Journal of CO2 Utilization最新文献

{"title":"Accelerating sustainable development in hard-to-abate sectors: An economic case for enzymatic carbon capture","authors":"Meng Ding ,&nbsp;Yuqi Ji ,&nbsp;Du Yanchen","doi":"10.1016/j.jcou.2025.103284","DOIUrl":"10.1016/j.jcou.2025.103284","url":null,"abstract":"<div><div>The continuous rise in atmospheric carbon dioxide (CO₂) levels, primarily driven by extensive petroleum energy consumption, is a major contributor to global climate change. A promising approach to mitigate this issue is Carbon Capture, Utilization, and Storage (CCUS), where CO₂ capture plays a pivotal role. Among emerging biological solutions, carbonic anhydrase—a natural enzyme that catalyzes the conversion of CO₂ into bicarbonate—has gained considerable attention for its potential in efficient carbon capture. Despite its promise, large-scale industrial application faces challenges due to the enzyme’s instability, volatility, and high production costs. To address these limitations, three key strategies have been developed: enzyme engineering to improve performance, immobilization techniques to enhance stability and reusability, and the development of synthetic analogs known as carbonic anhydrase mimics. These approaches not only improve the enzyme's resilience but also expand its applicability in harsh industrial conditions. Additionally, studies are focusing on optimizing the interaction between support materials and the enzyme to boost catalytic efficiency. The development of enzyme mimics, particularly through improved metal-ligand coordination, offers a cost-effective and stable alternative. Collectively, these innovations represent a significant step toward sustainable carbon management, providing scalable and environmentally friendly solutions for reducing greenhouse gas emissions.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"103 ","pages":"Article 103284"},"PeriodicalIF":8.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749788","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":"Thermodynamic analysis of CO2 methanation for power-to-gas applications: Impact of in-situ water removal on performances and heat release","authors":"S.G. Acierno,&nbsp;C. Finelli,&nbsp;A. Lancia,&nbsp;A. Erto","doi":"10.1016/j.jcou.2025.103226","DOIUrl":"10.1016/j.jcou.2025.103226","url":null,"abstract":"<div><div>This study presents a comprehensive thermodynamic analysis of CO₂ methanation, aimed at identifying optimal operating conditions for a reaction governed by a complex network. Simulations were performed in Aspen Plus® using Gibbs free energy minimization. Key variables were systematically investigated, including temperature (200–500 °C), pressure (1, 5, 10 and 30 atm), and H_2/CO₂ molar ratio (2:1, 4:1, 6:1). A special attention is given to selective water removal, analyzed across a full range (0–100 %) to simulate sorption-enhanced and membrane reactor systems. For these scenarios, the H_2/CO₂ ratio was fixed at 4:1 to reflect typical conditions. Given the exothermic nature of CO₂ hydrogenation, a thermal analysis was also performed to estimate heat release and assess the feasibility of thermoneutral operation. This was evaluated over an extended temperature range (200–700 °C) and the same pressures and feed ratios, providing insights into energy efficiency and operational stability.</div><div>Results show that water removal strongly shifts the thermodynamic equilibrium, significantly increasing CO₂ conversion and CH₄ selectivity up to a critical point, beyond which coke formation becomes favorable. The location of this optimum is highly sensitive to temperature and pressure, highlighting the need for strict operational control. Corresponding variations in the reaction heat profile further emphasize these dependencies. Overall, this work offers a detailed thermodynamic perspective on a kinetically complex system, identifies favorable operating windows and highlights process limitations. These findings complement existing literature and provide valuable guidance for the design and optimization of CO₂ methanation technologies.