Pb-Ti复合醇盐的水解聚结过程

摘要/Abstract

摘要： 采用浊度法研究了Pb-Ti复合醇盐的水解聚结过程.发现该过程随水量和醇盐浓度的增大而加快,碱(NH₄OH)能够大大促进水解聚结反应,酸(HOAc)则在低浓度时起促进作用高浓度时起抑制作用.根据醇盐水解聚结的反应机理对以上结果作了解释.

关键词: 复合醇盐, PbTiO₃, 水解聚结, 浊度法

Abstract: The hydrolysis-condensation process of Pb-Ti complex alkoxide has been studiedby turbidimetry.It was found that increase in both the amount of water and alkoxide conce^n-tration accelerated the hydrolysis-condensation reaction. NH₄OH greatly promoted the hy-drolysis-condensation reaction,while HOAc showed a promotion effect at lower acid conce^n-tration,but a suppression effect at higher acid concentration.The results have been ex-plained in terms of hydrolysis-condensation reaction of alkoxide.

Key words: complex alkoxide, PbTiO₃, hydrolysis-condensation reaction, turbidimetry

齐利民, 马季铭, 程虎民, 赵振国. Pb-Ti复合醇盐的水解聚结过程[J]. 应用化学, 1995, 0(2): 1-4.

QiLimin, Ma Jiming, Cheng Humin, Zhao Zhenguo. Hydrolysis-Condensation of Pb-Ti Complex Alkoxide[J]. Chinese Journal of Applied Chemistry, 1995, 0(2): 1-4.

[1]	傅希贤, 单志兴, 肖坤林, 曾淑兰. 掺杂对PbTiO₃光催化活性的影响[J]. 应用化学, 1996, 0(6): 58-60.
[2]	王俊珍, 古凤才, 颜秀茹, 王建苹, 曾淑兰. 水溶性染料在PbTiO₃体系中的光催化降解[J]. 应用化学, 1995, 0(6): 29-32.

Pb-Ti复合醇盐的水解聚结过程

Hydrolysis-Condensation of Pb-Ti Complex Alkoxide

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