Greenhouse Gases: Science and Technology最新文献_第7页

Effect of delay time of working face pressure change on airflow direction in gob: A simulation study 工作面压力变化延迟时间对咯咯气流方向的影响：模拟研究

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-04-12 DOI: 10.1002/ghg.2269

Kai Wang, Chuanwen Sun

{"title":"Effect of delay time of working face pressure change on airflow direction in gob: A simulation study","authors":"Kai Wang, Chuanwen Sun","doi":"10.1002/ghg.2269","DOIUrl":"10.1002/ghg.2269","url":null,"abstract":"For shallow buried mines, the cracks generated due to the mining activities will connect the surface ground and the working face through the gob, which may result in the gas exchange between the surface and underground. In this study, we proposed the gob gas flow model and verified its applicability based on the measured data on site in our previous research and discussed the effect of delay time of pressure variation between working face and surface ground on the airflow direction according to the simulation. The results suggest that the delay time of pressure variation is the main factor affecting the pressure difference between surface and working face and airflow direction. Due to the characteristics of the surface pressure changes, the effect of delay time on airflow in gob is small in a short time, but this effect gradually increases with time. According to the airflow law in a cycle of pressure variation, the airflow direction in the gob is predictable when the delay time reaches a certain value, which can be interpreted clearly on the surface pressure variation diagram. This research may provide references for the measures taken against mine disasters caused by different airflow directions. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 3","pages":"456-469"},"PeriodicalIF":2.2,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140566086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on the performance of a highly efficient NE-1 absorbent for CO2 capture 二氧化碳捕获用高效 NE-1 吸收剂性能的实验研究

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-04-08 DOI: 10.1002/ghg.2272

Chenzhi Huang, Yongda Cao, Yaxin Li, Qi Li, Qiang Liu, Lin Xia, Xiujun Peng, Hairong Yue

{"title":"Experimental study on the performance of a highly efficient NE-1 absorbent for CO2 capture","authors":"Chenzhi Huang, Yongda Cao, Yaxin Li, Qi Li, Qiang Liu, Lin Xia, Xiujun Peng, Hairong Yue","doi":"10.1002/ghg.2272","DOIUrl":"10.1002/ghg.2272","url":null,"abstract":"CO2 capture by absorption and stripping with aqueous amine is a well-understood and widely used technology. However, drawbacks still exist in the practical applications, such as high energy consumption and easy degradation of the absorbents during the desorption process. In this paper, a novel NE-1 absorbent was developed, and its suitable operating conditions were determined: concentration (45 wt.%), absorption temperature (40 °C), and desorption temperature (100 °C). The NE-1 absorbent exhibits a high CO2 absorption capacity of 3.73 mol/kg, 1.33 times that of 30% monoethanolamine (MEA). After optimizing with carbamide as a corrosion inhibitor, 45% NE-1a1 may attain an effective CO2 capacity of 2.5 mol/kg and over 70% desorption rate in five cycles, demonstrating excellent cycling stability performance. The research results have significant implications for developing an efficient and stable commercial carbon capture solvent and promoting the development of carbon reduction technologies. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 3","pages":"442-455"},"PeriodicalIF":2.2,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140566061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the influence of different thermal coals on the mixed-burning characteristics of ventilation air methane and pulverized coal 不同热煤对通气甲烷和煤粉混合燃烧特性的影响研究

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-04-03 DOI: 10.1002/ghg.2271

