 bar, and 120 min, with methanol as a co-solvent. The extracted oil exhibited a fatty acid profile similar to crude palm oil, with 49.88–53.22 % saturated fatty acids, primarily palmitic acid (41.39–45.54 %), and 39.45–40.52 % monounsaturated fatty acids, predominantly oleic acid (39.09–40.25 %). Additionally, the carotene content was 85.74 ± 0.16 mg/kg, with β-carotene at 9.57 mg/kg and vitamin A at 159.55 µg/100 g. The study confirms SC-CO₂ as an effective and environmentally friendly extraction technique, yielding high-quality oil and bioactive compounds. The extracted oil has potential applications in the food, energy, cosmetic, and pharmaceutical industries. In addition, regenerated UABE can be reused for palm oil bleaching, supporting sustainability in waste management. Using methanol as a co-solvent significantly enhances oil extraction efficiency and helps preserve high-value bioactive compounds, making it a promising method for sustainable UABE valorization. However, for consumer safety and environmental sustainability, ethanol is recommended as the co-solvent for SC-CO₂ extraction in commercial-scale industrial applications.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103361"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170662","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}

{"title":"Reaction mechanism and structure-activity relationships of bimetallic catalysts for CO2 hydrogenation to methanol under vapor and liquid phase processes","authors":"Yan Yue ,&nbsp;Hongliang Xiao ,&nbsp;Xiwei Ke ,&nbsp;Bing Chen ,&nbsp;Shouyu Zhang ,&nbsp;Junfu Lyu","doi":"10.1016/j.jcou.2026.103363","DOIUrl":"10.1016/j.jcou.2026.103363","url":null,"abstract":"<div><div>Under the global context of carbon capture, utilization and storage (CCUS), coupling CO₂ with green hydrogen to synthesize green methanol at low temperature has become the development trend of this field. In gas and liquid phase systems, CO₂ hydrogenation demands different intermediates, directly determining the rate determining step and deactivation mechanism, thus requiring different catalyst design. Bimetallic catalysts have become the most promising research topic due to their excellent catalytic performance and stability. Although numerous reviews on CO₂ hydrogenation to methanol exist, most primarily focus on the activity and selectivity of bimetallic catalysts under gas-phase reaction conditions. While certain factors influencing catalytic performance and reaction mechanisms have been addressed, a systematic comparison of bimetallic catalysts from the perspective of gas versus liquid phase hydrogenation, highlighting their similarities and differences during the reaction process, remains rare in the literature. Therefore, after systematically comparing gas and liquid phase hydrogenation processes, this review expounds the reaction mechanism of bimetallic catalysts in gas and liquid phase systems. By comparing intrinsic metal pairs and different supports, analyzing the structure activity relationships in electronic modulation, geometric regulation, and coupling of dual functional mechanisms. Finally, the shortcomings and challenges of bimetallic catalysts such as balancing CO₂ conversion, methanol selectivity, improving catalytic activity and stability, activating in active key intermediates are highlighted. Furthermore, the reaction pathways and key challenges of amine-captured CO₂ hydrogenation to methanol were systematically reviewed and prospected, offering a comprehensive reference framework for the development of low-energy integrated processes and the next generation low temperature CO₂ hydrogenation to methanol catalysts.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103363"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170706","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}

{"title":"Corrigendum to “Fibrous phosphosilicate with highly dispersed poly(ionic liquids) as a nanocatalyst for production of biopolymer from limonene epoxide and CO2“[J. CO2 Util. 90 (2024) 102978]","authors":"Naser Monavari ,&nbsp;Rahele Zhiani ,&nbsp;Malihesadat Hosseiny ,&nbsp;Susan Khosroyar ,&nbsp;Zohreh Ebrahimi ,&nbsp;Mina Moradi","doi":"10.1016/j.jcou.2026.103362","DOIUrl":"10.1016/j.jcou.2026.103362","url":null,"abstract":"","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103362"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147421580","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}

{"title":"Atom by atom: Enhancing CO2 electrolysis efficiency with Ni-NC catalysts using a simplified strategy","authors":"Jaysiva Ganesamurthi ,&nbsp;Selvakumar Palanisamy ,&nbsp;Shen-Ming Chen ,&nbsp;Ruey-Shin Juang ,&nbsp;G. Bharath ,&nbsp;Jin-You Lu ,&nbsp;Abdulrahman Al-Hagri ,&nbsp;Matteo Chiesa","doi":"10.1016/j.jcou.2026.103328","DOIUrl":"10.1016/j.jcou.2026.103328","url":null,"abstract":"<div><div>The search for low-carbon strategies to convert CO₂ into fuels and value-added chemicals has stimulated extensive research efforts. Single-atom catalysts (SACs) have emerged as promising electrocatalysts, as atomically dispersed active sites maximize faradaic efficiency (FE). In this study, we report the synthesis of Ni-phthalocyanine (NiPc) catalysts on carbon supports, further developed into a Ni single-atom catalyst (Ni–NC) featuring four nitrogen coordination sites. Comprehensive characterization using STEM, TEM, XPS, and XAS confirms the structural integrity and atomic dispersion of the active sites. Electrochemical evaluation demonstrates that Ni–NC achieves a high % CO faradaic efficiency of 67 %, with suppressed hydrogen evolution (28 %), underscoring its effectiveness in CO₂ reduction reactions (CO₂RR). Moreover, Ni–NC delivers a superior current density of 12 mA cm⁻², significantly outperforming NiPc. Density functional theory (DFT) calculations reveal that pyridinic nitrogen coordination optimises the binding energy of key reaction intermediates, thereby enhancing the production of CO. This mechanistic insight is further supported by in situ ATR-FTIR analysis. Collectively, these results establish Ni–NC as a highly efficient and selective catalyst for CO₂RR, offering a promising pathway toward improved carbon utilization and sustainable energy conversion. The MEA electrolyzer testing reaches the maximum of 85 % FE toward CO by applying 500 mA current for 20 h that realise the feasibility of this molecular catalyst rational transformative.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103328"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025328","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}

