Effect of Ru precursors and reduction conditions on catalyst performance in glycerol hydrogenolysis

TitleEffect of Ru precursors and reduction conditions on catalyst performance in glycerol hydrogenolysis
Publication TypeJournal Article
Year of Publication2017
AuthorsMane, RB, Patil, ST, Gurav, H, Rayalu, SS, Rode, CV
JournalChemistrySelect
Volume2
Issue4
Pagination1734-1745
Date PublishedFEB
Type of ArticleArticle
ISSN23656549
AbstractCatalyst precursors, their reduction protocols and reaction conditions integrally influenced the activity and selectivity pattern in glycerol hydrogenolysis. Ru prepared from chloride precursor (Ru(Cl)/C−B) showed the maximum selectivity to C−C cleavage products EG (56 %) and methanol (17 %) with 23 % selectivity to 1,2-PDO. While, that prepared from nitrosyl precursor (Ru(n)/C−B) showed higher selectivity to 1,2-PDO (44 %) and lower to EG (42 %). The catalysts prepared either with chloride or nitrosyl precursors but reduced by H2 showed lower glycerol conversion (10-11 %) than NaBH4 reduced catalysts. For these catalysts, 1,2-PDO selectivity increased to 40–43 % along with the major formation of 2-propanol (48-49 %) and very less selectivities to C−C cleavage products. The lower activity of the H2 reduced catalysts can be related to their lower acidity and the bigger Ru metal particle size (3-5 nm). For Ru(Cl)/C−B catalyst, glycerol conversion increased from 28–97 % with a rise in temperature from 180 to 250 oC also favoring 1,2-PDO selectivity; indicating that C−O bond cleavage was favoured in comparison to C−C scission, at higher temperature.
DOI10.1002/slct.201700049
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)1.505
Divison category: 
Chemical Engineering & Process Development

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