燃料化学学报2016，Vol.44Issue(8)：1001-1009,9.
Silicalite-1空心球材料制备及其在Beckmann重排反应中催化应用研究
Synthesis of Silicalite-1 hollow sphere catalyst and its application for Beckmann rearrangement reaction
摘要
Abstract
Silicalite-1 zeolite hollow sphere structured material was hydrothermally synthesized via the aid of carbon microspheres as hard-template. The morphology, structure, textural and physicochemical properties of the material were characterized with XRD, SEM, FT-IR, N2 adsorption-desorption isotherm, 29 Si MAS NMR, TG, and XPS techniques. It was suggested that the obtained Silicalite-1 hollow spheres were highly crystallized with developed multiple channel structure and abundant surface hydroxyl groups, which endowed the material with excellent catalytic properties in Beckmann rearrangement reaction of cyclohexanone-oxime. Compared with the Silicalite-1 catalyst prepared from conventional method, the Silicalite-1 hollow sphere catalyst showed much higher activity to the conversion of cyclohexanone-oxime ( 99%) and selectivity of caprolactam ( 94%) , with excellent stability at the same time. The abundant nest silanols and terminal silanols in Silicalite-1 hollow sphere were main active sites for Beckmann rearrangement reaction, and could be easily recovered from the deactivated catalysts by calcination.关键词
Silicalite-1/空心材料/碳微球/硬模板法/Beckmann重排Key words
Silicalite-1/hollow sphere/carbon microspheres/hard-template/Beckmann rearrangement分类
化学引用本文复制引用
金亚美,董梅,王国富,王浩,李俊汾,樊卫斌,王建国,秦张峰..Silicalite-1空心球材料制备及其在Beckmann重排反应中催化应用研究[J].燃料化学学报,2016,44(8):1001-1009,9.基金项目
The project was supported by National Natural Science Foundation of China (21103216,21273264,21273263), the Major State Basic Research Development Program of China (973 program,2011CB201403) and Natural Science Foundation of Shanxi Province (2012011005-2).国家自然科学基金(21103216,21273264,21273263),国家重点基础研究发展规划(973计划,2011CB201403)和山西省自然科学基金(2012011005-2)资助 （21103216,21273264,21273263）
