Carbon Capture Science & Technology最新文献

{"title":"Socio-economic implications of deploying COP28 pledged negative emission technologies","authors":"Daniel O. Olasehinde ,&nbsp;Olusola Bamisile ,&nbsp;Caroline Acen ,&nbsp;Chukwuebuka Ejiyi ,&nbsp;Qi Huang ,&nbsp;Sandra Obiora","doi":"10.1016/j.ccst.2026.100590","DOIUrl":"10.1016/j.ccst.2026.100590","url":null,"abstract":"<div><div>Achieving the Paris Agreement’s targets will inevitably impose financial burdens, but choosing the most economically viable path is critical. At COP28, countries pledged to triple renewable energy capacity to 11,000 GW and double energy efficiency gains to 4 % annually by 2030. The agriculture, forestry, and land use (AFOLU) sector also committed to reducing emissions and enhancing carbon dioxide removal (CDR). Using the En-ROADS modeling tool, this study evaluates five global scenarios combining varying degrees of fossil fuel reduction and CDR deployment: Ref (based on current COP28-aligned pledges), Ref++ (Ref with added fossil fuel taxes and carbon pricing), limCDR (Ref++ plus limited deployment of technological CDR up to 50 % of its potential), modCDR (Ref with moderate CDR deployment up to 65 % of potential, but no fossil fuel taxation), and allCDR (Ref with full utilization of technological CDR potential and no fossil fuel taxation). While population growth is held constant across all scenarios, economic outcomes diverge. The Ref scenario fails to meet the 1.5 °C goal and produces the lowest long-term GDP per capita. Ref++ achieves the temperature target but entails sharper near-term fiscal adjustments. modCDR improves macroeconomic performance relative to Ref but does not limit warming below 1.7 °C. allCDR defers mitigation costs through heavy reliance on large-scale removals, reducing early fiscal pressure but increasing long-term dependence on CDR. limCDR emerges as the most balanced pathway that meets the 1.5 °C target while delivering the highest GWP and GDP per capita by 2100, combining phased fossil mitigation with moderate CDR deployment. These findings demonstrate that neither fossil fuel phaseout nor CDR alone is sufficient; a calibrated mix of early mitigation and targeted removals is essential to achieve climate goals while maintaining long-term economic resilience.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100590"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147385193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous electrolytic methanol synthesis from air-captured CO2 at ordinary temperature and pressure","authors":"Yoshiyuki Sakamoto ,&nbsp;Yuna Takeno ,&nbsp;Yusaku F. Nishimura ,&nbsp;Yohsuke Mizutani ,&nbsp;Shintaro Mizuno ,&nbsp;Ryo Hishinuma ,&nbsp;Kazumasa Okamura ,&nbsp;Yasuhiko Takeda ,&nbsp;Tsuyoshi Hamaguchi ,&nbsp;Masaoki Iwasaki","doi":"10.1016/j.ccst.2025.100552","DOIUrl":"10.1016/j.ccst.2025.100552","url":null,"abstract":"<div><div>A system for synthesizing methanol (MeOH) from carbon dioxide (CO₂) in the air as a feedstock using electrical energy was developed to open a new avenue for atmospheric carbon capture and utilization. This system integrates three processes: direct air capture (DAC), direct carbonate reduction (DCR), and MeOH synthesis (MeS). A mixture of potassium carbonate and potassium bicarbonate aqueous solutions captures CO₂ from the air as carbonate ions. Carbonate ions in the solution are directly reduced electrolytically to carbon monoxide (CO) using a nanoporous gold electrocatalyst. The produced CO is subsequently reduced electrolytically to MeOH using a cobalt phthalocyanine/carbon nanotube electrocatalyst. The system operated stably for 1.5 h, showing continuous CO₂ capture and MeOH synthesis. This demonstrates the feasibility of the DAC-DCR-MeS integrated system operating under ordinary temperature and pressure conditions throughout all the steps. A notable feature of no need for high temperature or high pressure makes the system compatible with time-varying renewable energies including solar energy, which are essential for reducing net CO₂ emissions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100552"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145652006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetic model describing the effect of amine loading and temperature on CO2 capture by solid amine adsorbent","authors":"Shun Wang,&nbsp;Mengyin Xie,&nbsp;Shujuan Wang,&nbsp;Yuqun