Carbon Capture Science & Technology最新文献

筛选
英文 中文
Physics-based and data-driven hybrid modelling and optimisation of stirred-slurry reactors for CO2 capture via enhanced weathering of dolomite mineral
Carbon Capture Science & Technology Pub Date : 2025-01-12 DOI: 10.1016/j.ccst.2025.100363
Yalun Zhao , Mingliang Wang , Jin Xuan , Dengao Chang , Ziming Li , Shiyu Wang , Yun Ou , Xu Wang , Lei Xing
{"title":"Physics-based and data-driven hybrid modelling and optimisation of stirred-slurry reactors for CO2 capture via enhanced weathering of dolomite mineral","authors":"Yalun Zhao ,&nbsp;Mingliang Wang ,&nbsp;Jin Xuan ,&nbsp;Dengao Chang ,&nbsp;Ziming Li ,&nbsp;Shiyu Wang ,&nbsp;Yun Ou ,&nbsp;Xu Wang ,&nbsp;Lei Xing","doi":"10.1016/j.ccst.2025.100363","DOIUrl":"10.1016/j.ccst.2025.100363","url":null,"abstract":"<div><div>The natural enhanced weathering (EW) must be significantly accelerated by optimizing the local triple-phase environment prior to practical large-scale carbon dioxide removal (CDR). The implementation of stirred-slurry reactor (SSR) for enhancing mass transport and reaction rates of the EW-based CO<sub>2</sub> capture process has not yet been reported. We conducted a hybrid modelling approach, in which mechanistic and data-driven models are integrated, for the scaled-up batch SSRs designed for EW-based CO<sub>2</sub> capture. It is revealed that CO<sub>2</sub> mass transport into the aqueous phase has significant impact on the overall capture performance. The scaled-up batch system is found to perform comparably to the continuous system in terms of CO<sub>2</sub> capture rate, energy and water consumption. The energy consumption for gas enrichment in the batch system is expected to be less than 50% of that in continuous systems. Multi-objective optimisation reveals the efficacy and accuracy of the hybrid modeling within low energy consumption ranges.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100363"},"PeriodicalIF":0.0,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100117","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}
引用次数: 0
Covalent organic frameworks (COFs) for CO2 utilizations
Carbon Capture Science & Technology Pub Date : 2025-01-11 DOI: 10.1016/j.ccst.2025.100365
Maha H. Alenazi , Aasif Helal , Mohd Yusuf Khan , Amjad Khalil , Abuzar Khan , Muhammad Usman , Md. Hasan Zahir
{"title":"Covalent organic frameworks (COFs) for CO2 utilizations","authors":"Maha H. Alenazi ,&nbsp;Aasif Helal ,&nbsp;Mohd Yusuf Khan ,&nbsp;Amjad Khalil ,&nbsp;Abuzar Khan ,&nbsp;Muhammad Usman ,&nbsp;Md. Hasan Zahir","doi":"10.1016/j.ccst.2025.100365","DOIUrl":"10.1016/j.ccst.2025.100365","url":null,"abstract":"<div><div>The levels of greenhouse gases, and in particular, carbon dioxide (CO<sub>2</sub>) emissions due to anthropogenic activities, have greatly inflated, and this has contributed to climate fluctuation and global warming. In 2023, the CO<sub>2</sub> emissions went up by 1.1 % to arrive at a figure of 37.4 g/t. There is now a good prospect of converting CO<sub>2</sub> into other products, thanks to the active research into the use of COFs for CO<sub>2</sub> capture and conversion. COFs as a new class of porous crystalline materials are synthesized by organic units linked like benzene and triazine, sanines, and porphyrines. Production procedures may result in COFs impurities, therefore, an activation paragraph is required to outweigh the deficiency and improve the efficiency of the COFs. Even though it is difficult to achieve these characteristics in humid conditions where temperature and pressure are in the normal operating conditions of COFs, their low density, highly porous surface areas, large pore volume, and adjustable pore size, all vice versa are effective in carbon capture. This review focuses on the fact that COFs' structural properties are vital to the success of the CO<sub>2</sub> capture and storage processes. It also assesses the possibility of creating cyclic carbonates or other organic compounds to solve environmental issues effectively.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100365"},"PeriodicalIF":0.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100166","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}
