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›› 2015, Vol. 15 ›› Issue (2): 318-323.

• 材料工程专栏 • 上一篇    下一篇

Zr(SO4)2/SiO2催化剂的制备及其催化合成乙酸辛酯

叶佳义 陆平 华超   

  1. 中国科学院过程工程研究所 中国科学院过程工程研究所 中国科学院过程工程研究所分离工程与工程青年实验室
  • 收稿日期:2015-02-04 修回日期:2015-03-23 出版日期:2015-05-05 发布日期:2015-05-05
  • 通讯作者: 叶佳义

Preparation of Silica-supported Zirconium Sulfate and Its Catalysis in Esterification of Octyl Acetate

YE Jia-yi LU Ping HUA Chao,   

  1. Lab. Sep. Sci. & Eng., Inst. Process Eng., CAS Lab. Sep. Sci. & Eng., Inst. Process Eng., CAS Lab. Sep. Sci. & Eng., Inst. Process Eng., CAS
  • Received:2015-02-04 Revised:2015-03-23 Online:2015-05-05 Published:2015-05-05
  • Contact: YE Jia-yi

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摘要： 采用Stober法制备SiO2载体，在不同条件下采用浸渍法制备Zr(SO4)2/SiO2催化剂，并用于合成乙酸辛酯，对催化剂进行了表征，对反应条件进行了优化. 结果表明，在焙烧温度250℃及Zr(SO4)2负载量20%条件下所制催化剂最稳定且Zr(SO4)2在SiO2载体中分散最均匀，250℃下焙烧3 h催化效果最好. 最佳反应条件为催化剂用量为辛醇质量的3%，乙酸与辛醇摩尔比1.2:1，温度120℃，时间3 h，此时辛醇转化率达97.82%，反应选择性达92.53%.

关键词: SiO2, Zr(SO4)2, 催化剂, 酯化反应, 乙酸辛酯

Abstract: A SiO2 carrier was prepared by Stober method, and Zr(SO4)2/SiO2 catalyst under different loadings and calcination temperatures prepared by impregnation method, which was used for synthesis of octyl acetate. The catalyst was characterized. The results showed that Zr(SO4)2 dispersed well on the surface of SiO2 at the calcinations temperature of 250℃ with 20% loading in Zr(SO4)2/SiO2. Under the optimum reaction conditions of Zr(SO4)2/SiO2 with 20% loading, calcining at 250℃ for 3 h, reaction temperature 120℃ and reaction time 3 h, n-octanol conversion rate reached 97.82%, and the selectivity to octyl acetate was 92.53%.

Key words: silica, zirconium sulfate, catalyst, esterification, octyl acetate

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