预处理方法对钛硅沸石催化性能的影响
发表时间：2025-06-03
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- 第一作者：
- 郭新闻
- 通讯作者：
- 刘民,王祥生,李钢,陈永英,刘松
- 发表时间：
- 2022-10-09
- 发表刊物：
- 催化学报
- 所属单位：
- 化工学院
- 文献类型：
- J
- 卷号：
- 22
- 期号：
- 4
- 页面范围：
- 370-372
- ISSN号：
- 0253-9837
- 摘要：
- Titanium silicalite-1 (TS-1) was pretreated by solution of HCl-H2O2, NH4F-H2O2, HNO3-H2O2 or H2SO4-H2O2. The pretreated samples were characterized by IR, XRD, UV-Vis, XRF and Al-27 MAS NMR and evaluated by epoxidation of propylene with H2O2. The results showed that almost all Na+ and about 20% of TiO2 are removed from TS-1 after pretreatment. The TiO2 removed from TS-1 is extra-framework titanium species. After pretreatment, the selectivity for PO decreases, and the utilization of H2O2 increases obviously. Concerning the utilization and the conversion of H2O2, the pretreatment method with NH4F-H2O2 is the best one.
- 备注：
- 新增回溯数据
- 是否译文：
- 否
