{"title":"Supercritical carbon dioxide extraction: Lipid composition and carotene content of used activated bleaching oil in Thailand","authors":"Teerasak Punvichai , Supranee Patisuwan , Tharawee Wachiratreeyakul , Santichai Inrit , Chatchawan Chotimarkorn , Sirusa Kritsanapuntu , 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}
Yan Yue , Hongliang Xiao , Xiwei Ke , Bing Chen , Shouyu Zhang , Junfu Lyu
{"title":"Reaction mechanism and structure-activity relationships of bimetallic catalysts for CO2 hydrogenation to methanol under vapor and liquid phase processes","authors":"Yan Yue , Hongliang Xiao , Xiwei Ke , Bing Chen , Shouyu Zhang , 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 CO<sub>2</sub> with green hydrogen to synthesize green methanol at low temperature has become the development trend of this field. In gas and liquid phase systems, CO<sub>2</sub> 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 CO<sub>2</sub> 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 CO<sub>2</sub> 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 CO<sub>2</sub> 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 CO<sub>2</sub> 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}
Naser Monavari , Rahele Zhiani , Malihesadat Hosseiny , Susan Khosroyar , Zohreh Ebrahimi , Mina Moradi
{"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 , Rahele Zhiani , Malihesadat Hosseiny , Susan Khosroyar , Zohreh Ebrahimi , 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}
Jaysiva Ganesamurthi , Selvakumar Palanisamy , Shen-Ming Chen , Ruey-Shin Juang , G. Bharath , Jin-You Lu , Abdulrahman Al-Hagri , Matteo Chiesa
{"title":"Atom by atom: Enhancing CO2 electrolysis efficiency with Ni-NC catalysts using a simplified strategy","authors":"Jaysiva Ganesamurthi , Selvakumar Palanisamy , Shen-Ming Chen , Ruey-Shin Juang , G. Bharath , Jin-You Lu , Abdulrahman Al-Hagri , 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}
Blaž Tomc , Mitja Kostelec , Matic Plut , Primož Šket , Matjaž Finšgar , Martin Šala , Mejrema Nuhanović , Francisco Ruiz-Zepeda , Dušan Strmčnik , Marjan Bele , Nejc Hodnik
{"title":"Pulsed electrolysis controls copper restructuring via dissolution–redeposition to prolong selective CO2 reduction to ethylene","authors":"Blaž Tomc , Mitja Kostelec , Matic Plut , Primož Šket , Matjaž Finšgar , Martin Šala , Mejrema Nuhanović , Francisco Ruiz-Zepeda , Dušan Strmčnik , Marjan Bele , 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 CO<sub>2</sub> reduction (ECO<sub>2</sub>R) 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, ECO<sub>2</sub>R 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}
Zhenbin Gu , Yongqiang Niu , Longlong Fu , Wanglin Zhou , Zhengkun Liu , Guangru Zhang , Wanqin Jin
{"title":"Progress in dense ceramic catalytic membrane reactors for CO₂ conversion","authors":"Zhenbin Gu , Yongqiang Niu , Longlong Fu , Wanglin Zhou , Zhengkun Liu , Guangru Zhang , 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 CO<sub>2</sub> into CO and O<sub>2</sub> is a viable conversion method (2CO<sub>2</sub>→2CO+O<sub>2</sub>) for reusing CO<sub>2</sub>. Nevertheless, this reaction is constrained by thermodynamic equilibrium, rendering it challenging to attain CO<sub>2</sub> 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 CO<sub>2</sub> 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 CO<sub>2</sub> splitting. The advancement of innovative membrane reactor technology and the application of perovskite materials in additional CO<sub>2</sub> 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}
Plassidius J. Chengula, Hazina Charles, JiYeon Seo, Minjong Kim, Caroline Sunyong Lee
{"title":"Enhanced charge transfer in surface-modified NiTiO3 using high-entropy oxide nanoparticles for solar-driven methanol production","authors":"Plassidius J. Chengula, Hazina Charles, JiYeon Seo, Minjong Kim, 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 CO<sub>2</sub> into solar fuels for harnessing solar energy was achieved through the synthesis of a heterostructure comprising a high-entropy oxide (HEO) of (CoCrFeNi)O<sub>x</sub> and NiTiO<sub>3</sub> nanorods (NTO) prepared by an ammonia evaporation technique. The HEO/NTO heterostructure demonstrated outstanding efficiency in photocatalytic CO<sub>2</sub> 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 *CH<sub>3</sub>O and *COOH intermediates, which helped elucidate the kinetic characteristics of the reaction pathway involved in the conversion of CO<sub>2</sub> to CH<sub>3</sub>OH. The optimized HEO/NTO heterojunction exhibited superior photocatalytic CO<sub>2</sub> reduction activity, achieving a methanol production rate of 618 μmol g<sup>–1</sup> h<sup>–1</sup>, which is 9.6 times higher than that of pure NTO. The remarkable enhancement in CO<sub>2</sub> 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}
Manthila Perera , Veli-Matti Taavitsainen , Santeri Pykäläinen , Astrid Andersin , Esko Tirronen , Pekka Oinas , Rofice Dickson
{"title":"Supercritical CO2 extraction of lingonberry (Vaccinium vitis-idaea) pomace: Optimization studies using response surface methodology, and extraction kinetics","authors":"Manthila Perera , Veli-Matti Taavitsainen , Santeri Pykäläinen , Astrid Andersin , Esko Tirronen , Pekka Oinas , Rofice Dickson","doi":"10.1016/j.jcou.2026.103349","DOIUrl":"10.1016/j.jcou.2026.103349","url":null,"abstract":"<div><div>The lipophilic extracts of lingonberry pomace have important applications in cosmetics, food-grade coatings and films, and other food engineering processes due to their antimicrobial, antioxidant, and hydrophobic properties. In this study, supercritical carbon dioxide extraction (Sc-CO<sub>2</sub>) was employed to recover valuable lipophilic components from lingonberry pomace. Experiments were designed using the Design of Experiments (DOE) approach. To optimize the extraction conditions, Response