Production of linear alkylbenzene over Ce containing Beta zeolites

doi:10.1016/j.cjche.2023.11.007

中国化学工程学报 ›› 2024, Vol. 67 ›› Issue (3): 220-227.DOI: 10.1016/j.cjche.2023.11.007

Production of linear alkylbenzene over Ce containing Beta zeolites

Shiqi Zhang^1,2, Shengzhi Gan^1,2, Baoyu Liu^1,2, Jinxiang Dong^1,2

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

收稿日期:2023-06-22 修回日期:2023-11-15 出版日期:2024-03-28 发布日期:2024-06-01
通讯作者: Baoyu Liu,E-mail address:baoyu.liu@gdut.edu.cn.
基金资助:
This work was 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).

Production of linear alkylbenzene over Ce containing Beta zeolites

Shiqi Zhang^1,2, Shengzhi Gan^1,2, Baoyu Liu^1,2, Jinxiang Dong^1,2

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

Received:2023-06-22 Revised:2023-11-15 Online:2024-03-28 Published:2024-06-01
Contact: Baoyu Liu,E-mail address:baoyu.liu@gdut.edu.cn.
Supported by:
This work was 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/Abstract

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

Abstract: 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.

Key words: Beta zeolites, Catalysis, Alkylation, Long-chain olefins

Shiqi Zhang, Shengzhi Gan, Baoyu Liu, Jinxiang Dong. Production of linear alkylbenzene over Ce containing Beta zeolites[J]. 中国化学工程学报, 2024, 67(3): 220-227.

Shiqi Zhang, Shengzhi Gan, Baoyu Liu, Jinxiang Dong. Production of linear alkylbenzene over Ce containing Beta zeolites[J]. Chinese Journal of Chemical Engineering, 2024, 67(3): 220-227.

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Production of linear alkylbenzene over Ce containing Beta zeolites

Production of linear alkylbenzene over Ce containing Beta zeolites

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