Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (1): 9-13.

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Dehydration of 2-(4′-Ethylbenzoyl)-benzoic Acid to 2-Ethylanthra-quinone over Hβ Zeolite Modified with Organic Acids

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

  1. 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:2009-01-25 Online:2009-01-25 Published:2012-10-17

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Abstract: Hβ zeolite was modified with seven organic acids. Their catalytic perform ance in dehydration of 2-(4′-ethylbenzoyl)-benzoic acid ( BEA ) to 2-ethylanthraquinone (2-EAQ) was studied. Hβ zeolites modified with cit ric acid (Hβ-c), tartaric acid (Hβ-t), malic acid (Hβ-m), and propanedioic acid (Hβ-p) showed high catalytic activity. The BEA conversion and 2-EAQ sel ectivity were both up to 95.0%. A suitable amount of acid sites with proper aci d strength is needed for the reaction. Excess or deficiency of concentration and strength of acid sites would result in dehydration between molecules or lower the catalyst activity.

Key words: Hβ zeolite, organic acid, modification, 2-(4′-ethylbenzoyl)-benzoic acid, dehydration, 2-ethylanthraquinone