{"title":"Pulsed electrolysis controls copper restructuring via dissolution–redeposition to prolong selective CO2 reduction to ethylene","authors":"Blaž Tomc ,&nbsp;Mitja Kostelec ,&nbsp;Matic Plut ,&nbsp;Primož Šket ,&nbsp;Matjaž Finšgar ,&nbsp;Martin Šala ,&nbsp;Mejrema Nuhanović ,&nbsp;Francisco Ruiz-Zepeda ,&nbsp;Dušan Strmčnik ,&nbsp;Marjan Bele ,&nbsp;Nejc Hodnik","doi":"10.1016/j.jcou.2026.103358","DOIUrl":"10.1016/j.jcou.2026.103358","url":null,"abstract":"<div><div>Pulsed electrolysis is known to enhance the stability of electrochemical CO₂ reduction (ECO₂R) on copper, yet the mechanistic origin of this effect remains poorly understood. Using identical-location electron microscopy in combination with operando impedance spectroscopy, we show that pulsed operation induces continuous and dynamic restructuring of the copper surface. Over 23 h of electrolysis, the catalyst evolved from its initial morphology into a grain-like architecture decorated with dendritic features enriched in high-index facets. This structural evolution was accompanied by a steady increase in the ethylene-to-hydrogen selectivity ratio. Quantitative analysis of the electrolyte during pulsed electrolysis revealed an approximately 30-fold increase in dissolved copper species compared to static operation, identifying redirected dissolution–redeposition of copper as the central mechanistic pathway by which pulsing governs morphology evolution and, consequently, ECO₂R selectivity.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103358"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147421582","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}

{"title":"Progress in dense ceramic catalytic membrane reactors for CO₂ conversion","authors":"Zhenbin Gu ,&nbsp;Yongqiang Niu ,&nbsp;Longlong Fu ,&nbsp;Wanglin Zhou ,&nbsp;Zhengkun Liu ,&nbsp;Guangru Zhang ,&nbsp;Wanqin Jin","doi":"10.1016/j.jcou.2026.103344","DOIUrl":"10.1016/j.jcou.2026.103344","url":null,"abstract":"<div><div>The direct high-temperature splitting of CO₂ into CO and O₂ is a viable conversion method (2CO₂→2CO+O₂) for reusing CO₂. Nevertheless, this reaction is constrained by thermodynamic equilibrium, rendering it challenging to attain CO₂ splitting in conventional fixed-bed reactors. Membrane technology enables the selective removal of products through membrane reactors, thereby circumventing the limitations of thermodynamic equilibrium, and enhancing the conversion rate of CO₂ raw materials and the yield of target products. The performance of a perovskite-type mixed conducting oxygen permeable membrane – a crucial component of mixed conducting dense membrane materials – is of great significance for determining its application potential in areas like oxygen production and high-temperature catalytic reactions. The advancement of catalytic membrane reactors (CMRs) relies on the judicious selection of perovskite membrane materials that exhibit optimal oxygen permeability and stability, and the prudent choice of reaction systems and catalysts within the CMRs. This review presents a summary of the recent developments in perovskite-type mixed conducting membrane materials and perovskite CMRs with a focus on CO₂ splitting. The advancement of innovative membrane reactor technology and the application of perovskite materials in additional CO₂ conversion domains are also discussed.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103344"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075368","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}

{"title":"Enhanced charge transfer in surface-modified NiTiO3 using high-entropy oxide nanoparticles for solar-driven methanol production","authors":"Plassidius J. Chengula,&nbsp;Hazina Charles,&nbsp;JiYeon Seo,&nbsp;Minjong Kim,&nbsp;Caroline Sunyong Lee","doi":"10.1016/j.jcou.2026.103346","DOIUrl":"10.1016/j.jcou.2026.103346","url":null,"abstract":"<div><div>The photocatalytic reduction of CO₂ into solar fuels for harnessing solar energy was achieved through the synthesis of a heterostructure comprising a high-entropy oxide (HEO) of (CoCrFeNi)O_x and NiTiO₃ nanorods (NTO) prepared by an ammonia evaporation technique. The HEO/NTO heterostructure demonstrated outstanding efficiency in photocatalytic CO₂ reduction, as the incorporation of HEO into NTO generated intrinsic electric fields that significantly enhanced charge transfer and suppressed charge carrier recombination. X-ray photoelectron spectroscopy confirmed that HEO acts as a photogenerated electron donor within the HEO/NTO heterostructure. Furthermore, in-situ diffuse reflectance infrared Fourier transform spectroscopy verified the formation of *CH₃O and *COOH intermediates, which helped elucidate the kinetic characteristics of the reaction pathway involved in the conversion of CO₂ to CH₃OH. The optimized HEO/NTO heterojunction exhibited superior photocatalytic CO₂ reduction activity, achieving a methanol production rate of 618 μmol g^–1 h^–1, which is 9.6 times higher than that of pure NTO. The remarkable enhancement in CO₂ reduction was primarily attributed to the efficient transport of photoexcited electrons and holes facilitated by the HEO/NTO heterostructure, as demonstrated by photoluminescence spectra, electrochemical impedance spectroscopy, and transient photocurrent response analyses. Overall, this study presents a promising strategy for the rational design of high-performance heterostructures to improve the transport, separation, and utilization of light-induced charge carriers.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103346"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075371","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}