Phosphotungstate-Based Ionic Silica Nanoparticles Network for Alkenes Epoxidation

Catalysts

Xiaoting Li²  Pingping Jiang¹  Zhuangqing Wang²  Yuandan Huang² 

[1] The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China

关键词: silica nanoparticles;    ionic liquid;    network;    phosphotungstate;    catalyst;    epoxidation;   

DOI  :  10.3390/catal6010002

来源: mdpi

【 摘 要 】

An inorganic-organic porous silica network catalyst was prepared by linking silica nanoparticles using ionic liquid and followed by anion-exchange with phosphotungstate. Characterization methods of FT-IR, TG, SEM, TEM, BET, etc., were carried out to have a comprehensive insight into the catalyst. The catalyst was used for catalyzing cyclooctene epoxidation with high surface area, high catalytic activity, and convenient recovery. The conversion and selectivity of epoxy-cyclooctene could both reach over 99% at 70 °C for 8 h using hydrogen peroxide (H₂O₂) as an oxidant, and acetonitrile as a solvent when the catalyst was 10 wt. % of cyclooctene.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.