Abstract：The synthesis of piperazine via amination reaction was conducted in a fixed bed reactor using ethylene glycol as raw material. The active components and supports of the catalyst were screened. The effects of reaction temperature, reaction pressure, liquid hourly space velocity of ethylene glycol, molar ratio of ammonia to glycol and molar ratio of hydrogen to glycol on amination reaction were systemically investigated. The results indicated that Ni-Cu bimetal composite was the appropriate active component and mordenite zeolite as support presented higher selectivity for the synthesis of piperazine. Under the conditions of reaction temperature of 230 ℃, reaction pressure of 10 MPa, liquid hourly space velocity of ethylene glycol 0.2 h-1, molar ratio of ammonia to glycol 30, and molar ratio of hydrogen to glycol 1, amination reaction proceeded smoothly with the glycol conversion of 42% and piperazine selectivity of 75%.
Yang Zhen,Gong Feixiang,Qi Yonghong. Catalyst and Amination Process for the Synthesis of Piperazine from Ethylene Glycol[J]. 化学反应工程与工艺, 2016, 32(6): 570-575.
