固体酸SO_(4)^(2-)-/ZrO_(2)-γ-Al_(2)O_(3)的制备及其催化合成癸二酸二辛酯的研究  

Preparation of SO_(4)^(2-)/ZrO_(2)-γ-Al_(2)O_(3)Solid Acid and its Catalytic Activity in Synthesis of Dioctyl Sebacate

作　　者：张兴福 贾太轩[2] 梁寒 ZHANG Xingfu;JIA Taixuan;LIANG Han(Kaifeng Ruihong Chemical Co.,Ltd.,Kaifeng Henan 475000,China;College of Chemistry&Environmental Engineering,Anyang Institute of Technology,Anyang Henan 455000,China)

机构地区：[1]开封市瑞泓化工有限公司,河南开封475000 [2]安阳工学院化学与环境工程学院,河南安阳455000

出　　处：《江西化工》2024年第2期53-57,共5页Jiangxi Chemical Industry

基　　金：国家自然科学基金项目(5220020929);河南省中央引导地方科技发展专项跨区域研发合作项目(Z20221343016);安阳市重大科技专项计划项目(2022A02GX008)。

摘　　要：本研究采用沉淀-浸渍法制备了SO_(4)^(2-)/ZrO_(2)-γ-Al_(2)O_(3)固体酸催化剂,以癸二酸和异辛醇的酯化反应为探针反应,确定了SO_(4)^(2-)/ZrO_(2)-γ-Al_(2)O_(3)固体酸催化剂的最佳制备条件。实验分别考察了焙烧温度、焙烧时间、硫酸浸渍浓度、硫酸浸渍时间、陈化温度对催化活性的影响,并进一步考察了催化剂的循环使用性能。结果表明:焙烧温度为600℃、焙烧时间为5 h、硫酸浸渍浓度为0.6 mol/L、硫酸浸渍时间为9 h、陈化温度为-20℃时,制备出的SO_(4)^(2-)/ZrO_(2)-γ-Al_(2)O_(3)固体酸催化剂具有较好的催化活性,癸二酸的酯化率可以达到99.66%,催化剂循环使用5次后,酯化率降至90.54%。SO_(4)^(2-)/ZrO_(2)-γ-Al_(2)O_(3) solid acid catalyst was prepared by precipitation-impregnation method.The liquid phase esterification of sebacic acid and isooctyl alcohol was performed to confirm the optimal conditions of preparation.The results show that the optimum preparation conditions for solid acid catalyst through precipitation-impregnation method are calcination temperature is 600℃,the calcination time is 5 h,the sulfuric acid impregnation concentration is 0.6 mol/l,the sulfuric acid impregnation time is 9 h,and the aging temperature is-20℃.The conversion of sebacic acid amounts to 99.66%,and still remains 90.54%after recycling 5 times at the optimum conditions.

关 键 词：沉淀-浸渍法 SO_(4)^(2-)/ZrO_(2)-γ-Al_(2)O_(3) 酯化 催化剂 癸二酸二辛酯 

分 类 号：TQ414[化学工程]