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  • Multielement crystalline and pseudocrystalline oxides as efficient catalysts for the direct transformation of glycerol into acrylic acid.

Multielement crystalline and pseudocrystalline oxides as efficient catalysts for the direct transformation of glycerol into acrylic acid.

ChemSusChem (2014-12-10)
Alessandro Chieregato, M Dolores Soriano, Ester García-González, Giuseppe Puglia, Francesco Basile, Patricia Concepción, Claudia Bandinelli, José M López Nieto, Fabrizio Cavani
ABSTRACT

Glycerol surplus from biodiesel synthesis still represents a major problem in the biofuel production chain. Meanwhile, those in the acrylic acid market are looking for new processes that are able to offer viable alternatives to propylene-based production. Therefore, acrylic acid synthesis from glycerol could be an effective solution to both issues. Among the viable routes, one-pot synthesis theoretically represents the most efficient process, but it is also highly challenging from the catalyst design standpoint. A new class of complex W--Mo--V mixed-oxide catalysts, which are strongly related to the hexagonal tungsten bronze structure, able to directly convert glycerol into acrylic acid with yields of up to 51 % are reported.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Vanadium(IV) oxide sulfate hydrate, ≥99.99% trace metals basis
Sigma-Aldrich
Vanadium(IV) oxide sulfate hydrate, 97%
Sigma-Aldrich
Ammonium metatungstate hydrate, ≥85% WO3 basis (gravimetric)
Sigma-Aldrich
Ammonium metatungstate hydrate, 99.99% trace metals basis
Sigma-Aldrich
Ammonium metatungstate hydrate, ≥66.5% (W)