Spectroscopic and electrochemical characterization of heteropoly acids for their optimized application in selective biomass oxidation to formic acid
2013; Royal Society of Chemistry; Volume: 16; Issue: 1 Linguagem: Inglês
10.1039/c3gc41320a
ISSN1463-9270
AutoresJakob Albert, D.D. Lüders, Andreas Bösmann, Dirk M. Guldi, Peter Wasserscheid,
Tópico(s)Carbon dioxide utilization in catalysis
ResumoDifferent Keggin-type polyoxometalates have been synthesized and characterized in order to identify optimized homogeneous catalysts for the selective oxidation of biomass to formic acid (FA) using oxygen as an oxidant and p-toluenesulfonic acid as an additive. Applying the optimized polyoxometalate catalyst system H8[PV5Mo7O40] (HPA-5), a total FA-yield (with respect to carbon in the biogenic feedstock) of 60% for glucose within 8 h reaction time and 28% for cellulose within 24 h reaction time could be achieved. The transformation is characterized by its mild reaction temperature, its excellent selectivity to FA in the liquid product phase and its applicability to a very wide range of biogenic raw materials including non-edible biopolymers and complex biogenic mixtures.
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