一种改进的对硝基苯乙酮制备工艺  

INVESTIGATION OF AN IMPROVED PROCESSING OF 4-NITROACETOPHENONE

作　　者：项东升[1] 孙开进[1,2] 徐杰武 周红军 

机构地区：[1]盐城工业职业技术学院化学工程系,江苏盐城224005 [2]江苏天宇检测技术有限公司,江苏盐城224005 [3]阜宁县安勤化学有限公司,江苏阜宁224403

出　　处：《精细石油化工》2016年第3期63-66,共4页Speciality Petrochemicals

基　　金：2015年江苏省政策引导类计划(产学研合作)--前瞻性联合研究项目(项目编号BY2015059-02)

摘　　要：研究了以纯氧(O_2)为氧化剂,硅胶吸附的水合三氯化铈-碘化钠(CeCl_3·7H_2O-NaI)为催化剂,常压催化氧化对硝基乙苯制备硝基苯乙酮的新工艺。结果表明,在封闭体系中,6%(质量分数)Ce/SiO_2,反应温度(135±1)℃,反应时间6.0h,对硝基乙苯的转化率为73.6%,对硝基苯乙酮的选择性为88.4%,对硝基乙苯的损失率为1.8%,催化剂(SiO_2-Supported CeCl_3·7H_2O-NaI)至少可重复利用3次。新工艺具有常压氧化、产品收率高、减少尾气等优点,适合工业化生产。The new preparation process of 4-nitroethylbenzene to 4-nitroacetophenone was studied,in which O2 served as oxidation and SiO2-Supported CeCl3·7H2O-NaI as catalyst,respectively.The experiment results under closed environment condition reveals that with settled reaction parameter（Ce/SiO2=6%,（135±1）℃,6h）,the conversion rate of 4-nitroethylbenze was 73.6%,the selectivity for4-nitroacetophenone was 88.4%,and the loss ratio of 4-nitroacetophenone was 1.8.Furthermore,the SiO2-Supported CeCl3·7H2O-NaI catalyst can be recycled.Due to the advantage of atmospheric oxidation,high yield and less exhaust,the new process is promising for industrialized 4-nitroacetophenone production.

关 键 词：对硝基乙苯 氧化 对硝基苯乙酮 

分 类 号：TQ246.15[化学工程—有机化工]