Xue Y, Zuo G, Wen Y, Wei H, Liu M, Wang X, Li B. Seed-assisted synthesis of TS-1 crystals containing Al with high catalytic performances in cyclohexanone ammoximation.
RSC Adv 2019;
9:2386-2394. [PMID:
35520480 PMCID:
PMC9059887 DOI:
10.1039/c8ra10104c]
[Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 12/26/2018] [Indexed: 01/07/2023] Open
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 Lb value and higher catalytic activity in cyclohexanone ammoximation. Larger Lb 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.
Using aluminosilicate zeolites seeds, Al atoms are introduced into the TS-1 crystals, resulting in high Lbvalue and more acid sites, which improve the catalytic activity in cyclohexanone ammoximation.![]()
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