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Title: Catalytic oxidation of styrene over Cu-doped hydrotalcites
Authors: Nguyen, Tien Thao
Le, Thi Kim Huyen
Keywords: oxidation;Cu-doped hydrotalcite;TBHP;styrene oxide;benzaldehyde
Issue Date: 2015
Publisher: Đại học Quốc gia Hà Nội
Abstract: A set of Mg-Cu-Al hydrotalcite–like materials with different Mg/Cu/Al ratios were synthesized by the co-precipitation technique. The prepared samples were characterized by physical techniques of XRD, FT-IR, Raman, N2 physisorption, SEM, TEM, XPS, and UV prior to use as catalysts for the liquid oxidation of styrene. All synthesized samples possess a well crystallized hydrotalcite structure, medium surface, and uniform particles. Cu2+ ions at octahedral sites stably in the brucite-like sheets catalyze the epoxidation of styrene with tertbutyl hydrogen peroxide oxidant. The catalytic activity is related to the amount of copper content and oxidant behavior. The Cu-doped hydrotalcite catalysts show a rather good activity and high selectivity to styrene oxide (80-90%) at a high styrene conversion level.
Description: CHEMICAL ENGINEERING JOURNAL Volume: 279 Pages: 840-850 Published: NOV 1 2015 ; TNS05563
Appears in Collections:Bài báo của ĐHQGHN trong Web of Science

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