燃料化学学报（中英文）2025，Vol.53Issue(9)：1342-1353,12.DOI:10.1016/S1872-5813(25)60559-7
SO42-/TiO2-HZSM-5催化富CO2胺溶液解吸性能研究
Catalytic desorption performance of CO2-rich amine solution over SO42-/TiO2-HZSM-5
摘要
Abstract
Amine-based solution absorption as the most mature CO2 capture method,its key lies in improving CO2 desorption performance while reducing energy consumption in desorption.A series of SO42-/TiO2-HZSM-5 catalysts with different TiO2 contents were prepared by sol-gel method using HZSM-5 as carrier and used in CO2 catalytic desorption of N-methyl-diethanolamine and piperazine blended amine solution.Results indicated that catalyst performance can be regulated by changing the loading amount of TiO2.When the mass ratio of TiO2 to HZSM-5 was 2/1,the resultant STH(2/1)catalyst had large mesoporous surface area and abundant acidic sites and exhibited excellent catalytic performance.Compared with non-catalytic system,CO2 desorption amount of the entire desorption increased by 15.38％and relative heat duty decreased by 21.69％.Meanwhile,STH(2/1)exhibited good activity and stability after regeneration cycles and had no impact on CO2 absorption performance.Larger mesoporous surface area of catalyst facilitated sufficient contact between reactants and acidic sites.Abundant amount of strong acid sites and Brønsted acid sites provided a large amount of H+,promoting the decomposition of carbamate and deprotonation of protonated amines.The combined action of mesoporous surface area,strong acid sites and Brønsted acid sites promoted CO2 desorption.In addition,a possible mechanism for CO2 desorption catalyzed by SO42-/TiO2-HZSM-5 was proposed.关键词
CO2捕集/混合胺溶液/硫酸化金属氧化物/CO2催化解吸/相对再生能耗Key words
CO2 capture/blended amines/sulfated metal oxides/CO2 catalytic desorption/relative heat duty分类
化学化工引用本文复制引用
宋汶谦,闻育新,康国俊,李德康,胡浩权,靳立军,陆诗建,严忠,刘鹏飞..SO42-/TiO2-HZSM-5催化富CO2胺溶液解吸性能研究[J].燃料化学学报（中英文）,2025,53(9):1342-1353,12.基金项目
The project was supported by the "Unveiling the List and Leading the Way" Science and Technology Project of Xinjiang Uygur Autonomous Region in 2023(2023-13908).新疆维吾尔自治区2023年度揭榜挂帅项目(2023-13908)资助 （2023-13908）
