合成高纯对甲苯磺酸新工艺  

New Technology on Synthesizing High Purification Toluene-P-Sulfonic Acid

作　　者：王晓立[1] 田桂芝[1] 孟兆海 

机构地区：[1]抚顺职业技术学院,辽宁抚顺113006 [2]抚顺市化工研究设计院,辽宁抚顺113006

出　　处：《当代化工》2002年第4期206-208,共3页Contemporary Chemical Industry

基　　金：辽宁省教育厅科研项目 (2 0 3 410 88)

摘　　要：研究了一种以硫酸为磺化剂磺化甲苯 ,制备高纯度对甲苯磺酸的新工艺。该工艺通过加入助剂 ,使合成反应与产品精制同步完成。实验考查了物料配比、反应时间、磺化剂滴加时间和助剂加入量等因素对产品纯度及收率的影响。确定了合成工艺的最佳条件为甲苯∶硫酸为 1 .5∶1 ,反应时间为 2h,磺化剂的滴加时间为 3 0min ,助剂加入量为总原料量的 1 0 %。该工艺可使产品的纯度达到 98% ,收率大于 65 %。A new technology of Preparing synthesizing high purity toluene-p-sulfonic acid is researched, the sulphuric acid is used as sulfonating agent which sulfonated toluene to produce the above product. In the process synthesizing reaction and product refining are simultaneously completed by adding accessory ingredient. The effect of the molar ratio of raw material, reaction time, titration time of sulfonating agent and adding quantity of accessory ingredient on the purity and yield of the peoduct are observed. The aptinaging conditions of synthesizing technology are determined, toluene: sulphuric acid=1.5∶1, reaction time is 2 hours, the time of adding sulfonating agent is 30 minutes, adding quantity of accessory ingredient is 10 % total quantity of raw material. The purity of product can reach 98 %, the yield of the product exceeds 65 %.

关 键 词：合成 高纯度 对甲苯磺酸 新工艺 甲苯 磺化 助剂 

分 类 号：TQ247.5[化学工程—有机化工]