引用次数: 0
Quantitative modeling and assessment of CO2 storage in saline aquifers: A case study in Switzerland
Carbon Capture Science & Technology Pub Date : 2025-01-10 DOI: 10.1016/j.ccst.2024.100360
Thanushika Gunatilake , Alba Zappone , Yingqi Zhang , Dominik Zbinden , Marco Mazzotti , Stefan Wiemer
{"title":"Quantitative modeling and assessment of CO2 storage in saline aquifers: A case study in Switzerland","authors":"Thanushika Gunatilake ,&nbsp;Alba Zappone ,&nbsp;Yingqi Zhang ,&nbsp;Dominik Zbinden ,&nbsp;Marco Mazzotti ,&nbsp;Stefan Wiemer","doi":"10.1016/j.ccst.2024.100360","DOIUrl":"10.1016/j.ccst.2024.100360","url":null,"abstract":"<div><div>The global temperature rise necessitates urgent action to reduce greenhouse gas emissions, with Geological Carbon Storage (GCS) emerging as a promising strategy. GCS involves injecting CO<span><math><msub><mrow></mrow><mn>2</mn></msub></math></span> into deep geological formations, particularly saline aquifers. However, ideal reservoir conditions, such as stable caprock and adequate storage capacity, are rare in regions like Switzerland. This study assesses the CO<span><math><msub><mrow></mrow><mn>2</mn></msub></math></span> storage potential in the saline aquifer at Triemli, Switzerland, aiming to explore the feasibility of decentralized, small to medium-scale storage with multiple injection points in geologically unfavorable areas. Through numerical simulations, we investigate CO<span><math><msub><mrow></mrow><mn>2</mn></msub></math></span> injection, migration, and long-term reservoir stability, bridging the gap between theoretical estimates and practical feasibility. Our findings highlight the potential of deep saline aquifers in the Swiss Molasse Basin and Folded Jura for CO<span><math><msub><mrow></mrow><mn>2</mn></msub></math></span> storage, with the study area capable of storing approximately 2 million tons of CO<span><math><msub><mrow></mrow><mn>2</mn></msub></math></span> over 30 years. Advanced injection techniques could increase this capacity to 3 million tons. These results underscore the importance of reservoir properties in optimizing CO<span><math><msub><mrow></mrow><mn>2</mn></msub></math></span> storage and provide crucial insights for guiding future GCS efforts in Switzerland and beyond, supporting informed decision-making and the implementation of decentralized storage projects.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100360"},"PeriodicalIF":0.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157453","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}
引用次数: 0
How to incentive carbon capture and storage technology application in waste-to-energy industry: A facility-level integrated assessment of China
Carbon Capture Science & Technology Pub Date : 2025-01-09 DOI: 10.1016/j.ccst.2025.100364
Kang Zhou , Jiayue Zhang , Mao Xu
{"title":"How to incentive carbon capture and storage technology application in waste-to-energy industry: A facility-level integrated assessment of China","authors":"Kang Zhou ,&nbsp;Jiayue Zhang ,&nbsp;Mao Xu","doi":"10.1016/j.ccst.2025.100364","DOIUrl":"10.1016/j.ccst.2025.100364","url":null,"abstract":"<div><div>Carbon capture and storage (CCS) technology is crucial for the waste-to-energy (WtE) industry to achieve deep decarbonization goals, especially in China. However, there is a lack of understanding of the potential and costs of CCS technology in the WtE industry, particularly from the perspective of facility. Given with this situation, a facility-level integrated assessment model including CCS source-sink matching optimization model and tech-economic assessment model was developed in this study to reveal the application potential and costs of CCS technology in China's WtE industry, and to quantify the impacts of different incentive policies on CCS technology deployment. The results showed that matching