种子辅助合成含铝TS-1晶体及其在环己酮氨肟化反应中的高催化性能

Seed-assisted synthesis of TS-1 crystals containing Al with high catalytic performances in cyclohexanone ammoximation.

作者信息

Xue Yan, Zuo Guangling, Wen Yiqiang, Wei Huijuan, Liu Meng, Wang Xiangyu, Li Baojun

机构信息

Biological and Chemical Engineering College, Nanyang Institute of Technology 80 Changjiang Road Nanyang 473004 China

Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, Zhengzhou University 100 Science Road Zhengzhou 450001 China

出版信息

RSC Adv. 2019 Jan 18;9(5):2386-2394. doi: 10.1039/c8ra10104c.

DOI:10.1039/c8ra10104c

PMID:35520480

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9059887/

Abstract

In this study, titanium silicalite (TS-1) crystals containing Al were synthesized using aluminosilicate MFI zeolites as seeds in a tetrapropylammonium bromide (TPAB)-ethanolamine (EA) system. The TS-1 containing Al possessed large size, large value and higher catalytic activity in cyclohexanone ammoximation. Larger value would endow the TS-1 crystals with better mechanical strength and erosion resistance. The introduction of an Al atom into the TS-1 crystals resulted in the production of more acid sites and a bit strong Brönsted acid sites; these acid sites were more favorable to the catalytic performances in cyclohexanone ammoximation.

摘要

在本研究中，以铝硅酸盐MFI沸石为晶种，在四丙基溴化铵（TPAB）-乙醇胺（EA）体系中合成了含铝的钛硅分子筛（TS-1）晶体。含铝的TS-1具有较大的尺寸、较大的值，并且在环己酮氨肟化反应中具有较高的催化活性。较大的值会赋予TS-1晶体更好的机械强度和抗侵蚀性。向TS-1晶体中引入一个铝原子会产生更多的酸性位点和稍强的布朗斯特酸性位点；这些酸性位点更有利于环己酮氨肟化反应中的催化性能。