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Influence of solid acids as co-catalysts on glycerol hydrogenolysis to propylene glycol over Ru/C catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
42841 45943 2009 6 PDF Available
Title
Influence of solid acids as co-catalysts on glycerol hydrogenolysis to propylene glycol over Ru/C catalysts
Abstract

Glycerol hydrogenolysis to propane diols was carried out over Ru/C catalysts using different solid acids as co-catalysts. Solid acids such as niobia, 12-tungstophosphoric acid (TPA) supported on zirconia, cesium salt of TPA and cesium salt of TPA supported on zirconia were used. The acidities of the solid acid catalysts were measured by temperature programmed desorption of ammonia. The conversion of glycerol depends on the total acidity of the catalysts and there exists a linear correlation between conversion and acidity. The selectivity towards 1,2-propanediol and the glycerol conversion varied with the change in the concentrations of both Ru/C and solid acid catalysts, suggesting a synergetic effect of the reaction. This reaction requires minimum amount of both acid and metal sites to obtain reasonable activity. Different reaction parameters were studied and optimized reaction conditions were established.

Graphical abstractSelective glycerol hydrogenolysis to 1,2-propanediol and ethylene glycol has been achieved over Ru/C in combination with solid acid as co-catalyst. The glycerol conversion and selectivity are related to the acidity of the catalysts, because there exists a linear relation between acidity and glycerol conversion.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Glycerol; Niobia; Ruthenium; Hydrogenolysis; Propanediol; Ethylene glycol
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Influence of solid acids as co-catalysts on glycerol hydrogenolysis to propylene glycol over Ru/C catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 354, Issues 1–2, 15 February 2009, Pages 82–87
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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