WtE facilities with nearby carbon sinks enables significant CO<sub>2</sub> reductions, ranging from 0.3 Gt annually to a cumulative 6.9 Gt over the facilities’ operational lifetimes. The emission reduction costs for all WtE facilities range from -612.9 to 506.5 CNY/t CO<sub>2</sub>, with an average profit of 412.5 CNY/t CO<sub>2</sub> when considering enhanced oil recovery (EOR). However, saline aquifer storage demands robust policy incentives due to limited direct economic benefits. Facilities with larger capacities and longer remaining lifespans are most cost-effective for CCS retrofitting. Spatial analysis underscores geographical disparities in CCS potential, with eastern coastal regions displaying greater feasibility due to higher WtE density and proximity to carbon sinks. Among incentive measures, waste disposal fee subsidies and feed-in tariffs exhibit varying efficiency, while carbon market mechanisms show potential for long-term sustainability. To promote the application of CCS technology and exert its emission reduction effect, a collaborative strategy combining market-driven carbon pricing and government subsidies should be adopted in the future, and priority should be given to the retrofitting of high-capacity and long-life facilities.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100364"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157442","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}
引用次数: 0
Cyclic effects of sulfur deposition on CO2 by vacuum pressure swing adsorption from blast furnace gas
Carbon Capture Science & Technology Pub Date : 2025-01-09 DOI: 10.1016/j.ccst.2025.100361
Yangyang Guo , kaige Du , Lei Luo , Shuoguo Gu , Na Geng , Tingyu Zhu
{"title":"Cyclic effects of sulfur deposition on CO2 by vacuum pressure swing adsorption from blast furnace gas","authors":"Yangyang Guo ,&nbsp;kaige Du ,&nbsp;Lei Luo ,&nbsp;Shuoguo Gu ,&nbsp;Na Geng ,&nbsp;Tingyu Zhu","doi":"10.1016/j.ccst.2025.100361","DOIUrl":"10.1016/j.ccst.2025.100361","url":null,"abstract":"<div><div>Vacuum pressure swing adsorption has a high potential to reduce CO<sub>2</sub> from blast furnace gas, while there are also H<sub>2</sub>S and COS exist in the blast furnace gas, and the sulfur deposition effect on CO<sub>2</sub> adsorption over zeolite was quite necessary to be investigated. In this work, laboratory fixed bed evaluation and two-tower pressure swing adsorption apparatus were employed and it has been found that sulfur deposition occurs only in the presence of coexisting H<sub>2</sub>S and O<sub>2</sub> without water and the highest sulfur accumulation is 13.21 % for the adsorbent under CO<sub>2</sub>+H<sub>2</sub>S+COS+O<sub>2</sub> atmosphere. Cyclic evaluation of H<sub>2</sub>S and COS on CO<sub>2</sub> cyclic adsorption was first reported, and the sulfur is ultimately converted into S monomers and sulfate, which can be deposited inside the pore channel, with the specific surface area reduced 82.26 % of the adsorbent. Furthermore, sulfur deposition gradually diffused with the upward shift of the adsorption mass transfer zone, and the sulfur deposition densities are calculated to be approximately 0.34 g/cm<sup>3</sup>. These mechanisms and data demonstrate the significant impact of sulfur deposition on sustainable CO₂ capture in industrial processes, and provide important guidance for the design of CO₂ capture technologies, which is of great importance for carbon reduction.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100361"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157533","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}
引用次数: 0
Fabrication of vertical structure type bimetallic MOF@ biomass aerogels for efficient CO2 capture and separation
Carbon Capture Science & Technology Pub Date : 2025-01-09 DOI: 10.1016/j.ccst.2025.100362
Jianpeng Huang , Yongjuan Wang , Zhipeng Hu , Deshi Yang , Zhijun Zhang , Fengqiang Wang , Yanjun Xie , Qingwen Wang