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103226"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145098247","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":"Net-zero sustainable aviation fuel (SAF) production via CO2 hydrogenation in low-temperature Fischer-Tropsch synthesis: Process design and alternatives","authors":"Luis Vaquerizo,&nbsp;Diego Rego-Fernández","doi":"10.1016/j.jcou.2025.103225","DOIUrl":"10.1016/j.jcou.2025.103225","url":null,"abstract":"<div><div>Sustainable Aviation Fuel (SAF) is fundamental for decarbonizing the aviation sector, which remains one of the hardest industries to electrify. Among the available production routes, SAF derived from indirect CO₂ hydrogenation stands out as a promising alternative, delivering drop-in fuels compatible with existing infrastructure. This work presents and compares three thermally self-sufficient process alternatives for SAF production from captured CO₂, green hydrogen, and renewable electricity. The base case follows a conventional configuration consisting of Reverse Water Gas Shift (RWGS), Fischer-Tropsch (FT), hydrocracker, and Auto-Thermal Reformer (ATR) reactors. The first alternative replaces the ATR with two furnaces and substitutes the PSA-based CO₂ separation with an amine absorption unit. It also includes an isomerization bed to reduce SAF’s freezing point, a Dividing Wall Column (DWC) for efficient separation, and a steam turbine to recover part of the plant’s power demand. The second alternative retains the ATR while integrating CO₂ capture, the isomerization bed, and the DWC. The analysis shows that maintaining the ATR reactor reduces hydrogen consumption (0.52 kg H₂ per kg of products in the second alternative), being economically more favorable (3.65 €/L of SAF) than minimizing power consumption (716 kWh per ton of products in the first alternative), given the high cost of electrolytic hydrogen. In addition, the DWC proves to be the most efficient separation option, requiring the lowest reboiler duty and the fewest trays. All process configurations produce water as the only byproduct (approximately 3.3 kg H₂O/kg products), and achieve net-negative greenhouse gas emissions of up to −2 kg CO₂eq per kg of product.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103225"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145098246","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":"Carbonation of recycled concrete aggregate in a fixed-bed reactor: Effects of temperature, initial water saturation degree and particle size","authors":"CORVEC Gaël ,&nbsp;ARTONI Riccardo ,&nbsp;TURCRY Philippe ,&nbsp;AIT-MOKHTAR Abdelkarim ,&nbsp;RICHARD Patrick ,&nbsp;CAZACLIU Bogdan","doi":"10.1016/j.jcou.2025.103286","DOIUrl":"10.1016/j.jcou.2025.103286","url":null,"abstract":"<div><div>Accelerated carbonation of recycled concrete aggregates (RCA) in industrial CO₂-rich environments is a promising technique to enhance CO₂ sequestration while improving RCA properties. This study investigates the influence of temperature (50–110 °C), initial water saturation degree (0.34–0.93), and RCA particle size (0–4 mm) on carbonation efficiency in a fixed-bed reactor under controlled conditions, simulating cement plant flue gases. Results highlight that water saturation degree is a key parameter, as it influences both CO₂ transport in the pore system and the dissolution of reactive phases. Temperature significantly impacts water saturation degree evolution, which in turn affects reaction kinetics. For each initial water saturation degree, an optimal temperature maximizes carbonation, reaching degrees above 40 % after only 2 h carbonation. Particle size also influences carbonation efficiency: finer RCA exhibit higher carbonation rates. A novel Macro-TGA methodology was employed to quantify carbonate formation in 500 g samples, offering a more representative assessment compared to classical thermogravimetric analyses. Finally, water absorption tests before and after carbonation showed a slight reduction, with a maximum decrease of 2.7 % at 80 °C and 0.93 initial water saturation degree. However, no direct correlation between water absorption and carbonation degree was observed, suggesting complex porosity evolution that requires further investigation.