摘要
以负载型非晶态合金NiB/C为催化剂、硫酸锌溶液为酸性介质进行硝基苯催化加氢制备对氨基苯酚的反应。考察了反应温度、反应压力、反应时间、NiB/C催化剂加入质量和硫酸锌加入质量对反应的影响,得到了对氨基苯酚取得较高选择性的反应条件。通过建立的五因素四水平的正交实验,确定了较佳实验方案:反应温度为120℃,反应压力为0.1MPa,反应时间为3h,催化剂加入质量为3g,硫酸锌加入质量为4g。分析结果显示,硝基苯的转化率达86.78%,对氨基苯酚和苯胺的选择性分别为15.62%和76.02%。
Supported amorphous alloy NiB/C was used as catalyst,and zinc sulfate solution was used as acidic medium in the preparation of catalytic hydrogenation of nitrobenzene to p-aminophenol.The effect of reaction temperature,reaction pressure,reaction time,mass of NiB/C catalyst and zinc sulfate on the reaction were studied,the range of reaction conditions of higher selectivity of p-aminophenol was obtained.The better experimental program was determined through the establishment of the orthogonal experiment which has five factors and four levels： reaction temperature is 120 ℃,reaction pressure is 0.1 MPa,reaction time is 3 h,the catalyst addition is 3 g,zinc sulfate addition is 4 g.The results show that the conversion rate of nitrobenzene is 86.78%,the selectivity of p-aminophenol and aniline are 15.62% and 76.02% respectively.
出处
《石油化工高等学校学报》
CAS
2011年第1期12-17,共6页
Journal of Petrochemical Universities
基金
辽宁省教育厅科学技术研究项目(20060501)
