Tianyang Zhao, Run Li, Zezhou Zhang, Chunfeng Song
{"title":"Current status of onboard carbon capture and storage (OCCS) system: A survey of technical assessment","authors":"Tianyang Zhao, Run Li, Zezhou Zhang, Chunfeng Song","doi":"10.1016/j.ccst.2025.100402","DOIUrl":"10.1016/j.ccst.2025.100402","url":null,"abstract":"<div><div>As the global greenhouse effect worsens every year, controlling greenhouse gas (GHG) emissions, particularly carbon dioxide (CO<sub>2</sub>), has become a key issue. The shipping industry, as a major component of the transportation industry, has a sizable percentage share in global CO<sub>2</sub> emissions. Further development and improvement of Onboard Carbon Capture and Storage (OCCS) technology is required to realize the mass production of clean ships. This study focuses on the current research status of technologies related to onboard carbon capture systems, while reporting and analysing on-board carbon transport and storage systems. For onboard carbon capture technology, the development and application of different carbon capture technologies in the shipping industry are analysed and the challenges of implementing onboard carbon capture technology are discussed. In the area of onboard carbon transport and storage, a systematic description of how to regulate and realize the concentration and other characteristics of captured CO<sub>2</sub> in pilot and large-scale applications is presented. On the basis of existing research, the current technological bottlenecks and future perspectives of OCCS systems are also presented, based on existing research, with the aim of analysing the solutions for controlling CO<sub>2</sub> emissions from ships and providing perspectives for their sustainable development in the future.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100402"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roshni Patel , Prashandan Varatharajan , Qi Zhang , Ze Li , Sai Gu
{"title":"Catalysts in the water-gas shift reaction: A comparative review of industrial and academic contributions","authors":"Roshni Patel , Prashandan Varatharajan , Qi Zhang , Ze Li , Sai Gu","doi":"10.1016/j.ccst.2025.100388","DOIUrl":"10.1016/j.ccst.2025.100388","url":null,"abstract":"<div><div>Rising energy demand leads to a heavy dependence on fossil fuels and contributes significantly to increasing greenhouse gas emissions. Consequently, alternative solutions to mitigate these pollutants are continually being developed, necessitating a transition to renewable and cleaner energy sources. Hydrogen production via the water-gas shift (WGS) reaction, where CO and water react over a suitable catalyst is an approach. Cu-Zn and Fe-Cr catalysts are used in industry for this reaction at low temperatures (LT) and high temperatures (HT), respectively. Research into applying the WGS reaction in portable devices emphasizes developing catalysts to enhance hydrogen production and overcome the limitations of industrial catalysts, given the reaction's complex mechanism and kinetics. Research on the redox and associative pathways is extensive, and studies on carboxyl and formate mechanisms are ongoing. The intricacy of these mechanisms and kinetics facilitates additional research into reactor design to support process applications, including ammonia and Fischer-Tropsch (FT) synthesis. Numerous commercial catalyst accomplishments are recognized in this review, including the chromium-free HT zinc and the sulphur-tolerant cobalt-molybdenum catalysts. Additionally, research has been done on conventional Cu-Zn and Fe-Cr catalysts in the lab to overcome issues like sintering and chromium toxicity, respectively. Various strategies are examined, including nickel and noble metals catalysts. The formulation and preparation techniques, loading volumes, support modifications, promoter additions, and shape were all examined to observe impacts on CO conversion and hydrogen production.