摘要
以NaOH溶液快速沉淀CuCl2和AlCl3的混合溶液制备了催化剂CuO-Al2O3，当n（CuO）：n（Al2O3）=1：2时所得催化剂性能最好。在水中，以邻硝基甲苯为底物，考察了几种因素对反应的影响。较优的反应条件为：4．11g（30mmol）邻硝基甲苯，3．53g（60mmol）水合肼，0．45gCuO-Al2O3，80℃反应50min。在此条件下邻SO基苯胺的收率达到98％。在同样的条件下，CuO-Al2O3催化水合肼，几种还原芳香族硝基化合物得到相应的芳胺，收率90％～99％。
When the ratio of n（ CuO）/n（ Al2O3 ） in CuO-Al2O3 is 1：2 ,which was prepared by rapid precipitation from solution of CuCl2 and AlCl3 with sodium hydroxide, the CuO-Al2O3 has high catalytic activity. The effect of various factors in the process of reduction of o-nitrotoluene in water was investigated. The results show that under the conditions of 4.11 g （30 mmol） o-nitrotoluene,3.53 g （60 mmol） hydrazine hydrate,0.45 g CuO-Al2O3 ,reaction time is 50 min at 80℃ ,the yield of o-toluidine is 98%. Under the same conditions,a few of aromatic nitro compounds have becn reduced with 90% -99% yield to the cor- responding anilines with hydrazine hydrate in the presence of CuO-Al2O3.
出处
《应用化工》
CAS
CSCD
2006年第11期827-829,共3页
Applied Chemical Industry
基金
江苏省高新技术产业发展项目(JHB05-33)
关键词
水合肼
芳香族硝基化合物
还原
hydrazine hydrate
aromatic nitro compounds
reduction
