合成TS-1分子筛的结晶动力学及催化性能研究
发表时间：2025-06-03
点击次数：
- 第一作者：
- 王丽琴
- 通讯作者：
- 王祥生,郭新闻,李钢,修景海,刘松
- 发表时间：
- 2022-10-10
- 发表刊物：
- 催化学报
- 文献类型：
- J
- 期号：
- 2
- 页面范围：
- 132-136
- ISSN号：
- 0253-9837
- 摘要：
- The titanium silicalite-1 (TS-1) zeolite was quickly synthesized through modifying the conventional hydrothermal synthesis procedure with self-made aqueous tetrapropyl ammonium hydroxide as a template. The crystallization kinetics for synthesis of TS-1 zeolite was also investigated. The results show that the induction periods of the crystallization process are all short, and as the crystallization temperature increases, the nucleation rate and crystal growth rate increase. The calculated apparent activation energy of nucleation and crystal growth is 33.60 and 36.73 kJ/mol, respectively, which is a little less than that of conventional hydrothermal synthesis. The pH value of crystalline TS-1 changes more distinctly at the higher crystallization temperature. The formation process of TS-1 zeolite structure is consistent with the process of pH value increase in the synthetic system. The catalytic activity of TS-1 zeolite synthesized at higher crystallization temperature is higher than that synthesized at lower temperature, which is probably attributed to different amounts of framework Ti( IV) ions, as well as different relative crystallinity of TS-1 zeolite. The crystal size of TS-1 zeolite synthesized at different temperatures varies slightly, but it is approximately 100 nm after all.
- 备注：
- 新增回溯数据
- 是否译文：
- 否
