Wenhui Bi , Fanqi Min , Xing Fan , Tengfei Zhang , Qing Liu , Peng Liang
{"title":"沸石基吸附剂促进煤层气中CH4/N2/CO2分离的研究进展","authors":"Wenhui Bi , Fanqi Min , Xing Fan , Tengfei Zhang , Qing Liu , Peng Liang","doi":"10.1016/j.cherd.2025.09.010","DOIUrl":null,"url":null,"abstract":"<div><div>Coalbed methane has attracted significant attention due to its potential for comprehensive utilization and the imperative need to control the emissions of the potent greenhouse gas methane. Pressure-swing adsorption separation is the most feasible gas enrichment technique, and zeolites show remarkable potential in the selective separation of CH<sub>4</sub>, N<sub>2</sub>, and CO<sub>2</sub> from coalbed methane due to their pore regularity and homogeneity, high specific surface area, large pore volume, and strong polarity. ETS-4, SAPO-18 and SAPO-34 exhibit N<sub>2</sub>/CH<sub>4</sub> selectivities up to 26, 15 and 12, respectively, while ZK-5, zeolite A, X, Y, ZSM-5 and silicalite-1 deliver CH<sub>4</sub>/N<sub>2</sub> selectivities up to 11.8 (Ag-ZK-5) and adsorption capacities of 1.2–4.0 mmol g⁻<sup>1</sup> CH<sub>4</sub> at 298 K and 0.1–0.3 MPa. Eight-membered-ring zeolites such as Li-SSZ-13, NaMg-GIS, SAPO-17 and K-MER achieve CO<sub>2</sub>/N<sub>2</sub> selectivities of 310, 132, 276 and 85, respectively, with CO<sub>2</sub> adsorption capacities of 1.3–4.5 mmol g⁻<sup>1</sup> at 298 K and 0.1 MPa. A comprehensive review of recent advances in zeolites synthesis, modification techniques and adsorption kinetics is presented to elucidate the factors responsible for the increased CH<sub>4</sub> adsorption capacity and selectivity of different zeolite types. Furthermore, this review proposes the prevailing challenges and offers our personal perspectives for the application of zeolite in coalbed methane enrichment.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"222 ","pages":"Pages 205-226"},"PeriodicalIF":3.9000,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Recent advances in zeolite-based adsorbents for enhanced CH4/N2/CO2 separation in coalbed methane\",\"authors\":\"Wenhui Bi , Fanqi Min , Xing Fan , Tengfei Zhang , Qing Liu , Peng Liang\",\"doi\":\"10.1016/j.cherd.2025.09.010\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Coalbed methane has attracted significant attention due to its potential for comprehensive utilization and the imperative need to control the emissions of the potent greenhouse gas methane. Pressure-swing adsorption separation is the most feasible gas enrichment technique, and zeolites show remarkable potential in the selective separation of CH<sub>4</sub>, N<sub>2</sub>, and CO<sub>2</sub> from coalbed methane due to their pore regularity and homogeneity, high specific surface area, large pore volume, and strong polarity. ETS-4, SAPO-18 and SAPO-34 exhibit N<sub>2</sub>/CH<sub>4</sub> selectivities up to 26, 15 and 12, respectively, while ZK-5, zeolite A, X, Y, ZSM-5 and silicalite-1 deliver CH<sub>4</sub>/N<sub>2</sub> selectivities up to 11.8 (Ag-ZK-5) and adsorption capacities of 1.2–4.0 mmol g⁻<sup>1</sup> CH<sub>4</sub> at 298 K and 0.1–0.3 MPa. Eight-membered-ring zeolites such as Li-SSZ-13, NaMg-GIS, SAPO-17 and K-MER achieve CO<sub>2</sub>/N<sub>2</sub> selectivities of 310, 132, 276 and 85, respectively, with CO<sub>2</sub> adsorption capacities of 1.3–4.5 mmol g⁻<sup>1</sup> at 298 K and 0.1 MPa. A comprehensive review of recent advances in zeolites synthesis, modification techniques and adsorption kinetics is presented to elucidate the factors responsible for the increased CH<sub>4</sub> adsorption capacity and selectivity of different zeolite types. Furthermore, this review proposes the prevailing challenges and offers our personal perspectives for the application of zeolite in coalbed methane enrichment.</div></div>\",\"PeriodicalId\":10019,\"journal\":{\"name\":\"Chemical Engineering Research & Design\",\"volume\":\"222 \",\"pages\":\"Pages 205-226\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Research & Design\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0263876225004824\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Research & Design","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263876225004824","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Recent advances in zeolite-based adsorbents for enhanced CH4/N2/CO2 separation in coalbed methane
Coalbed methane has attracted significant attention due to its potential for comprehensive utilization and the imperative need to control the emissions of the potent greenhouse gas methane. Pressure-swing adsorption separation is the most feasible gas enrichment technique, and zeolites show remarkable potential in the selective separation of CH4, N2, and CO2 from coalbed methane due to their pore regularity and homogeneity, high specific surface area, large pore volume, and strong polarity. ETS-4, SAPO-18 and SAPO-34 exhibit N2/CH4 selectivities up to 26, 15 and 12, respectively, while ZK-5, zeolite A, X, Y, ZSM-5 and silicalite-1 deliver CH4/N2 selectivities up to 11.8 (Ag-ZK-5) and adsorption capacities of 1.2–4.0 mmol g⁻1 CH4 at 298 K and 0.1–0.3 MPa. Eight-membered-ring zeolites such as Li-SSZ-13, NaMg-GIS, SAPO-17 and K-MER achieve CO2/N2 selectivities of 310, 132, 276 and 85, respectively, with CO2 adsorption capacities of 1.3–4.5 mmol g⁻1 at 298 K and 0.1 MPa. A comprehensive review of recent advances in zeolites synthesis, modification techniques and adsorption kinetics is presented to elucidate the factors responsible for the increased CH4 adsorption capacity and selectivity of different zeolite types. Furthermore, this review proposes the prevailing challenges and offers our personal perspectives for the application of zeolite in coalbed methane enrichment.
期刊介绍:
ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering.
Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.