Production of linear alkylbenzene over Ce containing Beta zeolites  

作　　者：Shiqi Zhang Shengzhi Gan Baoyu Liu Jinxiang Dong 

机构地区：[1]School of Chemical Engineering and Light Industry,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery,Guangzhou Key Laboratory of Clean Transportation Energy Chemistry,Guangdong University of Technology,Guangzhou 510006,China [2]Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory),Jieyang 515200,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第3期220-227,共8页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(22278090,21978055);Natural Science Foundation of Guangdong Province,China(2022A1515012088);the Science and Technology Planning Project of Guangdong Province,China(2022A0505030073,2022A0505030013).

摘　　要：Ce-encapsulated Beta zeolite was synthesized by a one-pot hydrothermal method with citric acid complexing Ce in the absence of Na species.Additional citric acid can effectively prevent the deposition of Ce species during the hydrothermal synthesis of zeolites,leading to uniform distribution of Ce cluster in the framework of Beta zeolites.Moreover,the sodium-free synthesis system resulted that the Brønsted acid sites were mainly located on the straight channels and external surface of Beta zeolites,improving the utilization of Brønsted acid sites.In addition,Ce encapsulated Beta zeolites showed enhanced activity and robust stability in the alkylation of benzene with 1-dodecene based on the synergistic effect between Ce species and Brønsted acid sites,which pave the way for its practical application in the production of alkylbenzene.

关 键 词：Beta zeolites CATALYSIS ALKYLATION Long-chain olefins 

分 类 号：TQ241[化学工程—有机化工] TQ426