Chaoyu Hao, Yufei Liu, Yankun Chen, Yachao Zhang, Cunbao Deng

{"title":"Study on the influence of different thermal coals on the mixed-burning characteristics of ventilation air methane and pulverized coal","authors":"Chaoyu Hao, Yufei Liu, Yankun Chen, Yachao Zhang, Cunbao Deng","doi":"10.1002/ghg.2271","DOIUrl":"10.1002/ghg.2271","url":null,"abstract":"To effectively utilize ventilation air methane (VAM), it is proposed to pass it into the boiler of the coal-fired power plant for mixed combustion. However, the different types of thermal coal utilized present distinct characteristics when mixed with VAM. In this paper, lignite, bituminous coal, and anthracite are selected to study the CH4 conversion rate, system ignition temperature, and NO emission characteristics of the VAM-pulverized coal coupled system on a fluidized bed experimental platform. The experimental results show that the ignition temperatures of VAM are 748, 736, and 732 °C when the CH4 concentration is 0.25, 0.5, and 0.75%. After the addition of thermal coal, the ignition temperature decreased significantly. When the CH4 concentration is 0.25%, the ignition temperature of the lignite-VAM system is the lowest, which is 450 °C. Anthracite has the strongest catalytic effect on CH4 combustion. When the heating rate is 5 °C /min, the reaction rate of CH4 is the fastest in the anthracite-VAM coupled system. Under laboratory conditions, the peak NO concentration in the coal-VAM coupled system was lignite > bituminous coal > anthracite at different CH4 concentrations, and the CH4 in VAM had a reducing action on the NO generated during mixed combustion, with a stronger reducing effect observed as the CH4 concentration increased. The results of this study can lay the foundation for the industrial application of the mixed combustion of VAM and thermal coal, and be of great significance for solving the practical problems caused by the change of boiler coal types. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 3","pages":"427-441"},"PeriodicalIF":2.2,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140566223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reciprocal cross-correlation analysis of two-phase seepage processes and reservoir heterogeneities in CO2 saline aquifer sequestration 二氧化碳含盐含水层封存中两相渗流过程和储层异质性的互为交叉相关分析

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-04-02 DOI: 10.1002/ghg.2268

Yiyan Zhong, Qi Li, Liang Xu, Yiping Wen, Yukun Li

{"title":"Reciprocal cross-correlation analysis of two-phase seepage processes and reservoir heterogeneities in CO2 saline aquifer sequestration","authors":"Yiyan Zhong, Qi Li, Liang Xu, Yiping Wen, Yukun Li","doi":"10.1002/ghg.2268","DOIUrl":"10.1002/ghg.2268","url":null,"abstract":"When CO2 saline aquifer storage is carried out, the heterogeneity of reservoir rock is an important factor affecting CO2 transport, and the reservoir heterogeneity in numerical simulations is mainly manifested as the heterogeneity of the parameter field. Since the parameter distributions across the reservoir are not available with the existing probes, the stochastic finite element method is combined with a two-phase flow model to establish an unconditional random field of permeability, and computations are performed using the Monte Carlo method. The permeability, CO2 maximum migration distance (Md) and CO2 sweep area (Sa) were analyzed for mutual correlation. The permeability correlation area affecting Md and Sa was obtained, and the changes in the correlation area under the coefficient of variation (Cv) and correlation length (λx) of the permeability field in the different reservoirs were analyzed. The kriging superposition approach (KSA) was subsequently used to estimate both the Md and Sa of the target reservoir by establishing conditional random fields based on the sampling parameters in regions with different correlations, resulting in errors of 0.66% for Md and 0.96% for Sa in the high correlation region and 4.86% and 3.12% for Md and Sa in the low correlation region, which suggested that the sampling results from the high correlation region were less biased in the estimation. Under limited sampling conditions, it is recommended that samples be collected in regions with high correlations to reduce the uncertainty of CO2 transport analysis due to unknown heterogeneity. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 3","pages":"356-370"},"PeriodicalIF":2.2,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140566222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CO2 capture and dissociation on novel Ni/CaO bifunctional materials: A theoretical study 新型 Ni/CaO 双功能材料上的二氧化碳捕获和解离：理论研究

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-03-31 DOI: 10.1002/ghg.2270