{"title":"Fabrication of vertical structure type bimetallic MOF@ biomass aerogels for efficient CO2 capture and separation","authors":"Jianpeng Huang ,&nbsp;Yongjuan Wang ,&nbsp;Zhipeng Hu ,&nbsp;Deshi Yang ,&nbsp;Zhijun Zhang ,&nbsp;Fengqiang Wang ,&nbsp;Yanjun Xie ,&nbsp;Qingwen Wang","doi":"10.1016/j.ccst.2025.100362","DOIUrl":"10.1016/j.ccst.2025.100362","url":null,"abstract":"<div><div>Effectively capturing carbon dioxide (CO<sub>2</sub>) is crucial for environmental protection. In this research, we synthesized a composite aerogel (CSA-n) by integrating a bimetallic metal-organic framework (Mg/Co-MOF-74) with biomass materials (cellulose/chitosan) using an in situ mineralization approach. This composite aerogel exhibited enhanced CO<sub>2</sub> adsorption capabilities than pure biomass aerogel. At 298 K and 100 KPa, the CO<sub>2</sub> adsorption capacity of CSA-3 reached 6.4 mmol/g, an increase of 16.4 % compared to pure MOF. The significant improvement of CO<sub>2</sub> uptakes could be attributed to the more complex pore structure of the composite aerogel compared to pure MOF. Additionally, simulations based on the ideal adsorption solution theory (IAST) showed that the separation factors of CSA-3 for CO<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/CH<sub>4</sub> gas mixtures were 594.3 and 43.4, respectively. Furthermore, the composite aerogel exhibited excellent cyclic stability. After 10 cycles, the CO<sub>2</sub> adsorption capacity of CSA-3 remained at 96.8 %. The results suggest that this bimetallic metal-organic framework @biomass hybrid aerogel holds great potential for CO<sub>2</sub> adsorption and separation applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100362"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157454","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}
引用次数: 0
Enhancing energy efficiency and decarbonization of cement production through integrated calcium-looping and methane dry reforming (CaL-DRM) for in-situ CO2 conversion to syngas
Carbon Capture Science & Technology Pub Date : 2025-01-01 DOI: 10.1016/j.ccst.2024.100359
Fangshu He , Jiaomei Ma , Qiang Hu , Jiashuo Wang , Yingquan Chen , Haiping Yang , Yang Yang
{"title":"Enhancing energy efficiency and decarbonization of cement production through integrated calcium-looping and methane dry reforming (CaL-DRM) for in-situ CO2 conversion to syngas","authors":"Fangshu He ,&nbsp;Jiaomei Ma ,&nbsp;Qiang Hu ,&nbsp;Jiashuo Wang ,&nbsp;Yingquan Chen ,&nbsp;Haiping Yang ,&nbsp;Yang Yang","doi":"10.1016/j.ccst.2024.100359","DOIUrl":"10.1016/j.ccst.2024.100359","url":null,"abstract":"<div><div>The cement industry is exceptionally energy-intensive and a major global carbon emitter, with CO<sub>2</sub> primarily arising from the calcination of carbonate raw meal and the combustion of fossil fuels. This study proposes a novel process integrating calcium looping and dry reforming of methane (CaL-DRM) based on an “in-situ carbon capture and conversion” strategy to enhance the energy efficiency and decarbonization in the cement production process. Models for both conventional cement production process model and the CaL-DRM processes were developed using Aspen Plus to compare the mass flow and process energy balances of conventional cement production with the CaL-DRM process. The modelling results were validated by the cement plant operating data and published results. Sensitivity analyses were performed to optimize key production parameters, including CH<sub>4</sub>/O<sub>2</sub> = 1.37 and CaCO<sub>3</sub>/CH<sub>4</sub> = 0.5, which resulted in the highest conversion efficiencies of CO₂ and CH₄. Subsequently, the optimization of the tertiary air volume and the proportion of hot raw meal entering the carbonator was carried out. The optimal tertiary air volume was found to be less than 28529 Nm³/h, and 13% of the hot raw meal was directed to the carbonator. With these conditions, the process thermal efficiency can be increased from 58 % to 86 %. CO<sub>2</sub> emissions were analyzed at key stages of cement production process, focusing on fuel combustion and carbonate decomposition at the calciner and rotary