Heteroelements in polyoxometalates: a study on the influence of different group 15 elements on polyoxometalate formation

Raabe, Jan-Christian; Jameel, Froze; Stein, Matthias; Albert, Jakob; Poller, Maximilian J.

doi:10.1039/d3dt03883a

Dalton Trans.

2024

DOI: 10.1039/d3dt03883a

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Heteroelements in polyoxometalates: a study on the influence of different group 15 elements on polyoxometalate formation

Jan-Christian Raabe,

Froze Jameel,

Matthias Stein

et al.

Abstract: This study explores the influence of group 15 elements on polyoxometalate structures by combining DFT calculations with experimental results.

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Cited by 9 publications

References 60 publications

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Conversion of Sugars to Lactic Acid using Homogeneous Niobium‐Substituted Polyoxometalate Catalysts

Wesner,

Raabe,

Poller

et al. 2024

Chemistry A European J

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The catalytic conversion of biomass into high‐value chemicals is an increasing field of research. This study uniquely investigates the use of various Keggin‐type heteropoly salts (HPS) for the chemical conversion of sugars into lactic acid under mild conditions of 160°C and 20 bar N2. In the first phase, Nb‐ and V‐substituted HPSs were employed to synthesize lactic acid from dihydroxyacetone, an intermediate in the conversion of sugars to lactic acid. Results indicated that increasing the Nb content within the Keggin structure enhances the yield of lactic acid while reducing the formation of the byproduct acetaldehyde. A correlation was established between the redox activity of the HPS and the catalytic performance. The most active catalyst, Na5[PNb2Mo10O40], (NaNb2) achieved a lactic acid yield of 20.9% after 1 h of reaction. In the second phase of the study, NaNb2 was applied for the conversion of different sugars including glucose, fructose, mannose, sucrose, xylose, and cellobiose. It was demonstrated that the catalyst remains active for complex hexoses, achieving lactic acid yields of up to 12%. Post‐mortem analysis using infrared (IR) and Raman spectroscopy, nuclear magnetic resonance (NMR), and inductively coupled plasma optical emission spectrometry (ICP‐OES) confirmed the stability of NaNb2.

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Conversion of Sugars to Lactic Acid using Homogeneous Niobium‐Substituted Polyoxometalate Catalysts

Wesner,

Raabe,

Poller

et al. 2024

Chemistry A European J

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show abstract

Synthesis and characterization of V substituted Anderson-type telluro-molybdates and tungstates for catalytic oxidation of furan derivatives to formic and maleic acid

Raabe,

Esser,

Poller

et al. 2024

Catalysis Today

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Enhancing flame retardancy and smoke suppression of wood via in-situ synthesis of amine-phosphotungstic acid nanoparticles with tunable shapes

Wang,

Qing,

Liu

et al. 2024

Construction and Building Materials

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Heteroelements in polyoxometalates: a study on the influence of different group 15 elements on polyoxometalate formation

Abstract: This study explores the influence of group 15 elements on polyoxometalate structures by combining DFT calculations with experimental results.

Cited by 9 publications

References 60 publications

Conversion of Sugars to Lactic Acid using Homogeneous Niobium‐Substituted Polyoxometalate Catalysts

Conversion of Sugars to Lactic Acid using Homogeneous Niobium‐Substituted Polyoxometalate Catalysts

Synthesis and characterization of V substituted Anderson-type telluro-molybdates and tungstates for catalytic oxidation of furan derivatives to formic and maleic acid

Enhancing flame retardancy and smoke suppression of wood via in-situ synthesis of amine-phosphotungstic acid nanoparticles with tunable shapes

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