Hao Wang, Rongrong Li, Enna Wang, Zhengtong Zhu, Jianbin Zhang

{"title":"CO2 capture and dissociation on novel Ni/CaO bifunctional materials: A theoretical study","authors":"Hao Wang, Rongrong Li, Enna Wang, Zhengtong Zhu, Jianbin Zhang","doi":"10.1002/ghg.2270","DOIUrl":"10.1002/ghg.2270","url":null,"abstract":"Calcium-looping dry reforming of methane (CaL-DRM) strategy mainly relies on novel Ni/CaO-based dual-functional materials, in which its microscopic mechanism remains to be further explored. In this work, molecular simulation of the adsorption and dissociation processes of CO2 was performed on the surface of Ni/CaO dual-functional materials (DFMs) based on density functional theory (DFT). The analyses of electron density, partial density of states, and formation energy suggest that the Ni/CaO model has higher stability and activity than the CaO model. The analyses of the evolution of chemical bonds, adsorption energy, density of states, and charge population after the adsorption of CO2 on the CaO surface and Ni/CaO shows that the modification with Ni made the adsorption of CO2 on Ni/CaO more stable. The transient calculations indicate that the path with the lowest activation energy is the H-mediated dissociation path of chemisorption carboxyl COOH* as an intermediate, which is the possible dissociation path of CO2 on the surface of Ni/CaO DFMs. The dissociation of COOH* into CO* and OH* is the rate-controlling step of the reaction. The DFT results demonstrate that the doping of Ni during the preparation of CaO materials can realize and enhance the CaL-DRM processes, which provide a theoretical basis for the optimum preparation of Ni/CaO-based DFMs. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 3","pages":"411-426"},"PeriodicalIF":2.2,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140566063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the potential for CO2 storage in saline aquifers in Brazil: Challenges and Opportunities 评估在巴西含盐蓄水层封存二氧化碳的潜力：挑战与机遇

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-03-19 DOI: 10.1002/ghg.2265

Nathália Weber, Saulo B. de Oliveira, Allan Cavallari, Isabela Morbach, Colombo C. G. Tassinari, Julio Meneghini

{"title":"Assessing the potential for CO2 storage in saline aquifers in Brazil: Challenges and Opportunities","authors":"Nathália Weber, Saulo B. de Oliveira, Allan Cavallari, Isabela Morbach, Colombo C. G. Tassinari, Julio Meneghini","doi":"10.1002/ghg.2265","DOIUrl":"10.1002/ghg.2265","url":null,"abstract":"This study underscores the critical role of carbon capture and storage (CCS) in mitigating greenhouse gas emissions and addresses the potential for CCS projects in saline aquifers in Brazil, one of the world's largest carbon emitters. The country's ability to adopt CCS is significantly influenced by the availability of data related to regional CO2 storage potential and identifying suitable geological framework for CO2 injection. While oil and gas reservoirs have traditionally been prioritized, saline aquifers represent an underexplored and potentially higher capacity storage option. Despite Brazil's 31 sedimentary basins, the data quantity and availability for these contexts remain insufficient for advanced studies on the geological storage of CO2 considering saline aquifers. An initial study was conducted indicating five potential targets in the Paraná and Potiguar Basins for geological storage in saline aquifers based on available public data, mainly drilling data. This review reveals substantial challenges related to the evaluation of Brazil's CO2 storage capacity, such as the lack of modern seismic studies, the absence of a regulatory framework for CO2 storage, and insufficient investment in new well exploration. These challenges necessitate multistakeholder collaboration, the development of a supportive regulatory environment, and investment in extensive site characterization campaigns. Addressing these barriers is fundamental to realizing the country's CCS potential and contributing to global decarbonization efforts. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 2","pages":"319-329"},"PeriodicalIF":2.2,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140182309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geochemical assessment of mineral sequestration of carbon dioxide in the midcontinent rift 大陆中部裂谷二氧化碳矿物封存地球化学评估

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-03-18 DOI: 10.1002/ghg.2266

