四丙基氢氧化铵处理 TS-1催化1-丁烯环氧化
发表时间：2022-07-01
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- 第一作者：
- 左轶
- 通讯作者：
- 刘民,姜海英,郭新闻
- 发表时间：
- 2015-01-01
- 发表刊物：
- 石油学报 石油加工
- 所属单位：
- 化工学院
- 文献类型：
- J
- 期号：
- 3
- 页面范围：
- 611-616
- ISSN号：
- 1001-8719
- 摘要：
- A small-crystal titanium silicalite-1 (TS-1) with a crystal size of 600 nm was synthesized in a tetrapropylammonium bromide-ethylamine system . The sample was extruded , then treated with dilute tetrapropylammonium hydroxide (TPAOH) solution and fed in a fixed-bed reactor to evaluate its catalytic performances of 1-butene epoxidation with H2 O2 to 1 ,2-butene oxide . Via comparing the catalytic performances of the untreated and treated samples ,it was found that the TPAOH treatment could improve the catalytic activity and stability of TS-1 significantly ,because of the crystallization of amorphous supports on the external surface unblocking the channels of TS-1 and the hollow s generated in the crystals decreasing the diffusion limitation of substrates and products , which increased the carbon storage ability . Meanwhile , the transformation of tetrahedrally coordinated Ti to pentahedrally coordinated Ti could improve the catalytic activity of TS-1 .
- 备注：
- 新增回溯数据
- 是否译文：
- 否