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103286"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614769","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":"Gas diffusion electrodes enable enhanced energy efficiency of electrochemical CO2 reduction in natural brine-inspired electrolytes","authors":"Aykut Kas ,&nbsp;Paniz Izadi ,&nbsp;Ida Dinges ,&nbsp;Markus Stöckl ,&nbsp;Falk Harnisch","doi":"10.1016/j.jcou.2025.103268","DOIUrl":"10.1016/j.jcou.2025.103268","url":null,"abstract":"<div><div>A circular economy demands efficient conversion of carbon dioxide (CO₂) into valuable chemicals including C₁-compounds like formate as building blocks for chemical production. The electrochemical CO₂ reduction reaction (eCO₂RR) in aqueous solutions is a promising approach, being limited by low CO₂ solubility that restricts reaction rates and energy efficiency. In this study, we systematically investigated eCO₂RR to formate using gas diffusion electrodes (GDEs) in electrolyte solutions with moderate (3 % w/v), high (10 % w/v), and hypersaline (17 % w/v) NaCl concentrations, representing natural saline water bodies. Notably, the presence of NaCl did not affect eCO₂RR performance showing stable formate production rates of 1.30 ± 0.13 mmol L⁻¹ h⁻¹ cm⁻² at a current density of 50 mA cm⁻² across all salinities. Coulombic efficiencies (<em>CE</em>) for formate were similar across salinities starting at 80–90 % at 30 min and decreasing to ∼70 % after 120 min. Despite an expected ∼50 % decrease in CO₂ solubility with increasing salinity, GDEs ensured efficient CO₂ supply, preventing major performance losses. High salt electrolytes improved performance mainly by increasing electrolytic conductivity; however, benefits may also originate from an alternative anodic reaction, namely the chlorine evolution reaction (CER) instead of the oxygen evolution reaction (OER). At 17 % w/v NaCl, cell voltage decreased by 50.0 % and energy efficiency improved by up to 194.6 % when compared to sodium phosphate buffer, assuming CER was dominant. These findings indicate that the selection of anodic reaction is decisively influencing the energy efficiency of the eCO₂RR in saline electrolytes. Thus, we suggest that saline or brackish water can be sourced as electrolyte solutions for eCO₂RR, offering a path towards large-scale carbon capture and utilization.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103268"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145516678","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":"Efficient valorization of starch-rich food waste for methane recovery: Targeted bioaugmentation of propionate-degrading methanogenic consortia and synergistically regulated metabolic networks","authors":"Lei Feng ,&nbsp;Chenxi Liu ,&nbsp;Kun Zhang ,&nbsp;Yinghuan Kuang ,&nbsp;Jian Kang","doi":"10.1016/j.jcou.2025.103250","DOIUrl":"10.1016/j.jcou.2025.103250","url":null,"abstract":"<div><div>With the acceleration of urbanization and improvement in residents' living standards, how to achieve efficient valorization of food waste has become an important research topic. This study addresses the low methane production efficiency in anaerobic digestion of starch-rich food waste. By employing targeted bioaugmentation with propionate-degrading methanogenic consortia, we constructed a multi-stage metabolic network regulated by “hydrogenotrophic methanogens as primary drivers, acetoclastic methanogens as secondary assistants, and hydrolytic bacteria for synergistic enhancement”. Experimental results demonstrate that the total biogas production reached its peak of 322.29 mL/g VS at a 10 % bioaugmentation dosage, representing a 19 % increase compared to the control group (SK), while methane production reached 107.63 mL/g VS, 1.28 times that of SK. Mechanistic analysis reveals that: (1) The bioaugmented consortium rapidly enriches hydrogenotrophic methanogens (<em>Methanobacterium</em>) and acetoclastic methanogens (<em>Methanosaeta</em>) through “competitive exclusion effects”, establishing dual-pathway synergistic metabolism of CO₂/H₂-to-methane and acetate-to-methane; (2) <em>Syntrophomonadia</em> and <em>Methanobacterium</em> form a hydrogen-acetate cross-feeding relationship: the former oxidizes acetic acid to produce H₂/CO₂, while the latter selectively utilizes low-concentration H₂ to enhance overall metabolic efficiency. This study provides an effective microbial community regulation strategy and engineering references for food waste resource recovery.