Alsedik Abousif, David Wronkiewicz, Abdelmoniem Masoud

{"title":"Geochemical assessment of mineral sequestration of carbon dioxide in the midcontinent rift","authors":"Alsedik Abousif, David Wronkiewicz, Abdelmoniem Masoud","doi":"10.1002/ghg.2266","DOIUrl":"10.1002/ghg.2266","url":null,"abstract":"This study examines the potential of Midcontinent Rift rocks to facilitate long-term CO2 sequestration by providing the necessary Ca and Mg for carbonate mineralization. Surface samples were collected from the Oronto and Bayfield-Jacobsville Groups around Lake Superior and used for petrography and X-ray diffraction to determine their mineral composition. Also, X-ray fluorescence was also used to assess their bulk chemical composition. The samples were then exposed to CO2 and deionized water in Teflon-lined vessels at 90°C, and the resulting leachate fluids were analyzed for the cation released during the testing. SEM microscopy was used to examine the samples for potential mineralization of carbonate minerals. The Oronto Group sediments consist primarily of feldspathic to feldspathic lithic arenites with a chlorite-dominated matrix, and the primary porosity is blocked by calcite and hematite cement. The Bayfield–Jacobsville sequences are porous quartz arenites to feldspathic quartz arenites that do not contain significant accumulation of Ca-, Mg-, and Fe-bearing minerals. The leachate fluids obtained from Oronto Group samples exhibit a maximum Ca release rate (5.2 × 10−4 mole/cm2.day), indicating rapid calcite cement dissolution and increased porosity and permeability. SEM/EDS microanalysis revealed areas where pore-filling calcite was preferentially dissolved. Longer-term rock-water reactions resulted in induced carbonate mineralization, as evidenced by calcite crystals observed in a sample reacted for 102 days. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 2","pages":"295-318"},"PeriodicalIF":2.2,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140166663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in CO2 recycle to alcohols and ethers through hydrogenation 通过氢化将二氧化碳回收到醇和醚中的进展

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-03-13 DOI: 10.1002/ghg.2267

Alberto Boretti

{"title":"Advances in CO2 recycle to alcohols and ethers through hydrogenation","authors":"Alberto Boretti","doi":"10.1002/ghg.2267","DOIUrl":"10.1002/ghg.2267","url":null,"abstract":"This paper addresses the urgent challenge of CO2 emissions and the need for sustainable energy sources. It emphasizes CO2 hydrogenation as a promising solution for large-scale long-term energy storage, converting CO2 into valuable fuels using green hydrogen generated from renewable sources. The study concentrates on exploring pathways leading to oxygenated compounds, such as alcohols or ethers, for their utilization as sustainable fuels. The investigation encompasses methanol, dimethyl ether, ethanol, and higher alcohols. The paper investigates catalysts for CO2 hydrogenation, ranging from traditional metal-based to advanced materials, aiming to identify efficient and stable catalysts for synthesizing oxygenated compounds. Catalysts are indispensable in CO2 hydrogenation for the synthesis of oxygenated compounds, contributing to improved reaction kinetics, selectivity, economic viability, reduced environmental impact, and the overall sustainability of the process. The goal is to contribute to a fully renewable, carbon-neutral system powered by excess solar and wind electricity, where recycled CO2 and green hydrogen are used to produce fuels, to be stored and then used to produce energy, electricity, heat, or mechanical energy, on demand, with the capture of the CO2, in a system which is overall carbon neutral. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 2","pages":"330-347"},"PeriodicalIF":2.2,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140152844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic analysis of CO2 hydrate formation in the aqueous solutions of transition metal chlorides 过渡金属氯化物水溶液中二氧化碳水合物形成的动力学分析

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-02-13 DOI: 10.1002/ghg.2264

