高等学校化学学报

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (3): 439.

• 论文 • 上一篇    下一篇

云母钛脱水脱硫过程的动力学研究

周静红1, 肖文德1, 顾燕芳2, 古宏晨2, 胡黎明2   

  1. 1. 华东理工大学联合化学反应工程研究所, 上海, 200237;
    2. 华东理工大学国家超细粉末工程中心
  • 收稿日期:1996-04-02 出版日期:1997-03-24 发布日期:1997-03-24
  • 通讯作者: 周静红, 女, 25岁, 硕士, 助教.
  • 作者简介:周静红, 女, 25岁, 硕士, 助教.
  • 基金资助:

    国家自然科学基金

Kinetics of Dehydration and Desulfation Process of Titania Coated Mica

ZHOU Jing-Hong1, XIAO Wen-De1, GU Yan-Fang2, GU Hong-Chen2, HU Li-Ming2   

  1. 1. UNILAB Research Centre of Chemical Reactio, Engineering in East China University of Science a11d Technology, Shanghai, 200237;
    2. China University of Science and Technology, Shanghai
  • Received:1996-04-02 Online:1997-03-24 Published:1997-03-24

PDF (PC)

被引次数

3

摘要： 对强制水解硫酸钛制得的云母钛前驱体进行TG分析,利用Freeman－Carroll方法处理热重数据,得到云母钛热处理的动力学参数.脱水阶段:E=93.32kJ/mol,n=5.16,A=5.31×1O11min-1;脱硫阶段:E=149.25kJ/mol,n=5.13,A=2.75×1011min-1.相同条件下制得的水合氧化钛粉末的动力学参数表明,云母钛中水含氧化钛膜层的脱水、脱硫速率均慢于水合氧化钛粉末的脱水脱硫速率.

关键词: 云母钛, 水合二氧化钛, 脱水及脱硫过程, 反应速率

Abstract: Based on TGcurve, the Freeman-Carroll method was applied to calculate the kinetic parameters of the process of dehydration and desulfation of hydrous titanium oxide film on the titania-coated mica pearl pigments.As a result, the kinetic parameters were obtained.The dehydration period: E=93.32 kJ/mol, n=5.16, A=5.31×1011 min-1; desulfation period: E=l49.25 kJ/mol, n=5.13, A=2.75× 1011 min-1.Simultaneously, comparing with the kinetic parameters of the hydrous tiania powder obtained under the same condition indicated that both the dehydroation process and the desulfation process were more difficult in pigments than in powder.

Key words: Mica titania, Hydrated titania, Process of dehydration and desulfation, Reaction rate

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