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103250"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145358948","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":"Bioadhesive design of CO2-based polycarbonate materials with thermosensitivity and biodegradability","authors":"Dake Zhang ,&nbsp;Wenzhen Wang ,&nbsp;Zhen Wang ,&nbsp;Dengmeng Song ,&nbsp;Shuang Liu ,&nbsp;Yuyang Chen ,&nbsp;Xiaoni Ma ,&nbsp;Li Xia","doi":"10.1016/j.jcou.2025.103236","DOIUrl":"10.1016/j.jcou.2025.103236","url":null,"abstract":"<div><div>Addressing the challenges of biotoxicity, poor long-term stability, and inadequate interfacial adhesion that hinder the clinical translation of tissue adhesives, we utilized the biocompatibility and biodegradability of CO₂-derived polycarbonates (PPC) and innovatively incorporated diacetyl-L-tartaric anhydride (DATA) into the copolymerization to develop PPC and DATA alternating/random copolymer (PPCD) bioadhesives. Compared to unmodified PPC, PPCD exhibits significantly enhanced adhesive properties: peel strength increased to 4.7 ± 0.43 N/cm (a 273 % improvement), sealing strength reached 67 ± 2.3 kPa (a 235 % enhancement), and skin adhesion strength rose to 22.1 ± 2.3 kPa (a 203 % increase). In comparative tests, PPCD outperformed commercial Fibrin glue in overall mechanical performance. Furthermore, PPCD demonstrates thermoresponsive viscosity modulation, undergoing debonding at 10°C with a thermal response efficiency exceeding 95 % compared to its viscosity at 37°C. Crucially, PPCD retains the degradability and bioaffinity of the original PPC, as confirmed by cytotoxicity assays showing &gt; 98 % cell viability and histopathological analyses in mice verifying its biosafety. This bioadhesive resolves the long-standing trade-off between mechanical robustness and biocompatibility, while also establishing a new CO₂ valorization strategy for eco-friendly biomedical materials. The functionalization of PPC not only enhances adhesive performance but also pioneers a sustainable pathway for carbon utilization, demonstrating the transformative potential of next-generation tissue repair technologies.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103236"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217711","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":"Hydrogen bond-stabilized mixtures for efficient carbon dioxide capture","authors":"Joaquín Arata Badano ,&nbsp;Giuseppe Ferraro ,&nbsp;Daniele Motta ,&nbsp;Claudia Barolo ,&nbsp;Sergio Bocchini ,&nbsp;Jorge Gustavo Uranga ,&nbsp;Matteo Bonomo","doi":"10.1016/j.jcou.2025.103249","DOIUrl":"10.1016/j.jcou.2025.103249","url":null,"abstract":"<div><div>In this study, we investigate the use of hydrogen bond-stabilized amine-based mixtures (a class of systems hereafter referred to as Hydrogen Bond-Stabilized Mixtures, HBSMs; e.g., n-butylamine with glycerol or guanidinium chloride) as an alternative approach to improve carbon dioxide capture efficiency while avoiding massive solvent evaporation. CO₂ capture experiments reveal that these mixtures exhibit improved sorption capacity compared to pure amines, while the presence of hydrogen bond acceptors plays a crucial role in stabilizing the systems, due to the establishment of an extended hydrogen-bond network. ATR-IR analyses confirm that CO₂ capture occurs through a combination of physical and chemical absorption; on the other hand, TGA data reveal a substantial reduction in solvent evaporation rates, particularly in the n-butylamine/glycerol mixture, where evaporation decreased by more than an order of magnitude compared to pure amine. The high CO₂ absorption capacity and reduced amine volatility of these mixtures open a promising avenue for more sustainable and energy-efficient carbon capture technologies, paving the way for relevant industrial applications.