摘要
采用Pt/SiO2为催化剂,在高压反应器内进行了硝基苯催化加氢合成对氨基苯酚实验。研究了温度、压力、硫酸浓度、催化剂用量等因素对反应的影响,优化了反应条件,并考察了催化剂的反复使用对其催化活性的影响,最佳工艺条件:反应温度为85℃,17%稀硫酸,0.4MPa压力下,Pt/SiO2催化剂5g,产品纯度可达98%以上。
The preparation of p-aminophenol by catalyst hydrogenation of nitrobenzene on Pt/SiO2 catalyst in the high-pressure reactor was researched. Study on influencial factors such as reaction temperature, reaction pressure, the concentration of sulfuric acid, amount of catalyst. The optimal conditions were as follows: reaction temperature 85 ℃, hydrogen pressure 0.4 MPa , the concentration of sulfuric acid 17%, amount of Pt/SiO2 is 5 g, product purity is reached 98%.
出处
《河北化工》
2008年第7期10-11,13,共3页
Hebei Chemical Industry