甲苯液相选择性氧化制苯甲醛的工艺研究  

Study on Liquid-phase Selective Oxidation of Toluene to Benzaldehyde

作　　者：邢跃军[1] 陈韶辉[1] 王仲霞[2] 王志侃 XING Yue-jun;CHENShao-hui;WANG Zhong-xia;WANG Zhi-kan(Nanjing Research Institute of SINOPEC Yangzi Petrochemical Company Limited,Nanjing 210048,China;Shijiazhuang Refining&Chemical Company,SINOPEC,Shijiazhuang 050099,China)

机构地区：[1]中国石化扬子石油化工有限公司南京研究院,江苏南京210048 [2]中国石化石家庄炼化分公司,河北石家庄050099

出　　处：《精细化工中间体》2020年第2期54-57,共4页Fine Chemical Intermediates

基　　金：中国石油化工集团有限公司科研攻关项目(412061)。

摘　　要：甲苯与空气液相选择性氧化是一条制备苯甲醛的绿色化生产路线。建立了一套甲苯液相空气氧化的连续化试验装置,在工业装置操作条件下,通过加入含氮杂环化合物助催化剂,提高了甲苯转化率和苯甲醛选择性。研究结果表明,加入苯并咪唑助催化剂100 mg·kg^-1后,甲苯转化率为17.3%,苯甲醛选择性为6.6%。The liquid-phase selective oxidation of toluene with air is a green production route for the preparation of benzaldehyde. A set of continuous pilot equipment for liquid-phase air oxidation of toluene was set up. Under the operating conditions of industrial plant, the conversion rate of toluene and the selectivity of benzaldehyde were improved by adding nitrogen containing heterocyclic compound as co-catalyst. The results showed that the conversion of toluene was 17.3% and the selectivity of benzaldehyde was 6.6% when benzimidazole co-catalyst was added at a level of 100 mg·kg^-1.

关 键 词：甲苯 苯甲醛 苯甲酸 选择性氧化 

分 类 号：TQ244.1[化学工程—有机化工] TQ241.12