Zhuo","doi":"10.1016/j.ccst.2025.100491","DOIUrl":"10.1016/j.ccst.2025.100491","url":null,"abstract":"<div><div>The increasing CO₂ concentration in atmosphere leads to significant ecological changes, and the control of CO₂ emissions has been a major concern worldwide. Amine-functionalized adsorbents are promising because they have high CO₂ adsorption capacity, moderate adsorption heat and strong water resistance. Adsorption kinetics is a key performance parameter and facilitates the cognizance of microscopic CO₂ adsorption process. A novel kinetic model was proposed, which categorized the amines of solid amine adsorbents into two regions: the open amine region and the closed amine region. Different from the open amine region, CO₂ adsorption by amines in the closed amine region was significantly influenced by diffusion. The model could elucidate the effect of amine loading and temperature on CO₂ adsorption. When amine loading was below the theoretical maximum loading, the CO₂ adsorption capacity and the N efficiency gradually increased with the rise of amine loading. Nevertheless, as the amine loading further increased, the adsorption capacity decreased instead. CO₂ adsorption by solid amines was not affected by external diffusion, but was significantly affected by internal diffusion. The percentage of closed amine region of adsorbents with high amine loading was large, CO₂ needed to diffuse slowly into this region, leading to a small CO₂ adsorption capacity at low temperature. When the amine loading was less than 0.5, the CO₂ adsorption rate stayed almost the same. The model is instructive for the targeted preparation of solid amine adsorbents with fast adsorption rates.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100491"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineered nanoporous sorbents for gaseous fluorocarbons related adsorption applications","authors":"Jian Shen ,&nbsp;Chaoxing Li ,&nbsp;Yongqi Liu ,&nbsp;Mingliang Yang ,&nbsp;Qiongzhi Zhou ,&nbsp;Fei Kang ,&nbsp;Xiaohong Zheng ,&nbsp;He Zhao ,&nbsp;Sandip Sabale ,&nbsp;Deok-kee Kim ,&nbsp;Yiming Li ,&nbsp;Jian Xiong ,&nbsp;Qiangying Zhang ,&nbsp;Yu Zheng","doi":"10.1016/j.ccst.2025.100522","DOIUrl":"10.1016/j.ccst.2025.100522","url":null,"abstract":"<div><div>The utilization or emission of fluorocarbons in varied industries, including fine chemicals development, nonferrous metals smelting, electronics/semiconductors fabrication, and space heating/cooling, is continuously increasing year after year due to society advancement and population expansion, but at the prices of chemicals waste and irreversible environmental issues. Thus, the development of engineered solid sorbents will necessitate the capture, separation, and recycling of fluorocarbons in each scenario. This review initially discusses the sources and techniques required for various fluorocarbons used or emitted in existing industries, followed by a brief introduction to the importances of sorption media. The impacts of sorbents used in fluorocarbon sorption-related applications are reviewed to emphasize the importance of engineered nanoporous sorbents with specific textural/chemical properties to improve sorption-related performance. Furthermore, engineered strategies for sorbent design based on continuous pore-filling mechanisms, including sorbent-fluorocarbons interactions by controlling the strength of acid-base pairs and fluorocarbon-fluorocarbon interactions by tuning pore size/dimension/shape/morphology, are outlined. In addition, systemic experimental and computational characterizations provide insights into structure-performance correlations and corresponding sorption mechanisms. Next, we exemplified perfluorocarbons and refrigerants as typical fluorocarbons to further illustrate the roles of engineered nanoporous sorbents in fluorocarbon sorption performance. Finally, we emphasize the future challenges and opportunities for fluorinated gas purification and reuse with the “Mechanisms—Data” dual-driven conception for engineered nanoporous sorbent development.