化工进展2025，Vol.44Issue(3)：1396-1405,10.DOI:10.16085/j.issn.1000-6613.2024-0471
Zn调控Fe基催化剂催化CO2加氢制低碳烯烃
Low-carbon olefins from CO2 hydrogenation over Zn-modulated Fe-based catalysts
摘要
Abstract
The current excessive emission of carbon dioxide(CO2)has led to global problems such as the greenhouse effect,glacier melting and climate anomalies.In order to solve this problem,CO2 hydrogenation is proposed to prepare various high value-added chemicals.This solution can not only effectively reduce the problem of excessive CO2 concentration,but also achieve the resourceful use of CO2 to alleviate the energy crisis.In this study,Zn-modulated K-nFe/Zn catalysts were prepared by co-precipitation and isocratic impregnation for the hydrogenation of CO2 to low-carbon olefins(C2=—C4=),with emphasis on the effect of Zn content on the catalytic activity.The results of catalyst evaluation showed that at 320℃,3MPa,and H2/CO2=3,the catalyst exhibited the highest CO2 conversion of 29.3%and low carbon olefin selectivity of 33.8%with Fe/Zn=1.The results of charging showed that the modulating effect of Zn could effectively increase the dispersion degree of Fe nanoparticles and reduce the reduction temperature of Fe-based catalysts,while Zn was also able to promote the formation of iron carbide,which enhanced the performance of CO2 hydrogenation to low-carbon olefins.关键词
二氧化碳/低碳烯烃/催化剂/Zn调控/活性/碳化铁Key words
carbon dioxide/low-carbon olefins/catalyst/Zn modulation/activity/iron carbide分类
化学化工引用本文复制引用
刘江涛,彭冲,张永春..Zn调控Fe基催化剂催化CO2加氢制低碳烯烃[J].化工进展,2025,44(3):1396-1405,10.基金项目
上海市自然科学基金(21ZR1425700) （21ZR1425700）
中央高校基本科研业务费专项(DUT23RC(3)044). （DUT23RC(3）
