Catalyzed synthesis of 2-(4'-ethylbenzoyl)-benzoic acid by supporting Cs2.5H0.5PW12O40 on silica gel

Guo Dong; Wan Yazhen; Zhang Wenhui; Zhang Yanwu

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Catalyzed synthesis of 2-(4'-ethylbenzoyl)-benzoic acid by supporting Cs2.5H0.5PW12O40 on silica gel

Guo Dong #,Wan Yazhen *,Zhang Wenhui,Zhang Yanwu

School of Chemical Engineering and Energy, Zhengzhou University, ZhengZhou 450001

*Correspondence author

#Submitted by

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Funding: National Nature Science Foundation of China（No. No. 21574119）, Outstanding Young Talent Research Fund of Zhengzhou University（No. No. 1421324069)）

Opened online:10 November 2016

Accepted by: none

Citation: Guo Dong,Wan Yazhen,Zhang Wenhui.Catalyzed synthesis of 2-(4'-ethylbenzoyl)-benzoic acid by supporting Cs2.5H0.5PW12O40 on silica gel[OL]. [10 November 2016] http://en.paper.edu.cn/en_releasepaper/content/4706802

Supported Cs2.5H0.5PW12O40 were used as the catalyst for Friede-Crafts acylation of phthalic anhydride with ethyl benzene to 2-(4′-ethylbenzoyl)benzoic acid (BEA). The catalysis of silica gel (SG） loaded with different amounts of Cs2.5H0.5PW12O40 (varying 5 wt%-30 wt%) were prepared through a simple and effective impregnation method. The samples were characterized by XRD, FT-IR, BET, Hammett indicator and ammonia adsorption-desorption, and revealed that Cs2.5H0.5PW12O40 dispersed highly on the surface of SG. The catalytic performance of the samples in the synthesis of BEA was also studied. The results indicate that the sample with 10 wt% Cs2.5H0.5PW12O40/SG shows the highest catalytic activity, and the best yield of BEA reached 62.6% when the reaction parameters such as effect of reaction temperature, effect of reaction time, molar ratio of phthalic anhydride to ethyl benzene were under optimized conditions. The reusability tests of the catalysts show that the catalysts can be used several times without significant loss in activity.

Keywords: Catalytic chemistry; 2-(4'-ethylbenzoyl)-benzoic acid; Silica gel; Supporting;

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