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100522"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural carbonation in alkali basalts: Geochemical evolution of Ca–Mg–Fe carbonates at Sverrefjellet, Svalbard","authors":"Andrea Pierozzi ,&nbsp;Niamh Faulkner ,&nbsp;Adrienn Maria Szucs ,&nbsp;Luca Terribili ,&nbsp;Melanie Maddin ,&nbsp;Federica Meloni ,&nbsp;Kavya Devkota ,&nbsp;Kristina Petra Zubovic ,&nbsp;Paul C. Guyett ,&nbsp;Juan Diego Rodriguez-Blanco","doi":"10.1016/j.ccst.2025.100510","DOIUrl":"10.1016/j.ccst.2025.100510","url":null,"abstract":"<div><div>This study investigates hydrothermal carbonate cements in Quaternary alkali basalts from the Sverrefjellet volcano (Svalbard), offering insights into in-situ natural mineral carbonation. XRD and SEM-BSE-EDS analyses identify two main morphologies, nodular and banded, composed of solid-solution series between magnesite, calcite, and siderite, with distinct compositional zonation. Nodular cements usually show concentric zoning from Mg-rich cores (Ca_0.05Mg_0.95CO₃) to Ca-enriched rims (Ca_0.40Mg_0.60CO₃), reflecting evolving fluid chemistry. Fe-rich nodules (Ca_0.10Mg_0.50Fe_0.40CO₃) are found near pyrite and display dissolution textures linked to localized redox reactions. Banded cements initiate at the basalt interface as Ca-rich proto-dolomite (Ca_0.65–0.58Mg_0.35–0.42CO₃), transitioning outward to magnesite (Ca_0.10Mg_0.90CO₃) and ferroan magnesite (Ca_0.10Mg_0.50Fe_0.40CO₃). Ca/Mg ratios decrease with distance from the interface (1.81 to 0.13), while Fe/Mg exceeds 13.5 locally due to Fe-rich coatings and inclusions. Four sequential crystallization stages were identified: (1) irregularly laminated Ca-Mg carbonates, (2) oscillatory-zoned dolomite-magnesite, (3) radiaxial-fibrous Ca-bearing magnesite, and (4) Fe-oxide-rich nanocrystalline rinds. Basaltic silicate and glass dissolution (forsterite, enstatite, anorthite) supplied divalent cations. Redox shifts promoted Fe incorporation. Early Ca²⁺ depletion altered fluid chemistry toward Mg²⁺ and Fe²⁺, while oscillatory zoning reflects episodic fluid compositional variations. Pyrite and siderite dissolution imply late-stage oxidation and secondary porosity development. These carbonates are hydrothermal in origin, supported by high-temperature phases, fan-like growth textures, and Ca-to-Mg/Fe transitions, consistent with fluid-rock interaction at 60–220 °C and pH 5.2–6.5. The absence of hydrated carbonates and presence of alteration phases also supports hydrothermal precipitation. Comparisons with engineered systems (e.g., CarbFix) underscore the role of temperature in overcoming kinetic barriers to magnesite formation, though metastable proto-dolomite and Mg sequestration in clays reveal limits to carbonation efficiency. These findings constrain predictive models for CO₂ mineralization in basaltic reservoirs, highlighting the interplay of hydrothermal conditions, fluid evolution, and reaction kinetics.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100510"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uncovering the opportunity space for hybrid CO₂ capture processes: A techno-economic exploration","authors":"Luca Riboldi,&nbsp;Rahul Anantharaman,&nbsp;Donghoi Kim,&nbsp;Rubén M. Montañés,&nbsp;Simon Roussanaly,&nbsp;Sai Gokul Subraveti","doi":"10.1016/j.ccst.2025.100498","DOIUrl":"10.1016/j.ccst.2025.100498","url":null,"abstract":"<div><div>There exists a portfolio of technologies that can be deployed for post-combustion CO₂ capture. Each technology performs optimally at specific conditions, which will hardly coincide with exact industrial applications. Hybrid processes combine two (or more) technologies to perform the CO₂ separation. The goal is to design processes that allow each technology in the hybrid configuration to operate optimally, resulting in cost-effective CO₂ capture solutions. This study explores the feasibility of realizing this potential by mapping the techno-economic potential of selected hybrid processes across a wide spectrum of CO₂ concentrations, plant scales and energy system contexts. The four hybrid processes considered are: vacuum pressure swing adsorption (VPSA)-membrane, membrane-VPSA, VPSA-CO₂ liquefaction and membrane-CO₂ liquefaction. A consistent techno-economic optimization framework is developed to identify the optimal process characteristics and associated minimum cost for each case considered. The performances are compared against those of conventional standalone capture technologies – VPSA, membranes and chemical absorption. Hybrid processes show promising results for medium-to-high CO₂ concentrations (≈13–30 % CO₂), where costs in the range 40–70 €/t_CO2 appear achievable. However, even when different levels of electricity price and