kiln, with a comparison of the conventional method and the CaL-DRM process to quantify emissions at each stage. The results indicate that 852.3 kg CO₂ per ton of cement clinker can be converted to produce 1680 kg of syngas per ton of cement clinker along with cement clinker. Additionally, up to 62.5 kg CO₂ per ton of cement clinker can be captured by the carbonator, reducing the CO₂ volume fraction in flue gas from 23.29 % to 0.24 %, thus eliminating the need for subsequent CO₂ purification and transport. These findings demonstrate the significant potential of this novel method for sustainable development in the cement industry.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100359"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100119","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}
引用次数: 0
Multiscale modeling for the reduction kinetics of a perovskite oxygen carrier based on quantum chemistry and CFD–DEM
Carbon Capture Science & Technology Pub Date : 2024-12-27 DOI: 10.1016/j.ccst.2024.100357
Ruiwen Wang , Zhenshan Li , Lei Liu
{"title":"Multiscale modeling for the reduction kinetics of a perovskite oxygen carrier based on quantum chemistry and CFD–DEM","authors":"Ruiwen Wang ,&nbsp;Zhenshan Li ,&nbsp;Lei Liu","doi":"10.1016/j.ccst.2024.100357","DOIUrl":"10.1016/j.ccst.2024.100357","url":null,"abstract":"<div><div>The redox of oxygen carriers in chemical looping are non-catalytic heterogeneous reactions which involve physical and chemical processes spanning across four scales: the surface atoms, grains, particles, and the reactor. Although various models are presented in the literature for every single scale, the coupling between every two adjacent scales has not been completely integrated due to the computational cost. A multiscale reaction kinetics model coupling all four scales is developed in this study, combining density-functional theory calculation for reaction mechanisms, microkinetics for grain conversion, the Fick's Law for intraparticle gas diffusion, and CFD–DEM for fluidization. Three coupling simplifications are adopted to reduce computational cost, including the partial equilibrium assumption, continuous grain distribution, and Thiele's-modulus-based effectiveness factor model. Computation is conducted for the reduction of a perovskite oxygen carrier (CaMn<sub>0.375</sub>Ti<sub>0.5</sub>Fe<sub>0.125</sub>O<sub>3−</sub><em><sub>δ</sub></em>) by CO, which is experimentally verified on a micro-fluidized-bed thermogravimetric analyzer. The influences of parameters including the temperature, gas concentration, active site density, specific surface area, and particle diversity, are discussed, providing a comparison on the weights of every scale in the process.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100357"},"PeriodicalIF":0.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156900","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}
引用次数: 0
MOF@MOF core-shell hybrid adsorbents with controlled water vapor affinity towards enhanced and steady CO2 capture in moist conditions
Carbon Capture Science & Technology Pub Date : 2024-12-26 DOI: 10.1016/j.ccst.2024.100356
Solomon K. Gebremariam , Anish Mathai Varghese , Suresh Kuppireddy , Yasser Al Wahedi , Ahmed AlHajaj , Georgios N. Karanikolos , Ludovic F. Dumée
{"title":"MOF@MOF core-shell hybrid adsorbents with controlled water vapor affinity towards enhanced and steady CO2 capture in moist conditions","authors":"Solomon K. Gebremariam ,&nbsp;Anish Mathai Varghese ,&nbsp;Suresh Kuppireddy ,&nbsp;Yasser Al Wahedi ,&nbsp;Ahmed AlHajaj ,&nbsp;Georgios N. Karanikolos ,&nbsp;Ludovic F. Dumée","doi":"10.1016/j.ccst.2024.100356","DOIUrl":"10.1016/j.ccst.2024.100356","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) are promising adsorbents for CO<sub>2</sub> capture due to their highly tuneable chemical and structural properties. However, most MOFs exhibit a strong affinity for moisture, an ubiquitous component of CO<sub>2</sub>-containing mixtures such as flue gas and air, which can lead to a decline