Fa-Ping Liu, Ai-Rong Li, Cheng Wang, Yu-Ling Ma

{"title":"Kinetic analysis of CO2 hydrate formation in the aqueous solutions of transition metal chlorides","authors":"Fa-Ping Liu, Ai-Rong Li, Cheng Wang, Yu-Ling Ma","doi":"10.1002/ghg.2264","DOIUrl":"10.1002/ghg.2264","url":null,"abstract":"CO2 hydrate technology can be applied to seawater desalination. However, the kinetics of CO2 hydrate formation were inhibited in the aqueous solution with inorganic salts, and the kinetic mechanism of CO2 hydrate formation for inorganic salts with different metal cations and anions was still unclear. In this work, CO2 hydrate nucleation and growth were studied in aqueous solutions of metal chlorides. Instead of Na+ and K+ ions, CO2 hydrate nucleation was promoted in the presence of Ni2+, Mn2+, Zn2+ and Fe3+ ions due to the co-ordination bonds between transition metal ions and water molecules to enhance the formation of the critical crystal nuclei. The induction time was increased by 61.1% in aqueous solution with 0.32 mol/L NaCl, while it was shortened by 55.6% in FeCl3 aqueous solution at the same concentration of Cl− anions. In the process of CO2 hydrate growth, Cl− ions played a more important role than the metal ions in affecting the stability of CO2 hydrate cages. The gas storage capacity was reduced by 10.3% in the presence of NaCl, and was lower than that of other metal chlorides. Cl− anions were absorbed on the hydrate surface and involved in hydrate cages to inhibit the hydrate growth due to the hydrogen bonds between the Cl− ions and water molecules of the hydrate cages. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 2","pages":"284-294"},"PeriodicalIF":2.2,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ghg.2264","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139756716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physicochemical synergistic adsorption of CO2 by PEI-impregnated hierarchical porous polymers 聚乙烯醇浸渍分层多孔聚合物对二氧化碳的物理化学协同吸附作用

IF 2.2 4区环境科学与生态学

Greenhouse Gases: Science and Technology Pub Date : 2024-02-13 DOI: 10.1002/ghg.2263

Lanxin Li, Zhibo Luo, Wei Zou, Shengke Liang, Hong Wang, Chen Zhang

{"title":"Physicochemical synergistic adsorption of CO2 by PEI-impregnated hierarchical porous polymers","authors":"Lanxin Li, Zhibo Luo, Wei Zou, Shengke Liang, Hong Wang, Chen Zhang","doi":"10.1002/ghg.2263","DOIUrl":"10.1002/ghg.2263","url":null,"abstract":"Amine-functionalized porous polymers have been considered as a prominent chemical adsorption material for carbon capture and storage (CCS) process, because of their large adsorption capacity and high selectivity. By comparison, the low energy-consumption for desorption and high recyclability are the advantages of the physical adsorption approach. In this work, an amine-functionalized hierarchical porous polymer was prepared by HIPE (high internal phase emulsions) template and amine impregnation strategy, and applied as CO2 adsorbent to realize chemical adsorption and physical adsorption simultaneously. First, a hierarchical porous matrix of poly(styrene-glycidyl methacrylate) was prepared by the HIPE method. The formed meso/micropores in the typical porous polymer matrix could attract CO2 molecules, where the physical adsorption was achieved. Subsequently, PEI (polyethyleneimine) was impregnated into the porous polymer with abundant macropores, and the numerous of amino groups provided the reaction sites, where the chemical adsorption was achieved. As a result, an effective CO2 adsorption material was obtained via controlling the porous structure by changing the volume fraction of dispersive phase, impregnation condition and amine loading. Aided by the chemical adsorption of amino groups, the CO2 adsorption capacity of the obtained adsorbent reached 3.029 mmol/g. Moreover, the CO2 adsorption thermodynamics confirmed the physicochemical synergistic adsorption, and then the Qst reduced to 31–42 kJ/mol and a good cyclic stability was obtained. As conclusion, the porous adsorbent showed a good industrial application prospect. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"14 2","pages":"270-283"},"PeriodicalIF":2.2,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139756903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0