摘要
硝酸铁溶于氨水得到Fe(OH)3后再用硫酸浸泡,经过滤、焙烧制得固体超强酸催化剂Fe2O3/SO42-。以固体超强酸Fe2O3/SO42-为催化剂、苯和硝酸为原料合成硝基苯。通过正交设计考察了不同工艺条件下苯硝化反应的收率影响因素,最佳反应条件为:催化剂活化温度500℃,反应温度75℃,n(硝酸)∶n(苯)=2,m(苯)∶m(催化剂)=20,反应时间3 h,收率达83.9%。
Fe2O3/SO4^2- solid super acid was obtained by dissolving iron nitrate in ammonia, dipping the resultant iron hydroxide in sulfttric acid, filtration and calcination. Nitrobenzene was synthesized from benzene and nitric acid over Fe2O3/SO4^2- solid super acid. The yield-influencing factors were investigated by orthogonal experiment and optimum reaction condition was obtained as follows： catalyst activation temperature 500℃, reaction temperature 75℃, reaction time 3 h, n （nitric acid） ： n （benzene） =2.0, w（benzene） ： w（catalyst） = 20. Nitrobenzene yield of 83.9% was obtained under the optimum reaction condition.
出处
《工业催化》
CAS
2006年第2期31-34,共4页
Industrial Catalysis
基金
浙江省教育厅科研计划项目(20040109)
关键词
固体超强酸催化剂
硝基苯
硝化
solid super acid catalyst
nitrobenzene
nitration