emission intensity are considered, chemical absorption and membranes remain the two most cost-efficient processes in most of the cases considered with hybrid processes at least 15 % more expensive. The material properties of membranes and adsorbents proved to have a significant impact on the expected performance. The sensitivity analysis showed how changing material properties assumption within relevant boundaries could modify the relative performance and advance hybrid processes, such as VPSA-membrane, as potentially attractive solutions, with the potential to decrease cost of &gt;10 % at specific industrial conditions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100498"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular insights into the role of kerogen in retention of geologically sequestered CO₂ in shale formations during leakage scenarios","authors":"Zikir A. Kemala ,&nbsp;Manav Kakkanat ,&nbsp;Andrey G. Kalinichev ,&nbsp;Narasimhan Loganathan ,&nbsp;Juliana Zaini ,&nbsp;Malik M. Nauman ,&nbsp;A. Ozgur Yazaydin","doi":"10.1016/j.ccst.2025.100524","DOIUrl":"10.1016/j.ccst.2025.100524","url":null,"abstract":"<div><div>The long-term security of geological CO₂ storage depends not only on the capacity of reservoir rocks to accommodate CO₂ but also on their ability to retain it under leakage scenarios. In this study, molecular dynamics simulations were used to investigate CO₂ behavior in illite-based shale pores with varying organic content and structural configurations. Three representative pore models were examined: a purely mineral illite pore, an illite pore fully packed with Type II-D kerogen, and a wider illite pore partially filled with kerogen. Under reservoir conditions, supercritical CO₂ was injected into each system, followed by a simulated leakage event. The findings reveal that, although pores with greater void volume store more CO₂ initially, their ability to retain it under leakage conditions is markedly lower. In contrast, kerogen-rich systems retain a significantly larger fraction of the adsorbed CO₂, especially in regions where kerogen is in direct contact with mineral surfaces. These results highlight the critical importance of organic content and mineral–organic interfacial structure in controlling CO₂ retention, offering molecular-level insights into the design of more secure geological storage systems.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100524"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovative high temperature heat pump concepts for an economic decarbonization of a carbon capture unit","authors":"Shashank Singh Rawat,&nbsp;Frederico Gomes Fonseca,&nbsp;María Isabel Roldán Serrano","doi":"10.1016/j.ccst.2025.100517","DOIUrl":"10.1016/j.ccst.2025.100517","url":null,"abstract":"<div><div>Achieving global net-zero emissions requires widespread adoption of Carbon Capture Utilization and Storage (CCUS) technologies. However, the current state-of-the-art using amines relies on fossil fuel-based thermal energy for solvent regeneration, offsetting some emission reductions. This study proposes and validates an economically viable decarbonization strategy for carbon capture units. The carbon capture unit is evaluated in isolation, proposing different cases focused on varying levels of decarbonization. The methodology utilizes available process waste heat while reducing dependence on external heat supply. A techno-economic evaluation against the background of Germany, considering both the high electricity-fuel price ratio and fossil-heavy electrical supply to be important deterrents. Using Aspen Plus™, an industrial pilot CC unit was simulated, and a conventional High Temperature Heat Pump (HTHP) solution employing hydrocarbons was integrated, reducing external heat demand by 27 % with minor process modifications. More complex integration systems can achieve total decarbonization of the heat supply, albeit at higher costs. The study also investigates the role of carbon credits as both a cost and revenue source, along with sensitivity analyses on process costs and emissions. The present work introduces a novel approach for economic decarbonization of solvent-based carbon capture units. Minor modifications to the operating pressure in the regeneration column were found to increase heat demand and emissions, but also permitted the use of novel HTHP technologies, resulting in even lower process costs and emissions at high electrification levels. The results offer valuable insights for researchers, technology providers, and policymakers seeking to reduce emissions from emission-intensive industries.