Carbon Capture Science & Technology最新文献

{"title":"Techno-economic assessment of waste heat-powered direct air capture in the refinery and petrochemical sectors in Saudi Arabia","authors":"Naser Odeh ,&nbsp;Raphael W. Apeaning ,&nbsp;Feras Rowaihy","doi":"10.1016/j.ccst.2025.100451","DOIUrl":"10.1016/j.ccst.2025.100451","url":null,"abstract":"<div><div>Direct Air Capture (DAC) is increasingly recognized as a critical technology for achieving net-zero emissions, yet its large-scale deployment remains constrained by high energy and operational costs—particularly the need for reliable low-cost source of heat. This study presents a comprehensive technical and economic assessment of integrating DAC with low-grade industrial waste heat across Saudi Arabia’s refinery and petrochemical sectors. Using facility-level data, we estimate that approximately 84 TWh/year of waste heat is available—sufficient to support the capture of up to 42 MtCO₂ annually, offsetting around 34 % of current stationary emissions from these sectors. Our analysis shows that repurposing this underutilized thermal energy could reduce the average levelized cost of DAC (LCOD) for future commercial-scale systems to $148.5 per ton, significantly below current global DAC cost benchmarks. A marginal abatement cost curve reveals that the most cost-effective opportunities are concentrated in large, high-throughput industrial sites, emphasizing the importance of scale, centralized integration, and waste heat clustering. Further, our sensitivity analysis highlights the scale-up exponent, electricity price, and capital cost assumptions as the most influential factors driving cost outcomes. Overall, this study offers a scalable and actionable blueprint for DAC deployment in high-emitting industrial sectors and aligns closely with Saudi Arabia’s Circular Carbon Economy framework and 2060 net-zero target.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"16 ","pages":"Article 100451"},"PeriodicalIF":0.0,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306283","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":"A Highly Efficient Pt/TiO2-NaY-x Catalyst for RWGS reaction: Enhancement Effect of Adsorbent NaY-x on CO2 Hydrogenation Conversion","authors":"Qiuming Zhou ,&nbsp;Shuaishuai Lyu ,&nbsp;Hongwei Li ,&nbsp;Congcong Niu ,&nbsp;Rongjun Zhang ,&nbsp;Chaopeng Hou ,&nbsp;Binhang Yan ,&nbsp;Sen Wang ,&nbsp;Bo Peng ,&nbsp;Run Xu ,&nbsp;Mingfeng Li","doi":"10.1016/j.ccst.2025.100452","DOIUrl":"10.1016/j.ccst.2025.100452","url":null,"abstract":"<div><div>Selective removal of H₂O <em>in-situ</em> from the reverse water gas shift (RWGS) reaction system is an effective approach to intensify the CO₂ conversion dictated by thermodynamics. Here, a composite material is prepared by combining a water adsorbent zeolite NaY-2 which modified by hydrothermal treatment at 500°C with Pt/TiO₂ catalyst. The synthesized Pt/TiO₂-NaY-2 exhibits much higher activity and CO selectivity than conventional Pt/TiO₂. It shows the highest CO₂ conversion of 42.3% and consistently exceeds the corresponding thermodynamic equilibrium conversion (28.6%) over 120 h on stream with 100% CO selectivity at 340°C. The persistent catalytic enhancement is mainly attributed to the well aligning between the desorption temperature of H₂O on NaY-2 (270°C, 330°C) and the reaction temperature. The introduced NaY-2 demonstrates an electronic effect on Pt/TiO₂ during the reduction process and generates an electron-rich Pt species. The created Pt^δ− sites on Pt/TiO₂-NaY-2 possess higher intrinsic catalytic activity than Pt⁰ sites on Pt/TiO₂. The interaction also reduces Pt average particle size and thus weakens the adsorption of CO on Pt, which inhibits the methanation side reaction then improves the CO selectivity on Pt/TiO₂-NaY-2. The RWGS reactions on the synthesized Pt-based catalysts proceed through intermediate decomposition mechanism exposed by <em>in-situ</em> IR spectroscopy. The findings of this work provide information of high interest to guide future research on RWGS reaction intensified process via <em>in-situ</em> removal of H₂O.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"16 ","pages":"Article 100452"},"PeriodicalIF":0.0,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144469913","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":"Emerging carbon capture applications of aerogels in the oil and gas sector: A review of current trends and future prospects","authors":"Abeer․ A Alarawi ,&nbsp;Rima T․ Alfaraj ,&nbsp;Tawfik․ A Saleh ,&nbsp;Almohannad A․ Alghamdi","doi":"10.1016/j.ccst.2025.100435","DOIUrl":"10.1016/j.ccst.2025.100435","url":null,"abstract":"<div><div>Over the past three decades, the alarming surge in carbon dioxide (CO₂) emissions, estimated at between 330 and 350 gigatons annually, has sparked global concerns. This rapid increase, driven by industrial expansion, fossil fuel dependence, and deforestation, highlights the pressing need for scalable and economically viable carbon sequestration methods. With their unique properties, such as high porosity and surface area, aerogels have emerged as a beacon of hope for industrial CO₂ capture. However, their practical applications are hindered by challenges such as mechanical fragility and high production costs.