N-乙基间甲苯胺的催化合成

The Catalytic Synthesis of N-Ethyl-m-toluidine

介绍以间甲苯胺和乙醇为原料 ,在铜锌铝氧化物催化剂上 ,在连续固定床反应器中合成N -乙基间甲苯胺。在常压 ,氢气气氛中 ,反应温度 2 40～ 2 70℃、醇 胺摩尔比 1 .2、进料空速 8～ 1 2h- 1条件下 ,间甲苯胺的转化率≥ 90 % ,生成N -乙基间甲苯胺的选择性为 90 %～ 95 %。

The catalytic synthesis of N-ethyl-m-toluidine from m-toluidine and ethanol is carried out continusly in a fixed-bed reactor with catalyst of copper, zinc and aluminium oxides. The reaction proceeds under the conditions of H 2 atmospherical pressure, temperature of 240-270℃, LHSV of 8-12 h -1 , and mole ratio of ethanol/toluidine is 1.2. The single pass conversion of m-toluidine is over 90%, and the selectivity to N-ethyl-m-toluidine is in the range of 90%～95%.