Preparation and characterization of Ru-based Catalysts for conversion of Glycerol to 1,2-propanediol under mild conditions

Title
Preparation and characterization of Ru-based Catalysts for conversion of Glycerol to 1,2-propanediol under mild conditions
Authors
이승환허은조수현이윤주박문주강정식문동주
Keywords
PDO; glycerol; bio-diesel; hydrogenolysis; Ru; hydrotalcite; 1,2-Propanediol(PDO)
Issue Date
2010-10
Publisher
13th Asia Pacific Confederation of Chemical Engineering Congress
Abstract
The effects of support in Ru-supported catalyst on the conversion and selectivity of 1,2-POD were investigated. The Ru-based catalysts were prepared by co-precipitation and impregnation methods in order to improve 1,2-PDO selectivity. The prepared catalysts were characterized by N2 physisorption, CO chemisorption, XRD, TPR, TPD and TEM techniques. The catalytic hydrogenation of glycerol to 1,2-PDO over the Ru-based catalysts was investigated at 453 K, 2.5 MPa of initial H2 pressure and 20 wt% glycerol aqueous solution for 18 h. It was found that the 5 wt% Ru-CaZnMg/Al catalyst prepared by the solid phase crystallization and impregnation methods showed glycerol conversion of 50 % and 1.2-PDO selectivity of 85 %. However, the Ru-based catalysts supported on alumina or zirconia were showed lower 1,2-PDO selectivity than the Ru-CaZnMg/Al catalyst. It was found that the selectivity of 1,2-PDO increased with the acidity of catalyst. The results suggest that the Ru-CaZnMg/Al catalyst is a candidate for the production of 1,2-PDO from glycerol.
URI
http://pubs.kist.re.kr/handle/201004/38691
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KIST Publication > Conference Paper
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