摘要
滴加TiCl_4于饱和KHCO_3溶液中,并加入盐酸胍,可得到实验式为(CN_3H_6)_2[TiO(CO_3)_2]·4/5H_2O的白色微晶。由红外分析得知O^(2-)和CO_3^(2-)是以桥式与Ti(IV)键合的。产物在210℃分解为TiO_2、(CN_3H_5)_2·H_2CO_3、CO_2和H_2O;热分解反应级数n=1.2。活化能E=214.1KJ·mol^(-1)在600℃灼烧1小时,可得纯锐钛型TiO_2。
Dropped TICl_4 solution into the saturated KHCO_3 solution and then added guanidine hydrochloride into it,thus white and fine(CN_3H_6)_2[TiO(CO_3)_2]·4/5H_2O complex fine crystals formed.The IR spectrum of the complex shows that O^(2-)and CO_3^(2-) are as bridging groups linking with the Ti(IV).The complex decomposes at 210℃,forming TiO_2,[(H_2N)_2C=NH]_2·H_2CO_3,CO_2 and H_2O and having 1.2 of reaction order and 214.1 KJ.mol^(-1) of decomposition activation energy.Pure anatase TiO_2 was obtained by heating the complex at 600℃ for 1 hour.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1990年第1期128-131,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
钛碳酸胍
钛碳酸盐
配合物
结构
guanidine titanyl carbonate
synthesis
structure
thermal decomposition
