Dehydration of 2-(4′-Ethylbenzoyl)benzoic Acid to 2-Ethylanthra-quinone over H-β Zeolite Impregnated with Citric Acid

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (8): 701-704.

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Dehydration of 2-(4′-Ethylbenzoyl)benzoic Acid to 2-Ethylanthra-quinone over H-β Zeolite Impregnated with Citric Acid

ZHAI Lingjuan1, LIU Min1, DONG Xiangmei1, SONG Chunshan1,2, GUO Xinwen1*

1 State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, Liaoning, China; 2 Department of Energy and Geo-Environmental Engineering, Pennsylvania State University, Pennsylvania 16802, USA

Received:2008-08-25 Online:2008-08-25 Published:2012-06-20

Abstract

Abstract: H-β zeolite catalyst samples were prepared by impregnation with citric acid and were characterized byX-raydiffraction,X-rayfluorescence, Fourier transform infrared spectroscopy, nuclear magnetic resonance, and temperature-programmed desorption. The catalytic performance of the catalyst samples for dehydration of 2-(4′-ethylbenzoyl)benzoic acid (EBA) to 2-ethylanthraquinone (EAQ) was measured. The results showed that the impregnated samples remained the topological structure of H-β zeolite. There was more residual extra-framework aluminum and citric acid on the unwashed sample after impregnation. The sample washed with deionized water after impregnation exhibited high activity and selectivity in the reaction of EBA dehydration. The conversion of EBA was 96.5%, and the selectivity for EAQ was 96.0%

Key words: H-β zeolite, citric acid, impregnation, 2-(4′-ethylbenzoyl)benzoic acid, dehydration, 2-ethylanthraquinone

ZHAI Lingjuan;LIU Min;DONG Xiangmei;SONG Chunshan;GUO Xinwen*. Dehydration of 2-(4′-Ethylbenzoyl)benzoic Acid to 2-Ethylanthra-quinone over H-β Zeolite Impregnated with Citric Acid[J]. Chinese Journal of Catalysis, 2008, 29(8): 701-704.

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Dehydration of 2-(4′-Ethylbenzoyl)benzoic Acid to 2-Ethylanthra-quinone over H-β Zeolite Impregnated with Citric Acid

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