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100388"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"One-step synthesis of epoxy/cyclic carbonate bifunctional polycarbonates with functional groups","authors":"Jie Huang, Boxiong Shen","doi":"10.1016/j.ccst.2025.100400","DOIUrl":"10.1016/j.ccst.2025.100400","url":null,"abstract":"<div><div>The synthesis of functionalized polycarbonates from CO<sub>2</sub> has gained significant attention due to their versatile properties and potential in high-performance applications. A novel trinuclear tetradentate Schiff base chromium complex <strong>1</strong> was designed and synthesized, and combined with bis(triphenylphosphine) imidazolium salt (PPNN<sub>3</sub>) to form a binary catalytic system (complex <strong>1</strong>/PPNN<sub>3</sub>). This system was employed to catalyze the copolymerization of CO<sub>2</sub> with bicyclic epoxide compounds containing both terminal and internal epoxy groups (VCHDEP). Experimental results demonstrate that a bifunctional polycarbonate (PVCH) was efficiently synthesized through a simple one-step process, featuring a polycarbonate cyclohexene ester backbone with side chains containing both epoxy (EP) and cyclic carbonate (CC) groups. The EP/CC ratio can be precisely tuned by varying the reaction temperature and the molar ratio of PPNN<sub>3</sub>, enabling control over polymer properties. Notably, the glass transition temperature (Tg) of PVCH was found to be 164.5 °C, significantly higher than that of conventional polycarbonates synthesized from bisphenol A (154 °C), indicating superior thermal stability and mechanical robustness. The complex <strong>1</strong>/PPNN<sub>3</sub> catalytic system selectively catalyzed the ring-opening copolymerization of epoxides to form the polymer backbone, while retaining unreacted epoxy groups in the side chains. In this catalytic system, the enthalpy change (ΔHₚ<sup>θ</sup>) for the VCHDEP ring-opening polymerization is -20.5 kJ mol<sup>-1</sup>, the entropy change (ΔSₚ<sup>θ</sup>) is -80.3 J mol<sup>-1</sup> K<sup>-1</sup>, the Gibbs free energy change (ΔGₚ<sup>θ</sup>) is 3.5 kJ mol<sup>-1</sup>, and the activation energy (Ea) for PVCH synthesis is 56.8 kJ/mol. Furthermore, hydrolysis and amination reactions were performed on the cyclic carbonate and epoxy groups in PVCH, yielding polycarbonates with hydroxyl, amide, and other functional groups, which further enhance the material's versatility for applications requiring strong adhesion, biocompatibility, and chemical reactivity. This work not only demonstrates a highly efficient and selective catalytic system but also provides a strategy for expanding the application potential of CO<sub>2</sub>-based polycarbonates in advanced materials.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100400"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Su-Ho Ahn , Duckshin Park , Bo-Sang Kim , Su-Min Lee , Mang Muan Lian , Younghee Jang , Kyunghoon Kim , Sangwon Ko , Byung-Hyun Park , Jinsik Choi , Seungkyu Shin , Junpyo Cho , Liguang Wang , Hangil Park , Jung-Ho Yun
{"title":"Accelerated CO2 capture with controllable mineralisation via reactive bubble formation","authors":"Su-Ho Ahn , Duckshin Park , Bo-Sang Kim , Su-Min Lee , Mang Muan Lian , Younghee Jang , Kyunghoon Kim , Sangwon Ko , Byung-Hyun Park , Jinsik Choi , Seungkyu Shin , Junpyo Cho , Liguang Wang , Hangil Park , Jung-Ho Yun","doi":"10.1016/j.ccst.2025.100394","DOIUrl":"10.1016/j.ccst.2025.100394","url":null,"abstract":"<div><div>Carbon Capture and Utilisation (CCU) is crucial for mitigating greenhouse gas emissions from coal-fired power plants. This study presents a bubble reactor system using sodium carbonate (Na<sub>2</sub>CO<sub>3</sub>) and frothing reagents to improve both efficiency and sustainability. Various glycol-based polymers, along with an alcohol-based surfactant widely used in the mining and minerals industry, were evaluated for their effects on carbon dioxide (CO<sub>2</sub>) bubble size and removal efficiency. The results demonstrate that the frothing reagents not only reduced bubble size but also increased foam layer thickness, significantly improving CO<sub>2</sub> removal efficiency. The thicker foam layer associated with the glycol-type polymers generates a larger interfacial area and longer gas residence time, accounting for the differences in CO<sub>2</sub> removal efficiency. Furthermore, after removing CO<sub>2</sub>, the captured CO<sub>2</sub> was mineralised into calcium carbonate (CaCO<sub>3</sub>). Notably, the calcium carbonate existed predominantly in the form of vaterite and the abundance and morphology of vaterite changed with adding one of the polymers into the CO<sub>2</sub>-loaded Na<sub>2</sub>CO<sub>3</sub> solution. This paper underscores the potential for scalable, sustainable CCU, along with the formation of valuable by-products.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100394"},"PeriodicalIF":0.0,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yimeng Luo , Shijian Lu , Ling Liu , Guojun Kang , Fei Yang , Wenju Zhu , Yanhui Ma , Xianzhu Huang , Zhen Chen , Junhua Li