</div><div>This literature review elucidates the environmental effects, economic viability, life cycle assessments, current trends, and future possibilities of aerogels used in CO₂ capture, particularly in the oil and gas industry, where their potential is significant. We demonstrate the existing methods for capturing and storing CO₂ within the sector. Additionally, we thoroughly analyze CO₂ capture performance using various adsorbents, including amines, metal-organic frameworks, carbon, zeolites, and aerogel-based options. This analysis considers factors such as CO₂ absorption capacity, energy required for regeneration, durability, economic feasibility, environmental implications, life cycle assessments, and distinct advantages. Moreover, we explore enhancements in aerogel fabrication methods, emphasizing large-scale affordability, cost-effectiveness, economic viability, and their respective advantages and disadvantages. We also provide an in-depth evaluation of different types of aerogels, highlighting their specific strengths and capabilities for CO₂ capture. We also present the results of integrating materials science, industrial engineering, and carbon mitigation policy by presenting various surface modification and integration techniques applied to aerogels to enhance their stability and effectiveness for CO₂ capture applications. Our analytical approach encompasses a techno-economic feasibility study and cost reduction strategies within key market sectors.</div><div>As the energy industry moves towards achieving net-zero emissions, we thoroughly assess the broad applications of aerogels in this field. We summarize existing case studies and ongoing research efforts focused on developing aerogels for large-scale CO₂ capture. Finally, we evaluate current challenges, environmental impacts, and economic considerations, offering a comprehensive outlook filled with the potential to enhance the use of aerogels in CO₂ capture and fostering optimism regarding the energy industry's future.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100435"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204311","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":"Outside Back Cover","authors":"","doi":"10.1016/S2772-6568(25)00096-X","DOIUrl":"10.1016/S2772-6568(25)00096-X","url":null,"abstract":"","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100457"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263008","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":"Highly efficient CO2 electroreduction to formate using Bismuth nanodots within ZIF-8 scaffold","authors":"Muhammad Usman ,&nbsp;Munzir H. Suliman ,&nbsp;Maryam Abdinejad ,&nbsp;Jesse Kok ,&nbsp;Hussain Al Naji ,&nbsp;Aasif Helal ,&nbsp;Zain H. Yamani ,&nbsp;Gabriele Centi","doi":"10.1016/j.ccst.2025.100450","DOIUrl":"10.1016/j.ccst.2025.100450","url":null,"abstract":"<div><div>Zeolitic imidazolate frameworks (ZIFs) based electrocatalysts for CO₂ reduction offer unique possibilities for developing advanced materials for this reaction due to their ordered nanoporosity and pore environments, tunable characteristics and high affinity for CO₂. Still, they were not investigated sufficiently. In this study, we developed a Bismuth nanodots embedded Zeolitic Imidazolate Framework-8 (BND-ZIF-8) electrocatalyst via a one-pot synthesis method for the electrochemical CO₂ reduction reaction (eCO₂RR). Comprehensive spectroscopic and electrochemical characterization confirmed the successful integration of Bismuth into the ZIF-8 matrix. The electrocatalytic performance of the BND-ZIF-8 was assessed in multiple reactor typologies such as H-cell, flow cell, and membrane electrode assembly (MEA) setups. Remarkable differences in the performances in the three cell configurations are evidenced. Notably, the MEA configuration exhibited a marked enhancement in formate selectivity, achieving a Faradic efficiency (FE) of up to 91 % at a current density of −150 mA cm^‒². This work underscores the potential of Bi-ZIF-8 in advancing eCO₂RR while remarking on the crucial importance of the appropriate type of electrocatalytic experiments in assessing the material performance.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"16 ","pages":"Article 100450"},"PeriodicalIF":0.