催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (3): 195-196.

• 研究快讯 •    下一篇

乙醇热法制备纳米二氧化钛及其对酯交换反应合成碳酸二丁酯的催化性能

冯秀丽1,2,王庆印1,王公应1,邱发礼1   

  1. 1 中国科学院成都有机化学研究所, 四川成都 610041; 2 中国科学院研究生院, 北京 100049
  • 收稿日期:2006-03-25 出版日期:2006-03-25 发布日期:1984-10-26

Preparation of Nano-TiO2 by Ethanol-Thermal Method and Its Catalytic Performance for Synthesis of Dibutyl Carbonate by Transesterification

FENG Xiuli1,2, WANG Qingying1, WANG Gongying1*, QIU Fali1   

  1. 1 Chengdu Institute of Organic Chemistry, The Chinese Academy of Sciences, Chengdu 610041, Sichuan, China; 2 Graduate School of The Chinese Academy of Sciences, Beijing 100049, China
  • Received:2006-03-25 Online:2006-03-25 Published:1984-10-26

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1040

被引次数

5

摘要： The preparation of nano-TiO2 powder by the alcohol-thermal method at atmospheric pressure using ethanol as the solvent, H2TiO3 as the precursor, and KOH, NaOH or NH3·H2O as the mineralizer has been presented. XRD result showed that the structure of TiO2 is anatase, and with the increase of mineralizer alkalinity, the average diameter of TiO2 becomes smaller, and the crystallinity of TiO2 becomes higher. The diameter and the crystallinity of TiO2 affect the catalytic activity of TiO2 for the synthesis of dibutyl carbonate (DBC) from dimethyl carbonate (DMC) and butyl alcohol. The anatase TiO2 obtained from KOH exhibits high catalytic activity, giving 61.9% conversion of DMC, 100% selectivity for DBC, and 61.9% yield of DBC. The conversion of DMC, selectivity and yield of DBC remain almost unchanged through four reuses.

关键词: 碳酸二甲酯, 碳酸二丁酯, 酯交换, 二氧化钛, 乙醇热法

Abstract: The preparation of nano-TiO2 powder by the alcohol-thermal method at atmospheric pressure using ethanol as the solvent, H2TiO3 as the precursor, and KOH, NaOH or NH3·H2O as the mineralizer has been presented. XRD result showed that the structure of TiO2 is anatase, and with the increase of mineralizer alkalinity, the average diameter of TiO2 becomes smaller, and the crystallinity of TiO2 becomes higher. The diameter and the crystallinity of TiO2 affect the catalytic activity of TiO2 for the synthesis of dibutyl carbonate (DBC) from dimethyl carbonate (DMC) and butyl alcohol. The anatase TiO2 obtained from KOH exhibits high catalytic activity, giving 61.9% conversion of DMC, 100% selectivity for DBC, and 61.9% yield of DBC. The conversion of DMC, selectivity and yield of DBC remain almost unchanged through four reuses.

Key words: dimethyl carbonate, dibutyl carbonate, transesterification, titanium dioxide, ethanol-thermal method