Titanium dioxide functionalized silicon carbide phases as heterogeneous epoxidation catalysts†

IF 4.6 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanoscale Advances Pub Date : 2024-10-07 DOI:10.1039/D4NA00575A
Léa Gonçalves, Olinda Gimello, Karim Bouchmella, Peter Hesemann and Johan G. Alauzun
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Abstract

We report silicon carbide (SiC) based epoxidation catalysts constituted of a silicon carbide core and a silica/titania (SiO2/TiO2) shell. The catalysts were obtained via surface modification of SiC microparticles and were used as heterogeneous catalysts for the epoxidation of cyclohexene using tert-butyl hydroperoxide or cumyl hydroperoxide as the oxidant. Conversions up to 83% and selectivities of more than 90% were obtained.

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作为异相环氧化催化剂的二氧化钛功能化碳化硅相。
我们报告了由碳化硅内核和二氧化硅/钛(SiO2/TiO2)外壳构成的碳化硅(SiC)基环氧化催化剂。这些催化剂是通过对碳化硅微粒进行表面改性而获得的,并被用作以叔丁基过氧化氢或过氧化精基过氧化氢为氧化剂的环己烯环氧化反应的异相催化剂。催化剂的转化率高达 83%,选择性超过 90%。
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来源期刊
Nanoscale Advances
Nanoscale Advances Multiple-
CiteScore
8.00
自引率
2.10%
发文量
461
审稿时长
9 weeks
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