燃料化学学报（中英文）2025，Vol.53Issue(6)：935-942,8.DOI:10.1016/S1872-5813(24)60521-9
胺基多孔MgO/ZrO2复合吸附剂的制备及其在CO2捕获中的应用
Preparation of porous MgO/ZrO2-supported amine-based adsorbents and their application in CO2 capture
摘要
Abstract
Currently,the solid adsorbents with porous structure have been widely applied in CO2 capture.However,the unmodified MgO-ZrO2 adsorbents appeared to be low adsorption capacity of CO2.The solid adsorbent materials were successfully synthesized by loading TEPA onto the pore MgO/ZrO2 carriers in the paper.The pore structure and surface characteristic of the samples were analyzed by using XRD,BET,FT-IR and SEM.The adsorbent materials exhibited microcrystalline state,and the crystallinity of all samples gradually decreased as the increase of TEPA content.The pore structure analysis indicated that the modification of MgO-ZrO2 adsorbents with TEPA led to the decrease of the specific surface areas,but the narrow micro-mesopore size distributions ranging from 1.8-12 nm in the adsorbents still were maintained.FT-IR spectrum results further verified the successful loading of TEPA.The adsorption capacity of the adsorbents for CO2 were tested by using an adsorption apparatus equipped with gas chromatography.The results indicated that when the TEPA loading reached 50％,the sample exhibited the maximum adsorption value for CO2,reaching 4.07 mmol/g under the operation condition of 75 ℃ and atmospheric pressure.This result could be assigned to not only the base active sites but also the coexistence of both micropore and mesopore in the adsorbent.After three cycles tests for CO2 capture,the adsorption value of the sample for CO2 can also reached 95％of its original adsorption capacity,which verified the excellent cyclic operation stability.关键词
CO2捕获/胺基吸附剂/浸渍/微介孔/吸附Key words
CO2 capture/amine-based adsorbent/impregnation/micro-mesopore/adsorption分类
化学化工引用本文复制引用
石国亮,张欣颖,李晓兰,侯春月..胺基多孔MgO/ZrO2复合吸附剂的制备及其在CO2捕获中的应用[J].燃料化学学报（中英文）,2025,53(6):935-942,8.基金项目
The project was supported by Shanxi Provincial Key Research and Development Project(202102090301026),Graduate Education Innovation Project of Taiyuan University of Science and Technology(SY2023024). （202102090301026）
