A magnetically recyclable TS-1 for ammoximation of cyclohexanone

A magnetically recyclable TS-1 for ammoximation of cyclohexanone
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用于环己酮氨肟化的磁性可回收 TS-1

DOI:
10.1016/j.catcom.2014.02.004
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发表时间:
2014-04
影响因子:
3.7
通讯作者:
Guan Guofeng
Guan Guofeng
中科院分区:
化学3区
文献类型:
--
作者:
Liu Tong;Wang Lei;Wan Hui;Guan Guofeng

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本文制备了钛硅分子筛TS-1包覆Fe 3 O 4纳米粒子(简称Fe3O4@TS-1),并将其用于环己酮氨肟化反应。表征结果表明,磁性催化剂表面包覆了一层厚度约为30 nm的TS-1薄层。引入Fe 3 O 4核后,催化剂仍表现出良好的催化活性。回收实验表明,外加磁场可使Fe3O4@TS-1催化剂易于回收。此外,在四次循环后没有观察到明显的催化剂失活。本研究为解决TS-1在实际应用中的回收问题提供了一条有效途径。
In this paper, Fe3O4nanoparticles coated with titanium silicalite-1 (designated Fe3O4@TS-1) were successfully prepared and used as catalysts for ammoximation of cyclohexanone. Characterizations demonstrated that the magnetic catalyst was coated with a thin TS-1 layer of ~ 30 nm in thickness. The catalyst still displayed excellent catalytic activity after introducing Fe3O4core. Recovery experiments revealed that Fe3O4@TS-1 catalyst could be easily recovered by adding an external magnetic field. Moreover, no appreciable catalytic deactivation was observed after four times of recycling. This work provided a promising way to overcome the recycle problem during the application of TS-1.
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