Amorphous TiO2–SiO2 composites as selective heterogeneous catalysts for the oxidation of styrene to 1, 2-epoxyethylbenzene

Autor:	Lixia Wang, Ruiqi Jian, Panming Jian, Yayun Zhang, Zihao Wang, Yonghang Deng, Jiangyong Liu
Rok vydání:	2019
Předmět:	Materials science Aqueous solution 010405 organic chemistry Composite number General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Styrene Amorphous solid chemistry.chemical_compound chemistry Composite material Acetonitrile Selectivity Hydrogen peroxide
Zdroj:	Journal of the Iranian Chemical Society. 16:1373-1381
ISSN:	1735-2428 1735-207X
Popis:	A series of amorphous TiO2–SiO2 composite oxides with different TiO2 contents were prepared by a one-step co-precipitation process as catalysts for selective oxidation of styrene to 1, 2-epoxyethylbenzene with aqueous hydrogen peroxide in acetonitrile. The amorphous TiO2–SiO2 composites are found to be much more catalytically active than the one with partially crystallized TiO2. The TiO2–SiO2 composite with 40 wt% TiO2 (TSCO-3) presents the best catalytic performance. Under the optimal reaction conditions, the styrene conversion can reach 61.0% with a high selectivity of 95.4% to 1, 2-epoxyethylbenzene upon 1 h reaction. Moreover, the TSCO-3 catalyst exhibits a good cycling stability. The excellent catalytic performance can be attributed to the numerous exposed active centers and the fast release of the product from the active centers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82239345dc3f3940bcfb691c20f173b1 https://doi.org/10.1007/s13738-019-01611-8 Zobrazit plný text záznamu Full text from SpringerLink