{"title":"Mechanistic study and performance enhancement of CO2 absorption using DEHA as a viscosity modifier in biphasic solvent systems","authors":"Yimeng Luo , Shijian Lu , Ling Liu , Guojun Kang , Fei Yang , Wenju Zhu , Yanhui Ma , Xianzhu Huang , Zhen Chen , Junhua Li","doi":"10.1016/j.ccst.2025.100392","DOIUrl":"10.1016/j.ccst.2025.100392","url":null,"abstract":"<div><div>Biphasic absorbents have garnered increasing attention in CO<sub>2</sub> capture due to their potential for reducing energy consumption. However, the high viscosity of the CO<sub>2</sub>-rich phase after phase separation often leads to challenges such as increased flow resistance, reduced heat transfer efficiency, and instability of phase separation. To address these issues, this study proposes a novel phase-change capture system comprising AEEA-DEHA-H<sub>2</sub>O (AEEA: 2-(2-aminoethylamino)ethanol, DEHA: N, N-diethylhydroxylamine). The experimental results revealed that a biphasic absorbent composed of 30wt% AEEA, 40wt% DEHA, and 30wt% H<sub>2</sub>O achieved an absorption capacity of 0.93 mol CO<sub>2</sub>·mol⁻¹ amine, with a desorption efficiency of 75.3 % at 110 °C and a viscosity of 58 mPa·s after saturation at 40 °C. The energy consumption of this system was 20.5 % lower than that of the conventional MEA solvent. Quantum chemical calculations indicated that the hydroxyl group in the DEHA structure was directly bonded to the nitrogen atom, which enhanced the hydrophilicity of the system. This structural feature allowed DEHA molecules to form strong hydrogen bonds with water, thereby increasing their water solubility and reducing the viscosity of the system. Furthermore, the strong affinity of AEEA-derived products for other CO<sub>2</sub> capture products and H<sub>2</sub>O resulted in their aggregation into a CO<sub>2</sub>-rich phase. In contrast, the relatively low polarity of DEHA led to a weaker affinity for AEEA-derived products, allowing DEHA to separate from the solution and form a CO<sub>2</sub>-lean phase.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100392"},"PeriodicalIF":0.0,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adam Sjolund , Olivia Andrea Wrenn , Amy Tattershall , Thomas Sasser , Lisa A. Thompson , Jennifer Wade
{"title":"A study of ex-situ carbon mineralization under low intensity aqueous reaction","authors":"Adam Sjolund , Olivia Andrea Wrenn , Amy Tattershall , Thomas Sasser , Lisa A. Thompson , Jennifer Wade","doi":"10.1016/j.ccst.2025.100391","DOIUrl":"10.1016/j.ccst.2025.100391","url":null,"abstract":"<div><div>Safe, scalable and permanent options for carbon dioxide storage is essential to achieve net negative greenhouse gas emissions and limit catastrophic global warming. A benign and thermodynamically stable form of CO<sub>2</sub> storage is a carbonate mineral. This work examined ex situ carbon mineralization of magnesium rich ultramafic and mafic rocks under previously unstudied low intensity aqueous reaction conditions (<em>T</em> = 25 °C, PCO<sub>2</sub> = 80 kPa, pH = 7). Carbonate reaction extents, dissolved metals and formed carbonate phases were evaluated in experiments ranging from days to months using thermogravimetric and evolved gas analysis, dissolved elemental analysis, BET surface area, and semi-quantitative powder x-ray diffraction methods. Reaction kinetics were similar across both mineral types, with 12 % reaction extent achieved in under ten weeks. After 160 days of low intensity reaction, the ultramafic xenolith trapped 9 ± 2 wt% CO<sub>2</sub>. After 64 days of reaction, a scoriaceous picrite basalt trapped 7 ± 3 wt% CO<sub>2.</sub> Primarily amorphous magnesium carbonate was formed, with partial conversion to magnesite upon oven drying. The CO<sub>2</sub> mineralization of abundant surface rocks under mild conditions offer potential for alternative mineralization strategies for permanent negative CO<sub>2</sub> emissions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100391"},"PeriodicalIF":0.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Huang , W. Liu , Y.X. Zhang , X.J. Zhang , T. Wang , M.X. Fang , Y.L. Yao , X. Zheng , X.Y. Liu , L. Jiang
