Elucidating the effect of oxides on the zeolite catalyzed alkylation of benzene with 1-dodecene  

作　　者：Shiyong Xing Yan Cui Tiefeng Wang Jinwei He Minghan Han 

机构地区：[1]Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China [2]Petrochemical Research Institute,PetroChina Company Limited,Beijing 100195,China [3]Henan Energy and Chemical Industry Group Company Limited,Zhengzhou 450046,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第4期126-135,共10页中国化学工程学报（英文版）

摘　　要：In the present work, the effect of oxides on the alkylation of benzene with 1-dodecene was comprehensively investigated over MCM-49 n-heptanol, n-heptaldehyde and n-heptanoic acid were selected as the model oxides herein, and obvious decrease of lifetime could be caused by only trace amount of oxides added in the feedstocks. However, the deactivated catalysts were difficult to be regenerated by extraction with hot benzene. Additionally, coke-burning was also proved to be incapable to regenerate the deactivated catalysts mainly for the dealumination during calcination. Further characterizations complementary with DFT calculations were conducted to demonstrate that the deactivation was mainly due to the firm adsorption of oxides on the acid sites.

关 键 词：ZEOLITE 1-DODECENE ALKYLATION OXIDES DEACTIVATION 

分 类 号：TQ203.2[化学工程—有机化工]