化工学报2024，Vol.75Issue(z1)：217-222,6.DOI:10.11949/0438-1157.20240823
载体对于胺浸渍类DAC吸附剂性能的影响
Effects of support materials on amine-impregnated DAC adsorbents
摘要
Abstract
Direct air capture(DAC)is a highlight among carbon capture and storage technologies in recent years,and adsorption is the mainstream DAC technology.The performance of adsorbent is the key of adsorption DAC.The ideal adsorbent should satisfy the following advantages:high CO2 capacity,low regeneration energy consumption,and high stability.Generally,the capacity of amine-impregnated adsorbent is higher,but the support materials decide the adsorbent performance.In this study,γ-Al2O3 and MCF was impregnated with PEI to discuss the effects of support materials on adsorbents.According to the results,the effects of support materials on the adsorbents are mainly reflected in CO2 capacity and adsorption kinetics.In 0.4 mbar and 25℃,the capacity of PEI-MCF and PEI-Al2O3 are 1.76 mmol/g and 1.49 mmol/g respectively.As for adsorption kinetics,PEI-MCF is 62％faster than PEI-Al2O3 in the dry condition.In the humid condition,the capacity and kinetics of PEI-MCF is also better than PEI-Al2O3.However,the cycle stability of two materials has little difference,which indicates scarce influence of support materials.关键词
直接空气捕集/二氧化碳/吸附(作用)/吸附剂/胺浸渍/载体Key words
direct air capture/carbon dioxide/adsorption/adsorbents/amine-impregnated/support分类
资源环境引用本文复制引用
陈彦霖,周爱国,郑家乐,杨川箬,葛天舒..载体对于胺浸渍类DAC吸附剂性能的影响[J].化工学报,2024,75(z1):217-222,6.基金项目
国家自然科学基金项目(52376011) （52376011）
中国石油集团科技项目(2022DJ6607) （2022DJ6607）
