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Basic oxide-supported Ru catalysts for liquid phase glycerol hydrogenolysis in an additive-free system

Paper ID Volume ID Publish Year Pages File Format Full-Text
50164 46783 2014 5 PDF Available
Title
Basic oxide-supported Ru catalysts for liquid phase glycerol hydrogenolysis in an additive-free system
Abstract

•Ru/CeO2, Ru/La2O3 and Ru/MgO were efficient for the hydrogenolysis of glycerol.•The method is convenient because no additives are required.•The good performance of Ru/CeO2 is related to the weak surface basicity feature.•Lactic acid is formed by a Cannizzaro reaction from pyruvaldehyde.

Several basic oxide-supported Ru catalysts (Ru/CeO2, Ru/La2O3 and Ru/MgO) were prepared and evaluated for the hydrogenolysis of glycerol. The Ru catalysts were characterized by inductively coupled plasma–atomic emission spectroscopy, nitrogen adsorption, powder X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. Ru/CeO2 showed the best performance in the reaction, which is associated with its smaller metal particle size and the weak surface basicity feature of CeO2. 1,2-Propanediol is obtained as the main product through a dehydrogenation–dehydration–hydrogenation mechanism. The oxidation product lactic acid can be formed by a Cannizzaro reaction from the pyruvaldehyde intermediate.

Keywords
Ruthenium; Basic oxide support; Hydrogenolysis; Glycerol; 1,2-Propanediol; Lactic acid
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Basic oxide-supported Ru catalysts for liquid phase glycerol hydrogenolysis in an additive-free system
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 46, 10 February 2014, Pages 98–102
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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