首页|Examination of key factors determining the catalytic performance of Zn-Ga/HZSM-5 bifunctional catalysts and establishment of reaction network in alkylation of benzene with carbon dioxide
Examination of key factors determining the catalytic performance of Zn-Ga/HZSM-5 bifunctional catalysts and establishment of reaction network in alkylation of benzene with carbon dioxide
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Alkylation of benzene with carbon dioxide(CO2)is significant for converting greenhouse gas and surplus benzene into value-added toluene and xylene.Herein,a bifunctional catalyst comprising Zn/Ga oxides and HZSM-5 zeolite was developed to efficiently promote the methylation of benzene with CO2 and H2.This catalytic system exhibited excellent performance at 425 ℃ and 3.0 MPa,through which benzene conversion of 39.1% and total xylene/toluene selectivity of 92.7% have been achieved.Furthermore,the catalysts are carefully characterized; compositions of Zn/Ga oxides and Si/Al ratios of HZSM-5 zeolite are recognized as decisive factors for reaction activity and selectivity respectively.Additionally,primary reaction pathways are explored and testified to provide detailed understanding for the establishment of reaction networks,especially for mechanisms of eth-ylbenzene evolution.These findings are able to provide more deep insights into the process of benzene alkylation,which further facilitates the emergence of effective catalysts with potential industrial applications.
Engineering Research Center of Large Scale Reactor Engineering and Technology,Ministry of Education,East China University of Science & Technology,Shanghai 200237,PR China
NSTL
