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

机译:种子辅助合成含Al的TS-1晶体在环己酮氨氧化反应中的高催化性能

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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 Br?nsted acid sites; these acid sites were more favorable to the catalytic performances in cyclohexanone ammoximation.
机译:在这项研究中,使用铝硅酸盐MFI沸石作为种子在四丙基溴化铵(TPAB)-乙醇胺(EA)系统中合成了含铝的钛硅沸石(TS-1)晶体。含Al的TS-1具有较大的尺寸,较大的L_(b)值和较高的环己酮氨氧化催化活性。 L _(b)值越大,TS-1晶体的机械强度和耐蚀性越好。在TS-1晶体中引入Al原子导致产生更多的酸位和更强的布朗斯台德酸位。这些酸位更有利于环己酮氨氧化反应的催化性能。

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