Synthesis of Triethylenediamine from ��-Hydroxyethyl Piperazine

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

Cite this article:

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,V18(1): 34-39