Surface Methodology (RSM) was used at experimental ranges with pressure of 190–310 bar, temperature of 38–62 °C, and CO₂ flow rate of 9–21 g/min. Optimization showed that the highest yield of 4.22 wt% was achieved under conditions of 276 bar, 62 °C, and 21 g/min with an extraction time of 380 min. The extraction yield was significantly influenced by the linear effects of CO₂ flow rate and pressure, along with the negative quadratic effect of pressure. Temperature displayed only marginal influence, through its interaction with flow rate. The overall extraction curves (OEC) were developed and well described by spline fitting, and kinetic parameters and the mass transfer coefficients were derived from the experimental data. Both the kinetic parameters and calculated mass transfer coefficients were positively and predominantly influenced by CO<sub>2</sub> flow rate. The observed kinetic behaviour indicated that the extraction process was primarily limited by internal diffusion. These findings on extraction kinetics facilitate the estimation of initial batch cycle durations and provide a basis to define scale‑up criteria essential for process scale-up and subsequent economic evaluations.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103349"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170654","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}
Hubert Ronduda , Wojciech Patkowski , Michał Młotek , Elżbieta Truszkiewicz , Andrzej Ostrowski , Kamil Sobczak , Artur Małolepszy , Wioletta Raróg-Pilecka
{"title":"Development of BaO/Nd2O3/Co catalyst for efficient hydrogen-based fuels production via inverse design strategy","authors":"Hubert Ronduda , Wojciech Patkowski , Michał Młotek , Elżbieta Truszkiewicz , Andrzej Ostrowski , Kamil Sobczak , Artur Małolepszy , Wioletta Raróg-Pilecka","doi":"10.1016/j.jcou.2026.103350","DOIUrl":"10.1016/j.jcou.2026.103350","url":null,"abstract":"<div><div>Hydrogen is considered one of the most promising energy carriers, allowing for more sustainable and efficient energy solutions. However, hydrogen storage remains a formidable challenge in utilizing hydrogen to generate clean energy. To overcome these challenges, various hydrogen-based storage materials have been explored. Ammonia is currently regarded as a preeminent candidate due to its high hydrogen content and energy density. Herein, we report the development of a cobalt-based catalyst loaded with barium and neodymium oxide promoters, featuring an inverse oxide/metal configuration, for hydrogen-based fuels production. Unlike conventional supported catalysts, in which the metal is dispersed on the support, the inverse catalyst design involves loading promoters onto the metal, forming an oxide-on-metal structure with enhanced metal–oxide interfacial interactions. The developed catalyst exhibited high catalytic activity for ammonia synthesis, outperforming the commercial fused iron catalyst. Moreover, it exhibited superior performance in ammonia decomposition and carbon oxides hydrogenation, confirming its versatility. Comprehensive characterization studies have revealed that the inverse oxide/metal structure induces strong electronic interactions between cobalt and promoter oxides, facilitating reactant activation and thereby improving catalytic performance. This study demonstrates that the inverse oxide/metal design represents a rational strategy for developing efficient catalysts, offering a pathway toward sustainable hydrogen-based fuels production under environmentally friendly conditions.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103350"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170710","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":"CO2 and steam-CO2 reforming of ethanol over CuО/Al2O3 catalysts: Influence of additives on catalyst coking","authors":"Gaukhar Yergaziyeva , Moldir Anissova , Nursaya Makayeva , Laura Myltykbayeva , Manshuk Mambetova , Zhengisbek Kuspanov , Chingis Daulbayev , Madina Bissenova","doi":"10.1016/j.jcou.2026.103333","DOIUrl":"10.1016/j.jcou.2026.103333","url":null,"abstract":"<div><div>The effect of γ-Al₂O₃ modification with CeO₂ and La₂O₃ oxides on the catalytic and performance characteristics of copper catalysts in CO₂ reforming and steam–CO₂ reforming of ethanol is investigated. Catalysts with compositions of 10 wt% CuO/Al₂O₃, 10 wt% CuO/2 wt% CeO₂–Al₂O₃ and 10 wt% CuO/2 wt% La₂O₃–Al₂O₃ were synthesized, characterized by TPD-CO₂, TPR-H₂, TPO, TGA/DTA and XRD techniques, and tested in the temperature range of 500–800 °C. The addition of La₂O₃ was shown to generate the strongest basic sites and suppress the formation of the CuAl₂O₄ spinel phase, resulting in an optimal combination of high CO₂ conversion (95 %), maximum hydrogen concentration (55.3 vol%), and minimal coking under steam–CO₂ reforming conditions. In contrast, CeO₂ addition enhances oxygen mobility and promotes ethanol dehydration activity but leads to the highest ethylene yield (67.5 vol%) and the greatest coke deposition (167 mgC/gcat), particularly in the presence of steam. A linear correlation (R² ≈ 0.98) between ethylene yield and the amount of deposited carbon was identified, indicating the key role of ethylene as a coke precursor in the investigated systems. Thermogravimetric analysis of spent catalysts revealed that the La-modified catalyst accumulated the lowest amount of predominantly reactive carbon species and exhibited the lowest deactivation rate. The obtained results establish the relationship between basicity, redox properties, and coking tendency in CuO/Al₂O₃–CeO₂/La₂O₃ systems, providing a rational basis for the design of stable copper catalysts for ethanol reforming with simultaneous CO₂ utilization.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103333"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025237","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}