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

Shiyong Xing; Yan Cui; Tiefeng Wang; Jinwei He; Minghan Han

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

Full Length Article | Updated：2026-01-06

- Elucidating the effect of oxides on the zeolite catalyzed alkylation of benzene with 1-dodecene
- Chinese Journal of Chemical Engineering Vol. 56, Issue 4, Pages: 126-135(2023)
- Affiliations：
  
  1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University,Beijing,China,100084
  2. Petrochemical Research Institute, PetroChina Company Limited,Beijing,China,100195
  3. Henan Energy and Chemical Industry Group Company Limited,Zhengzhou,China,450046
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2023
- Accepted：
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Shiyong Xing, Yan Cui, Tiefeng Wang, Jinwei He, Minghan Han. Elucidating the effect of oxides on the zeolite catalyzed alkylation of benzene with 1-dodecene[J]. Chinese Journal of Chemical Engineering, 2023, 56(4): 126-135.
DOI：

Shiyong Xing, Yan Cui, Tiefeng Wang, Jinwei He, Minghan Han. Elucidating the effect of oxides on the zeolite catalyzed alkylation of benzene with 1-dodecene[J]. Chinese Journal of Chemical Engineering, 2023, 56(4): 126-135. DOI：

摘要

Abstract

In the present work

the effect of oxides on the alkylation of benzene with 1-dodecene was comprehensively investigated over MCM-49

-heptanol

-heptaldehyde and

-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.

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