Studies of the Catalytic Activity and Deactivation of Calcined Layered Double Hydroxides in the Reaction of Ethanol with Propylene Oxide

Chemical Research in Chinese Universities ›› 2002, Vol. 18 ›› Issue (2): 192-195.

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Studies of the Catalytic Activity and Deactivation of Calcined Layered Double Hydroxides in the Reaction of Ethanol with Propylene Oxide

JIAO Qing-ze¹, ZHAO Yun¹, ZHANG Yi-qing¹, DUAN Xue¹, Evans D. G.¹, ZHOU Zi-niu²

1. The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Eduction, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
2. Yixing Auxiliary Chemicals Plant, Jiangsu 214262, P. R. China

Received:2001-01-03 Online:2002-04-24 Published:2011-08-04
Supported by:
Supported by the SINOPEC(No.X599012).

Abstract

Abstract: The reaction of ethanol with propylene oxide over calcined layered double hydroxides(CLDH) was investigated. The results show that CLDH has a good activity and a good selectivity, but the activity and the selectivity of CLDH decrease when CLDH reforms LDH- the so called "memory effect". The influence of the "memory effect" on the CLDH returning to LDH was studied by the hydration reaction. It is shown that the "memory effect" is not complete, and the decreases of the Mg/Al molar ratio of LDH and the crystallite size due to the increase of the hydration reaction time result in the drop of the activity and the selectivity.

Key words: Ethanol, Propylene oxide, Calcined layered double hydroxide, "Memory effect", Hydration

JIAO Qing-ze, ZHAO Yun, ZHANG Yi-qing, DUAN Xue, Evans D. G., ZHOU Zi-niu. Studies of the Catalytic Activity and Deactivation of Calcined Layered Double Hydroxides in the Reaction of Ethanol with Propylene Oxide[J]. Chemical Research in Chinese Universities, 2002, 18(2): 192-195.

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Studies of the Catalytic Activity and Deactivation of Calcined Layered Double Hydroxides in the Reaction of Ethanol with Propylene Oxide

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