Effect of support acidity during selective hydrogenolysis of glycerol over supported palladium-ruthenium catalysts

Guadix-Montero, Susana, Santos-Hernandez, Alba, Folli, Andrea and Meenakshisundaram, Sankar 2020. Effect of support acidity during selective hydrogenolysis of glycerol over supported palladium-ruthenium catalysts. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences 378 (2176) , 20200055. 10.1098/rsta.2020.0055

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Abstract

We report the role of the acidity of support during the selectivity hydrogenolysis of glycerol over supported bimetallic palladium–ruthenium (PdRu) catalysts. The PdRu nanoparticles were supported on a series of metal oxides and zeolitic supports via the modified impregnation method and tested for the liquid-phase hydrogenolysis of glycerol using gaseous hydrogen. The relative acid site densities of selected catalysts were determined by ammonia temperature-programmed desorption and pyridine desorption experiments. Based on these studies, we report a direct correlation between the catalytic activity (conversion and 1,2 propane diol yield) and two different acid sites (strong acid sites and very strong acid sites). Besides zeolite-supported catalysts, TiO2 supported PdRu nanoparticles exhibit moderate catalytic activity; however, this catalyst shows high selectivity for the desired C–O bond cleavage to produce C3 products over the undesired C–C bond cleavage to produce < C3 products.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Royal Society, The
ISSN:	1364-503X
Date of First Compliant Deposit:	8 July 2020
Date of Acceptance:	11 May 2020
Last Modified:	07 Dec 2020 18:36
URI:	http://orca-mwe.cf.ac.uk/id/eprint/133231

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