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222916","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":"Electrochemical mineral carbonation: A sustainable approach to CO₂ capture and utilization","authors":"Junhyeok Choi ,&nbsp;Seongeom Jeong ,&nbsp;Semi Jang ,&nbsp;Chanhyuk Park ,&nbsp;Sanghyun Jeong ,&nbsp;Sungju IM","doi":"10.1016/j.ccst.2025.100444","DOIUrl":"10.1016/j.ccst.2025.100444","url":null,"abstract":"<div><div>Mineral carbonation for CO₂ capture and utilization often requires high temperatures and pressures, necessitating alternative approaches. Electrochemical carbon capture has emerged as a promising technology due to its high efficiency and selectivity. However, its high capital expenditure (CAPEX) remains a challenge. In this study, carbon cloth (CC) electrodes were evaluated for their potential to enhance carbon capture, mineralization, and hydrogen production. The stability of conductive CC was confirmed as a substitute electrode under strong acidic and basic conditions, maintaining consistent contact angle and surface resistance. CC-based electrodes facilitated carbonate formation by inducing pH shifts through applied currents, achieving mineralization and hydrogen production efficiencies comparable to conventional methods. Furthermore, CC-based electrochemical systems demonstrated reduced environmental impacts, including lower global warming potential, toxicity, and eutrophication. These finding highlight the potential of CC-based electrodes as a cost-effective and sustainable alternative for electrochemical carbon capture, contributing to climate change mitigation and sustainable development.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"16 ","pages":"Article 100444"},"PeriodicalIF":0.0,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230575","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":"SAGE-Amine: Generative Amine design with multi-property optimization for efficient CO2 capture","authors":"Hocheol Lim ,&nbsp;Hyein Cho ,&nbsp;Jeonghoon Kim ,&nbsp;Kyoung Tai No","doi":"10.1016/j.ccst.2025.100447","DOIUrl":"10.1016/j.ccst.2025.100447","url":null,"abstract":"<div><div>Efficient CO₂ capture is vital for mitigating climate change, with amine-based solvents being widely used due to their strong reactivity with CO₂. However, optimizing key properties such as basicity, viscosity, and absorption capacity remains challenging, as traditional methods rely on labor-intensive experimentation and predefined chemical databases, limiting the exploration of novel solutions. Here, SAGE-Amine was introduced, a generative modeling approach that integrates Scoring-Assisted Generative Exploration (SAGE) with quantitative structure-property relationship models to design new amines tailored for CO₂ capture. Unlike conventional virtual screening restricted to existing compounds, SAGE-Amine generates novel amines by leveraging autoregressive natural language processing models trained on amine datasets. SAGE-Amine identified known amines for CO₂ capture from scratch and successfully performed single-property optimization, increasing basicity or reducing viscosity or vapor pressure. Furthermore, it facilitated multi-property optimization, simultaneously achieving high basicity with low viscosity and vapor pressure. The 10 top-ranked amines were suggested using SAGE-Amine and their thermodynamic properties were further assessed using COSMO-RS simulations, confirming their potential for CO₂ capture. These results highlight the potential of generative modeling in accelerating the discovery of amine solvents and expanding the possibilities for industrial CO₂ capture applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"16 ","pages":"Article 100447"},"PeriodicalIF":0.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190497","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":"Unraveling the coupling effect of micropore confinement and functional sites of carbon-based adsorbents on flue gas CO2 adsorption: A machine learning study based on multi-scale simulations","authors":"Jiayu Zuo ,&nbsp;Fei Sun ,&nbsp;Zhibin Qu ,&nbsp;Chaowei Yang ,&nbsp;Liang Xie ,&nbsp;Yi Zhang ,&nbsp;Xuhan Li ,&nbsp;Junfeng Li","doi":"10.1016/j.ccst.2025.100445","DOIUrl":"10.1016/j.ccst.2025.100445","url":null,"abstract":"<div><div>Carbon material is a type of promising adsorbent for flue gas CO₂ capture, where micropore and dopants are key functional units and intertwined with each other. Due to the difficulty in detaching micropore and functional sites, their effects on CO₂ adsorption are still in debate. Herein, we unravel coupling effects of micropore confinement and functional sites combining machine learning (ML) and multi-scale simulations. High-throughput Grand Canonical Monte Carlo (GCMC) simulations in combination with density functional theory (DFT) calculations clarify that CO₂ adsorption mechanism under pore-dopant coupling is dependant on both micropore confinement environment and interaction type of CO₂ with functional sites. For basic dopants owning chemical interactions with CO₂, adsorption potential driven by Lewis acid-base interactions dominate CO₂ adsorption behavior and the optimal pore size is distributed at 7 Å. For dopants that predominantly adsorb CO₂ by physisorption