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103249"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321282","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":"Impact of fluctuating temperature and pressure of injected CO2 on adsorption performance in a packed-bed reactor: A CFD-based study","authors":"Ali M. Sefidan,&nbsp;Jari Vepsäläinen","doi":"10.1016/j.jcou.2025.103253","DOIUrl":"10.1016/j.jcou.2025.103253","url":null,"abstract":"<div><div>This study investigates the influence of oscillatory inlet conditions on CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> adsorption performance and energy efficiency in a packed-bed reactor using Computational Fluid Dynamics (CFD) modelling. Baseline operating values of 3 bar and 20 °C were selected as representative conditions, and systematic oscillations in pressure (<span><math><mrow><msub><mrow><mi>A</mi></mrow><mrow><mi>P</mi></mrow></msub><mo>=</mo><mo>±</mo><mspace></mspace><mn>0</mn><mo>.</mo><mn>2</mn></mrow></math></span> to 2 bar) and temperature (<span><math><mrow><msub><mrow><mi>A</mi></mrow><mrow><mi>T</mi></mrow></msub><mo>=</mo><mo>±</mo><mspace></mspace><mn>2</mn></mrow></math></span> to 10 °C) were imposed at frequencies of 0.001 to 0.01 Hz. Three forcing patterns – snusoidal, triangular, and step changes – were considered and compared to steady operation. The results show that pressure oscillations dominate the dynamic adsorption response: large amplitudes (<span><math><mo>±</mo></math></span>2 bar) reduce average CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> uptake by up to 16% and increase specific energy consumption by 18% relative to steady-state. Temperature oscillations alone have negligible impact under the present baseline, as symmetric forcing cancels over each cycle; however, when temperature oscillations are coupled with pressure swings, they significantly affect the cooling energy load. Among waveform types, triangular oscillations achieve the most favourable balance of adsorption performance and energy demand, while step changes lead to the poorest efficiency. Overall, the findings demonstrate that oscillatory injection conditions generally reduce adsorption performance, with pressure fluctuations exerting the strongest influence, underscoring the importance of pressure-stabilizing strategies for efficient CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> capture.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103253"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412419","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 plasma-assisted CO2 methanation on Ru/CeO2 catalysts","authors":"Beatrice Musig ,&nbsp;Jairo Barauna ,&nbsp;Abhijit Roy ,&nbsp;Raul Arenal ,&nbsp;María Elena Gálvez ,&nbsp;Tomás García ,&nbsp;Ramón Murillo ,&nbsp;María Victoria Navarro","doi":"10.1016/j.jcou.2025.103240","DOIUrl":"10.1016/j.jcou.2025.103240","url":null,"abstract":"<div><div>Methanation process utilizes CO₂ as a carbon feedstock for synthesizing energy carriers and value-added chemicals. The combination of methanation with plasma-catalysis has emerged as a promising avenue for the electrification of power-to-gas technologies, representing a significant development in the transition to sustainable energy systems. The present study investigates the impact of low 5 % mol Ru loading on CeO₂, focusing in the role of the metal in comparison to Ni and the metal-support interactions examined using CeO₂ with different structures (nanoneedles, nanopowder) and Ru dispersion within the support. The catalyst Ru/NN with nanoneedles of ceria achieved CO₂ conversion of 70 % and CH₄ selectivity of 99 % at 1CO₂/4H₂, WHSV of 30 L h⁻¹ g_cat-1, 12 kg_CO2 kg_cat-1 h⁻¹ and plasma input power of 8.9 W. The enhanced plasma-catalytic activity of Ru/NN can be attributed to the increased effective H₂ dissociation, beneficial physicochemical and electrical properties attributed to the choice of support and optimal metal-support interaction. The lower dielectric capacitance calculated for this catalyst is the result of reduced charge storage and a faster response to the applied electric field. This produces less intense microdischarges and a more stable and uniform plasma environment.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"102 ","pages":"Article 103240"},"PeriodicalIF":8.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321374","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}