The hydrogenation reaction of muconic acid, produced from biomass using fermentative pro-cesses, to bio-adipic acid is one of the most appealing green emerging chemical process. This re-action can be promoted by catalysts based on metal belonging to the platinum-group and the use of a second metal can preserve and increase their activity. PdAu bimetallic nanoparticles samples supported on high temperature heat-treated carbon nanofibers were prepared using sol-immobilization method, changing the Pd-Au molar ratio. These catalysts were characterized by TEM, STEM and XPS analysis and tested in a batch reactor pressurized with hydrogen where muconic acid dissolved in water was converted to adipic acid. The synthesized Au-Pd bimetallic catalysts showed higher activity than monometallic Au and Pd material and better stability during the recycling tests. Moreover, the selectivity toward the mono-unsaturated changes by decreasing the Pd/Au molar ratio: the higher the amount of gold, the higher the selectivity to-ward the intermediates.

Pd–Au Bimetallic Catalysts for the Hydrogenation of Muconic Acid to Bio-Adipic Acid / S. Capelli, I. Barlocco, F. Maria Scesa, X. Huang, D. Wang, F. Tessore, A. Villa, A. Di Michele, C. Pirola. - In: CATALYSTS. - ISSN 2073-4344. - 11:11(2021 Oct 29), pp. 1313.1-1313.11. [10.3390/catal11111313]

Pd–Au Bimetallic Catalysts for the Hydrogenation of Muconic Acid to Bio-Adipic Acid

S. Capelli
Primo
;
I. Barlocco
Secondo
;
F.E.V.G. Tessore;A. Villa;C. Pirola
Ultimo
2021

Abstract

The hydrogenation reaction of muconic acid, produced from biomass using fermentative pro-cesses, to bio-adipic acid is one of the most appealing green emerging chemical process. This re-action can be promoted by catalysts based on metal belonging to the platinum-group and the use of a second metal can preserve and increase their activity. PdAu bimetallic nanoparticles samples supported on high temperature heat-treated carbon nanofibers were prepared using sol-immobilization method, changing the Pd-Au molar ratio. These catalysts were characterized by TEM, STEM and XPS analysis and tested in a batch reactor pressurized with hydrogen where muconic acid dissolved in water was converted to adipic acid. The synthesized Au-Pd bimetallic catalysts showed higher activity than monometallic Au and Pd material and better stability during the recycling tests. Moreover, the selectivity toward the mono-unsaturated changes by decreasing the Pd/Au molar ratio: the higher the amount of gold, the higher the selectivity to-ward the intermediates.
Settore ING-IND/25 - Impianti Chimici
Settore CHIM/03 - Chimica Generale e Inorganica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/879490
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