| 赵虹,周继承.无机钛硅原料合成TS-1对环己酮氨氧化的催化性能[J].分子催化,2003,(3):193-197 |
| 无机钛硅原料合成TS-1对环己酮氨氧化的催化性能 |
| Catalytic Properties of Titanium Silicalite-1 Prepared by Mineral Materials for the Cyclohexanone Ammoximation |
| 修订日期：2002-09-24 |
| DOI： |
| 中文关键词: 无机钛硅原料 TS－1分子筛 粒径 内扩散 环已酮 氨氧化 |
| 英文关键词:Mineral materials,Titanium silicalite 1,Crystal si ze,Intracrystalline diffusion,Cyclohexanone,Ammoximation |
| 基金项目: |
| 赵虹 周继承 |
湘潭大学化工学院 湖南湘潭411105
(赵虹)
，湘潭大学化工学院 湖南湘潭411105(周继承)
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| 中文摘要: |
| 考察了无机钛硅原料TS-1合成过程中晶种、促进剂、动静态及样品预处理对催化环已酮氨氧化反应性能的影响．结果表明：合成条件对TS-1样品晶粒尺寸影响较大；样品晶粒尺寸较大而引起的晶内扩散限制是无机钛硅原料TS-1催化性能降低的最主要的原因；样品预处理可以较大幅度地提高环己酮的转化率及肟的收率．在动态加晶种条件下合成的TS-1晶粒较小，经预处理后环己酮的转化率可达97％以上，肟的收率94％以上． |
| 英文摘要: |
| The influence of the synthetic process on the catalytic pr operties of titanium silicalite 1 prepared by mineral materials was studied. The ammoximati o n of cyclohexanone was used to characterize the catalytic activity of the TS 1 sa mples. The results showed that adding seeds or promoter and stirring in TS 1 sy n thetic process affected the catalytic properties greatly; intracrystalline diffu sion activity was the main factor that reduced the catalytic properties of TS 1 s amples. The TS 1 catalytic properties could be improved greatly by pretreating t he TS 1 with H -2O -2 and H -2SO -4. With adding seeds in dynamic state smaller crystal size TS 1 sample was obtained, and after pretreatment the cyclohexanone conver sion and oxime yield could reach to 97% and 94% respectively. |
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