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100517"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cooperative enhancement of Ni/Ce-Fe-Mn-Ca dual functional materials for integrated CO2 capture and conversion to CO under near-equimolar H2/CO2 conditions","authors":"Hao Wang ,&nbsp;Lei Liu ,&nbsp;Hanzi Liu ,&nbsp;Xuancan Zhu ,&nbsp;Zhiqiang Sun","doi":"10.1016/j.ccst.2025.100520","DOIUrl":"10.1016/j.ccst.2025.100520","url":null,"abstract":"<div><div>Integrated CO₂ capture and utilization (ICCU) coupled with the reverse water-gas shift reaction offers a promising route to convert captured CO₂ into value-added CO using Ca-based dual functional materials (DFMs), providing an economically viable strategy for reducing CO₂ emissions from energy and industry sources. However, existing Ca-based DMFs typically require a high H₂/CO₂ ratio to achieve efficient catalytic CO generation from adsorbed CO₂. To address this limitation, this study develops a series of Ni and Ce co-modified Fe-Mn-Ca DFMs that enable high CO₂ conversion and CO yield under near-equimolar H₂/CO₂ conditions in a fixed-bed reactor. Results indicate that CaO modified with a Fe/Mn molar ratio of 7:3 exhibits a CO₂ capture capacity of 11.42 mmol <em>g</em>⁻¹ and subsequent CO₂ conversion of 58.7 %. Further modification of this optimized Fe-Mn-Ca material with Ni and Ce cooperative enhancement performance, achieving 61 % CO₂ conversion and 100 % CO selectivity at a H₂/CO₂ ratio of 1:1, with only 18 % decay over 10 consecutive cycles. Mechanistic insights into the cyclic CO₂ adsorption and hydrogenation processes, as well as performance attenuation, were elucidated through material characterization. The effective formation of formate intermediates is responsible for the production of CO from the adsorbed CO₂ under near-equimolar H₂/CO₂ conditions. Finally, comparative performance analysis and enhancement mechanisms are discussed. These findings establish a material foundation for ICCU systems targeting CO production in a serial dual-fluidized bed reactor.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100520"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graphite–Ni synergy unlocks a hydrogen-free pathway for carbon based integrated CO₂ capture and utilisation (ICCU)","authors":"Junhan Lu,&nbsp;Xiaotong Zhao,&nbsp;Jia Hu,&nbsp;Bo Zong,&nbsp;Yuanyuan Wang,&nbsp;Chunfei Wu","doi":"10.1016/j.ccst.2025.100546","DOIUrl":"10.1016/j.ccst.2025.100546","url":null,"abstract":"<div><div>Integrated carbon capture and utilisation (ICCU) is a promising technology to mitigate the impact of carbon emissions, as it combines sorbent regeneration and CO₂ utilisation. ICCU has been intensively studied for reverse water shift reaction (RWGS), methanation and dry methane reforming (DRM). However, ICCU-RWGS and ICCU-Methanation rely on hydrogen, which compromises economic viability and safety, and the complex synthesis of DFMs for ICCU-DRM, requiring promoters or multilayer structures. To enhance the practicality of ICCU technology, here we investigated carbon-based ICCU (C-ICCU), which utilises the reverse Boudouard reaction with carbon as the reducing agent. In this study, we explored the key operational factors influencing C-ICCU performance, specifically Ni loading, the Ni/graphite mass, and temperature. Our findings indicate that Ni/graphite is a highly effective catalyst for the in-situ conversion of CO₂ to CO. Specifically, a Ni loading of 3 wt.% or higher achieved a CO₂ conversion greater than 95% at 650°C. Furthermore, in-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) analysis revealed the synergistic interactions between graphite and nickel. Specifically, graphite promotes CO₂ generation while nickel catalyses its subsequent conversion. Our research demonstrates that the C-ICCU mechanism is a complex synergistic process involving the dynamic evolution of surface species. This work offers a promising, safer, and potentially more economical pathway for industrial carbon capture and utilisation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"17 ","pages":"Article 100546"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145680891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}