Seed-assisted synthesis of TS-1 crystals containing Al with high catalytic performances in cyclohexanone ammoximation
RSC ADVANCES(2019)
摘要
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 L-b value and higher catalytic activity in cyclohexanone ammoximation. Larger L-b 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 Bronsted acid sites; these acid sites were more favorable to the catalytic performances in cyclohexanone ammoximation.
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Crystallization Mechanism
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