文献类型：期刊文献

中文题名：Alkylation of benzene with carbon dioxide to low-carbon aromatic hydrocarbons over bifunctional Zn-Ti/HZSM-5 catalyst

作者：Xiangyu Liu[1];Yanling Pan[2];Peng Zhang[1];Yilin Wang[1];Guohao Xu[1];Zhaojie Su[1];Xuedong Zhu[1];Fan Yang[1]

机构：[1]Engineering Research Center of Large-Scale Reactor Engineering and Technology,Ministry of Education,East China University of Science and Technology,Shanghai,200237,China;[2]Department of Product Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai,200237,China

年份：2022

卷号：16

期号：3

起止页码：384

中文期刊名：Frontiers of Chemical Science and Engineering

外文期刊名：化学科学与工程前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2021_2022】；PubMed;

基金：This project was sponsored financially by Shanghai Postdoctoral Scientific Program(Grant No.14R21410400);the National Natural Science Foundation of China(Grant No.2177061270).

语种：英文

中文关键词：carbon dioxide;benzene;alkylation;bifunctional catalyst;mechanism

摘要：Alkylation of benzene to value-added,high octane number and low toxic toluene and xylenes provides a way to lower benzene content in gasoline pool,and is hence a method to promote fuel quality.On the other hand,CO_(2) accumulation in the atmosphere causes global warming and requires effective route for its valorization.Utilization of CO_(2) as a carbon source for benzene alkylation could achieve both goals.Herein,alkylation of benzene with CO_(2) and H2 was realized by a series of low-cost bifunctional catalysts containing zinc/titanium oxides(Zn/Ti oxides)and HZSM-5 molecular sieves in a fixed-bed reactor.By regulating and controlling oxygen vacancies of Zn/Ti oxides and the acidities of HZSM-5,benzene conversion and CO_(2) conversion reached 28.7%and 29.9%respectively,along with a total selectivity of toluene and xylene higher than 90%.In this process,more than 25%CO_(2) was effectively utilized and incorporated into the target products.Moreover,the mechanism of the reaction was analyzed and the course was simultaneously traced.CO_(2) was transformed into methanol firstly,and then methanol reacted with benzene generating toluene and xylene.The innovation provides a new method for upgrading of fuels and upcycling the emissions of CO_(2),which is of great environmental and economic benefits.