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Published in: Biomass Conversion and Biorefinery 1/2024

05-03-2022 | Original Article

A green way for pyruvic acid synthesis from biomass-derived L-malic acid on tetrahedral versus octahedral cobalt sites/hematite

Authors: Gheorghiţa Mitran, Adriana Urdă, Octavian-Dumitru Pavel, Ștefan Neațu, Mihaela Florea, Florentina Neaţu

Published in: Biomass Conversion and Biorefinery | Issue 1/2024

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Abstract

A series of cobalt-iron mixed oxides, CoxFe3−xO4 (x = 0; 0.05; 0.1; 0.15), were synthesized by coprecipitation and tested for oxidative decarboxylation of malic acid to pyruvic or malonic acid. The characterization of catalysts was performed by different techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFT) and Ultraviolet–visible spectroscopy (UV–Vis). Among studied catalysts, Co0.15Fe2.85O4 sample (denoted Co3Fe) showed the highest malic acid conversion in oxidative decarboxylation reaction as well as the highest pyruvic acid yield. This behavior can be due to the fact that this sample has the highest content of tetrahedral Co2+ that replaces Fe3+ from octahedral position that determine an increased number of defects that play a crucial role for the malic acid conversion.

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Metadata
Title
A green way for pyruvic acid synthesis from biomass-derived L-malic acid on tetrahedral versus octahedral cobalt sites/hematite
Authors
Gheorghiţa Mitran
Adriana Urdă
Octavian-Dumitru Pavel
Ștefan Neațu
Mihaela Florea
Florentina Neaţu
Publication date
05-03-2022
Publisher
Springer Berlin Heidelberg
Published in
Biomass Conversion and Biorefinery / Issue 1/2024
Print ISSN: 2190-6815
Electronic ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-022-02513-1

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