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Chemcial Industry and Engineering 2001, Vol. 18 Issue (3) :141-145    DOI:
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Study on Catalyzed Cyclization of Ethylenediamine in Gas-Solid Phase
WANG Xiao ji,CHEN Li gone,ZHANG Xiao ru,WANG Dong hua (School of Chemical Engineering,Tianjin University,Tianjin 300072,China))
(School of Chemical Engineering,Tianjin University,Tianjin 300072,China)

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Abstract This paper concerned about the study on manufacture routes for piperazine and triethylenediamine from ethylenediamine in fixed bed reactor.A series of catalysts were prepared and examined.The zeolite HZSM-5 with KCl modified was found to be the best one.Furthermore,the reaction parameters were optimized.The temperature is about 340℃,the concentration of ethylenediamine is 50%,and the input speed is 0 2ml/min.Under above condition,the conversion of ethylenediamine is above 93%.The selectivity of the reaction is up to 93%.
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Received 2001-05-15; published 2001-05-15
Cite this article:   
WANG Xiao ji,CHEN Li gone,ZHANG Xiao ru,WANG Dong hua .Study on Catalyzed Cyclization of Ethylenediamine in Gas-Solid Phase[J]  Chemcial Industry and Engineering, 2001,V18(3): 141-145
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