Dehydrogenative Oxidation of Alcohols Catalyzed by Highly Dispersed Ruthenium Incorporated Titanium Oxide

• Main Authors: Youngyong Kim, Seokhoon Ahn, Jun Yeon Hwang, Doo-Hyun Ko, Ki-Young Kwon
• Format: Article
• Language: English
• Published: MDPI AG 2016-12-01
• Series: Catalysts
• Subjects: ruthenium catalyst; titanium oxide; dehydrogenative oxidation
• Online Access: http://www.mdpi.com/2073-4344/7/1/7

Ruthenium incorporated titanium oxides (RuxTiO2) were prepared by a one-step hydrothermal method using Ti(SO4)2 and RuCl3 as the precursor of Ti and Ru, respectively. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), Energy-dispersive X-ray spectroscopy (EDS) mapping, and BET were applied for the analyses of catalysts. Ruthenium atoms are well dispersed in the anatase phase of TiO2 and the crystallite size of RuxTiO2 (≈17 nm) is smaller than that of pure TiO2 (≈45 nm). In particular, we found that our homemade pure TiO2 exhibits a strong Lewis acid property. Therefore, the cooperation of ruthenium atoms playing a role in the hydride elimination and the Lewis acid site of TiO2 can efficiently transfer primary alcohols into corresponding aldehydes in an oxidant-free condition.