in CO<sub>2</sub> capture performance due to competitive adsorption between water vapor and CO<sub>2</sub>. This can also increase the energy required for adsorbent regeneration and result in MOF framework decomposition due to the hydrolysis of weak metal-ligand bonds. Therefore, MOFs must possess low water vapor affinity and high CO<sub>2</sub> affinity to be effective in practical CO<sub>2</sub> capture applications. Hybridizing MOFs with other MOFs combines the distinct features of the individual MOF materials and results in unique properties that cannot be achieved by individual components. This study presents a versatile strategy for fabricating novel MOF@MOF core-shell structures with reduced water vapor affinity by <em>in-situ</em> growth of hydrophobic ZIF-8 shells on the surface of hydrophilic HKUST-1 crystals. The resulting core-shell hybrid adsorbent exhibited low moisture affinity, achieving up to a 70% reduction in water vapor adsorption capacity compared to pure HKUST-1. It also demonstrated an IAST CO<sub>2</sub>/N<sub>2</sub> selectivity of 41.4 for a binary gas mixture containing 15 vol.% CO<sub>2</sub> and 85 vol.% N<sub>2</sub> at 1 bar and 298 K, which is 73% higher than that of HKUST-1 and 211% higher than that of ZIF-8, due to the presence of the ZIF-8 shell with low N<sub>2</sub> adsorption capacity. The reduced water vapor affinity and excellent CO<sub>2</sub> capture performance, with CO<sub>2</sub> uptake of 2.9 mmol g<sup>-1</sup> at 1 bar and 298 K, of the developed core-shell adsorbent, combined with its cyclability in vacuum swing adsorption (VSA)-based experiments without requiring thermal regeneration, make it promising for practical CO<sub>2</sub> capture applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100356"},"PeriodicalIF":0.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156851","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}
引用次数: 0
CO2 electroreduction to C2 products on bimetallic silver copper melamine complexes
Carbon Capture Science & Technology Pub Date : 2024-12-22 DOI: 10.1016/j.ccst.2024.100355
Munzir H. Suliman , Muhammad Usman , Husain Al Naji , Maryam Abdinejad , Naimat Ullah , Aasif Helal , Mahmoud M. Abdelnaby , Guillermo Díaz-Sainz , Gabriele Centi
{"title":"CO2 electroreduction to C2 products on bimetallic silver copper melamine complexes","authors":"Munzir H. Suliman ,&nbsp;Muhammad Usman ,&nbsp;Husain Al Naji ,&nbsp;Maryam Abdinejad ,&nbsp;Naimat Ullah ,&nbsp;Aasif Helal ,&nbsp;Mahmoud M. Abdelnaby ,&nbsp;Guillermo Díaz-Sainz ,&nbsp;Gabriele Centi","doi":"10.1016/j.ccst.2024.100355","DOIUrl":"10.1016/j.ccst.2024.100355","url":null,"abstract":"<div><div>Nanocube crystals of bimetallic Ag-Cu-Melamine molecular complexes have been originally developed as effective electrocatalysts for the CO<sub>2</sub> selective reduction to multicarbon products, particularly ethylene and ethanol. The bimetallic complex, containing 10 wt.% Ag demonstrates the highest performance in electro-reduction of CO<sub>2</sub> in both H-type and flow cells. It achieves a Faradaic efficiency of 70 % for C2 products, with 40 % attributed to ethanol and the remaining to ethylene. These results are obtained at a cathode potential of -1.0 V vs reversible hydrogen electrode (RHE) with a total current density of -50 mA·cm<sup>-2</sup> in the flow cell, five times higher current densities than the current densities in the H-Cell. Without Ag in the complex, only C1 products (CO and formic acid) are detected. The use of the flow cell, in addition to higher current densities, enhances C2 formation, especially ethylene, which is absent in H-type cell experiments. These novel electrocatalysts also exhibit stable performances and provide mechanistic indications of the roles of Ag and tandem cooperation with Cu.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100355"},"PeriodicalIF":0.0,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157355","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}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信