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��ѧ��ҵ�빤�� 2001, Vol. 18 Issue (1) :34-39    DOI:
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Synthesis of Triethylenediamine from ��-Hydroxyethyl Piperazine
CHEN Li gong, GU Xian\|feng, XU Zheng\|shuang, LI Yang, BAI Guo\|yi (School of Chemical Engineering,Tianjing University, Tianjing\ 300072,China)
(School of Chemical Engineering,Tianjing University, Tianjing\ 300072,China

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Abstract�� The reaction of intromolecular dehydration of crude hydroxyethyl\|piperzine to synthesis triethylenediamine was studied in this paper. A series of catalysts were chosen,prepared and examined. Reaction parameters including influencing temperature,space velocity,and concentration were optimize. Thus,when SrHOP\-4 containing Ba 2+ was empolyed as catalyst,the concentration of crude hydroxyethyl\|piperazine was 60%,the space velocity of raw material gas was 2 000 h -1 and under 360��,the conversation of the material reached up to 100% and the selectivity of triethylenediamine is above 90%. After distillation and recrystallization of the obtained reaction mixture the purity was over 99%.
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Received 2001-01-15; published 2001-01-15
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������,���շ�,����˫,����,�׹���.����һ�������ϳ�����ϩ����[J].  ��ѧ��ҵ�빤��, 2001,18(1): 34-39
CHEN Li gong, GU Xian\|feng, XU Zheng\|shuang, LI Yang, BAI Guo\|yi .Synthesis of Triethylenediamine from ��-Hydroxyethyl Piperazine[J].  Chemcial Industry and Engineering, 2001,18(1): 34-39
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