固体超强酸SO_(4)^(2-)/SiO^(2-)ZrO_(2)催化合成季戊四醇正辛酸酯的研究  

Catalytic synthesis of pentaerythritol n-octanoate over solid super acid SO_(4)^(2-)/SiO^(2-)ZrO_(2)

作　　者：周甲丁 贡肖 王志德 宋昌盛 高琦 任庆功[1] ZHOU Jia-ding;GONG Xiao;WANG Zhi-de;SONG Chang-sheng;GAO Qi;REN Qing-gong(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Comprehensive Technical Service Center of Taicang Customs House,Taicang 215400,China;Jiangsu Gaoke Petrochemical Co.,Ltd.,Yixing 214200,China)

机构地区：[1]常州大学石油化工学院,江苏常州213164 [2]太仓海关综合技术服务中心,江苏太仓215400 [3]江苏高科石化股份有限公司,江苏宜兴214200

出　　处：《现代化工》2022年第3期183-188,共6页Modern Chemical Industry

基　　金：江苏省研究生科研与实践创新计划项目(KYCX20-2565);宜兴市基础设施-重大企业研发机构项目(2018);海关总署科研项目(2019HK073)。

摘　　要：通过浸渍法在实验室条件下合成了SO_(4)^(2-)/SiO^(2-)ZrO_(2)催化剂,并通过TG、XRD、FT-IR、Hammett指示剂、SEM、TEM、BET等对其进行表征。以SO_(4)^(2-)/SiO^(2-)ZrO_(2)为催化剂催化合成季戊四醇正辛酸酯,经过工艺优化后得到最佳反应条件:反应温度为200℃、正辛酸和季戊四醇的摩尔比为4.2:1、催化剂质量为进料质量的3%、反应时间6 h,反应结束后酯化率高于98%。催化剂重复使用5次后酯化率仍达96.30%。SO_(4)^(2-)/SiO^(2-)ZrO_(2) catalyst is synthesized by impregnation method in laboratory,and characterized by TG,XRD,FT-IR,Hammett indicator,SEM and TEMBET.Pentaerythritol n-octanoate ester is synthesized by using SO_(4)^(2-)/SiO^(2-)ZrO_(2) as catalyst.The optimum reaction conditions are determined as follows:reaction temperature is at 200℃,the molar ratio of n-octanoate to pentaerythritol is 4.2:1,catalyst mass is 3%of feed mass,and the reaction lasts for 6 h.The esterification rate is higher than 98%after the reaction ends.The esterification rate still reaches 96.30%after the catalyst has been reused for 5 times.

关 键 词：固体酸催化剂 合成润滑油 季戊四醇正辛酸酯 催化作用 酯化 多相反应 

分 类 号：TQ666[化学工程]