{"title":"Post-combustion absorption carbon capture assisted by sorption-compression cascade heat pump","authors":"Y. Huang , W. Liu , Y.X. Zhang , X.J. Zhang , T. Wang , M.X. Fang , Y.L. Yao , X. Zheng , X.Y. Liu , L. Jiang","doi":"10.1016/j.ccst.2025.100393","DOIUrl":"10.1016/j.ccst.2025.100393","url":null,"abstract":"<div><div>The application of heat pumps in carbon capture systems is crucial for post-combustion carbon capture in power plants. However, existing heat pump and carbon capture coupling schemes face issues such as excessive electricity consumption or low waste heat recovery efficiency. Therefore, energy-saving processes are equally indispensable for reducing the energy consumption of carbon capture. A novel cascade heat pump, that is composed of absorption heat pump and lean vapor recompression, is initially proposed for amine-scrubbing capture system. Based on different waste heat utilization and heat pumps, various energy-saving processes are evaluated based on an absorption carbon capture system for a 660 MW coal-fired power plant. The results indicate that the cascade heat pump type is conducive to reducing energy consumption, while the single-stage type results in lower power efficiency loss. At a 90 % carbon recovery rate, the optimal unit energy consumption of the capture system is 2.23 GJ/t<sub>CO2</sub>, which is achieved by cascade heat pump coupling with additional steam extraction for generator at flash pressure of 40 kPa. The minimum efficiency loss of power plant is 7.5 % by using lean vapor recompression with waste heat utilization in reboiler and flash drum at flash pressure of 80 kPa and 100 kPa. The maximum net CO<sub>2</sub> recovery rate of 73.48 % is achieved by using lean vapor recompression with waste heat utilization in reboiler and flash drum at flash pressure of 80 kPa. The comparative results pose a great potential considering the cascade heat pump for power plant in the future.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100393"},"PeriodicalIF":0.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Raquel V. Barrulas , Rodrigo M. Barão , Carlos E.S. Bernardes , Marcileia Zanatta , Marta C. Corvo
{"title":"Mechanistic insights on ionic liquid and poly(ionic liquid) solutions for CO2 capture and cycloaddition reactions","authors":"Raquel V. Barrulas , Rodrigo M. Barão , Carlos E.S. Bernardes , Marcileia Zanatta , Marta C. Corvo","doi":"10.1016/j.ccst.2025.100390","DOIUrl":"10.1016/j.ccst.2025.100390","url":null,"abstract":"<div><div>This study explores the potential of ionic liquids (ILs) and poly(ionic liquid)s (PILs) for CO<sub>2</sub> capture and conversion. Using molecular dynamics simulations in DMSO solutions, we found that ILs and PILs exhibit similar CO<sub>2</sub> sorption, with the ILs [BMIM][OAc] and [P<sub>4,4,4,4</sub>][OAc] showing the highest capacities. Bromide-derived PILs enhance aqueous sorption through cage formation, unlike ILs. We also examined the catalytic efficiency of PILs P[VBA]Cl and P[VBP]Cl, and IL [BA]Cl in CO<sub>2</sub> cycloaddition reactions. DMSO decreases IL catalytic activity but improves P[VBA]Cl's performance. These findings suggest that higher CO<sub>2</sub> sorption in ILs does not always correlate with better catalytic results. In conclusion, IL and PIL solutions in DMSO demonstrate significant potential for the effective modulation of material properties.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100390"},"PeriodicalIF":0.0,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How do CaO/CuO materials evolve in integrated calcium and chemical looping cycles?","authors":"Yaoyao Zheng , Stuart A. Scott","doi":"10.1016/j.ccst.2025.100389","DOIUrl":"10.1016/j.ccst.2025.100389","url":null,"abstract":"<div><div>Maintaining high CO<sub>2</sub> uptake is critical for combined Ca-Cu looping applications, however, the long-term behaviour of combined Ca and Cu materials under repeated cycling conditions remains less understood. This study examined three materials with a fixed Cu/Ca mole ratio of 1.6 to analyse the material phase evolution and identify factors influencing CO<sub>2</sub> uptake. The materials underwent 50 TGA cycles in two distinct looping applications: blast furnace gas (BFG) cycling (reduction-carbonation-oxidation) and flue gas cycling (carbonation-reduction-oxidation).</div><div>Different preparation methods significantly affected the initial phase distribution. The multi-grain precipitate material (MGP), prepared to minimise the chemical contact between Ca and Cu, primarily contained separate CaO and CuO phases; while the multi-stage mechanically mixed materials (MM1 and MM2), in which there was extensive contact between the Ca and Cu, exhibited mixed Ca-Cu-O phases along with separate CuO. However, the initial phase distribution had little influence on the longer-term CO<sub>2</sub> uptake with the accessibility of CaO and cycling conditions having a more significant impact. BFG cycling consistently resulted 70–100; % greater CO<sub>2</sub> uptake than flue gas cycling, highlighting the strong influence of cycling conditions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"15 ","pages":"Article 100389"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}