interaction, steric effect becomes a key factor influencing CO₂ adsorption behavior, which will result in a shift in optimal pore size for CO₂ adsorption from 7 to 8-10 Å and alter adsorption selectivity. In this case, new descriptor free volume (<em>V_f</em>) was identified to describe coupling effects of micropore and functional sites. Guided by theoretical findings, we prepare carbon adsorbent with both heteroatom dopants and enlarged pore size, which exhibits leading-level CO₂ adsorption capacity of 4 mmol g⁻¹ at ambient condition, 130% higher than that without pore size optimization. This work demonstrates crucial role of micropore-dopant coupling mode on CO₂ adsorption, and provides new direction of developing high-performance carbon adsorbent beyond traditional standalone pore or doping engineering.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"16 ","pages":"Article 100445"},"PeriodicalIF":0.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178441","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":"Optimisation of reaction temperature during carboxylation of single and mixed model bio-derived phenolics as effective route for CO2 utilisation","authors":"Omar Mohammad ,&nbsp;Jude A. Onwudili ,&nbsp;Qingchun Yuan ,&nbsp;Robert Evans","doi":"10.1016/j.ccst.2025.100442","DOIUrl":"10.1016/j.ccst.2025.100442","url":null,"abstract":"<div><div>This study investigates the temperature-dependent carboxylation of single and mixed biomass-derived phenolic sodium salts with CO₂ via the Kolbe–Schmitt reaction. Reactions were performed at <em>T</em> = 175–225 °C, <em>t</em> = 2 h, and pCO₂ = 30 bar. Five model phenolics; phenol, 2-cresol, guaiacol, catechol, and syringol were examined individually and in mixtures. Characterisation via high-performance liquid chromatography (HPLC) and nuclear magnetic resonance (NMR) analysis showed that 2-hydroxybenzoic and dicarboxylic acids were favoured at higher temperatures, while 4-hydroxybenzoic acids prevailed at 175 °C. In mixtures, dicarboxylic acid yields increased significantly, reaching 41.9 % for 2,3-dihydroxyterephthalic acid and 20.5 % for 2-hydroxyisophthalic acid. These dicarboxylic acids possess up to 10-fold higher market value than their monocarboxylic counterparts. Syringic acid synthesis via Kolbe–Schmitt is reported here for the first time, with yields rising to 33.0 % in mixtures versus &lt;2.0 % molar yield when reacted individually. The study also presents the first detailed mechanistic explanation of Brønsted acid–base interactions and temperature-driven selectivity in phenolic salt carboxylation. While previous research suggested that producing phenolics solely from lignin was not viable, this work demonstrates that CO₂ incorporation not only enhances product value but also narrows product distribution and enables broader industrial applicability - ultimately opening new opportunities for potential large-scale, economically viable CO₂ utilisation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100442"},"PeriodicalIF":0.0,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167195","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":"In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture","authors":"Shijian Lu ,&nbsp;Yanyang Xue ,&nbsp;Fanpeng Meng ,&nbsp;Miaomiao Liu ,&nbsp;Ting Hou ,&nbsp;Yimeng Luo ,&nbsp;Ling Liu ,&nbsp;Yongsheng An ,&nbsp;Guojun Kang ,&nbsp;Xingdian Wu","doi":"10.1016/j.ccst.2025.100433","DOIUrl":"10.1016/j.ccst.2025.100433","url":null,"abstract":"<div><div>Techniques for capturing CO₂ based on traditional amine-based approaches face technical barriers of kinetic limitations and high energy requirements for solvent regeneration. Metal-molecular sieve composites are promising solid acid catalysts (SACs). In this paper, we report a one-step synthesis and preparation of Fe-MOR catalysts by introducing iron into the framework of mullite (MOR) zeolite molecular sieves via a simple and facile in-situ synthesis method, overcoming the uncontrolled metal distribution and instability generated by the production of such SAC catalyst via conventional methods such as loading or ion exchange and further enhancing their pore structure regulation and acidic structure. The catalysts were also applied to the catalytic desorption of CO₂ from a 30wt % MEA aqueous solution, and the CO₂ desorption rate and desorption capacity were increased by 46 % and 5 %, respectively, and the relative regeneration heat load was reduced by 17.4 % compared with the non-catalytic system when the molar ratio of Fe to Si was 2 %. In addition, the mechanism of Fe-MOR to improve the CO₂ capture performance was also discussed, and Fe doping helped increase both the activity of the acidic sites and the number of acidic sites.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100433"},"PeriodicalIF":0.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116643","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}