硅酸及其盐的研究(Ⅺ)--单硅酸胶凝作用的温度效应和活化能

高等学校化学学报 ›› 1980, Vol. 1 ›› Issue (2): 31.

硅酸及其盐的研究(Ⅺ)--单硅酸胶凝作用的温度效应和活化能

陈荣三, 张雪琴, 王伯康, 戴安邦

南京大学络合物化学研究所

收稿日期:1980-03-18 出版日期:1980-12-24 发布日期:1980-12-24

STUDIES ON SILLICIC ACID AND ITS SALTS--Ⅺ--TEMPERATURE EFFECT ON AND ACTIVATION ENERGY OF THE GELATION PROCESS OF MONO-SILICIC ACID

Chen Rongsan, Zhang Xueqin, Wang Baikang, Dai Anbang(Tai An-pong)

Coordination Chemistry Institute, Nanjing University

Received:1980-03-18 Online:1980-12-24 Published:1980-12-24

摘要/Abstract

摘要： 用H₃PO₄、HAc和HCl为胶凝剂,在较广pH范围内,研究0°、20°、30°、40°、50°和70℃等不同温度对单硅酸胶凝作用的影响,并求出活化能。所得结果表明:活化能随胶凝剂的种类和硅酸溶液的pH不同而不同。但也发现硅酸浓度不同时,活化能也有所不同。若总盐浓度恒定,则活化能不变。用硅酸聚合理论的有关概念,对所得结果作了解释。

Abstract: Using H₃PO₄,HAc and HCl as gelating agents,in a wide range of pH,temperature effect on the rate of gelation of silicic acid was studied at 0°,20°,30°,40°,50°,and 70°.Activation energy of gelation was obtained therefrom.The results indicated that the activation energy varied with the kind of gelating agents used and pHof the solution.It was found also that concentration of silicic acid had an effect on the activation energy of gelation,however,when the total salt concentration of the solution maintained constant,the activation energy would not change with the concentration of the acid.All these findings had been well explained by the theory of polymerization of silicic acid proposed previously.

TrendMD:

陈荣三, 张雪琴, 王伯康, 戴安邦. 硅酸及其盐的研究(Ⅺ)--单硅酸胶凝作用的温度效应和活化能. 高等学校化学学报, 1980, 1(2): 31.

Chen Rongsan, Zhang Xueqin, Wang Baikang, Dai Anbang(Tai An-pong) . STUDIES ON SILLICIC ACID AND ITS SALTS--Ⅺ--TEMPERATURE EFFECT ON AND ACTIVATION ENERGY OF THE GELATION PROCESS OF MONO-SILICIC ACID. Chem. J. Chinese Universities, 1980, 1(2): 31.