文献类型：期刊文献

中文题名：云母钛脱水脱硫过程的动力学研究

英文题名：Kinetics of Dehydration and Desulfation Process of Titania Coated Mica

作者：周静红[1];肖文德[1];顾燕芳[2];古宏晨[2];胡黎明[2]

机构：[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

年份：1997

卷号：18

期号：3

起止页码：439

中文期刊名：高等学校化学学报

外文期刊名：Chemical Journal of Chinese Universities

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：云母钛;水合二氧化钛;脱水;脱硫;转相;颜料

外文关键词：Mica titania,Hydrated titania,Process of dehydration and desulfation, Reaction rate

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．
Based on TG curve, 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. 31×10ll 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'