Combining autoclave and LCWM reactor studies to shed light on the kinetics of glucose oxidation catalyzed by doped molybdenum-based heteropoly acids

Voß D, Ponce S, Wesinger S, Etzold BJ, Albert J (2019)


Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 9

Pages Range: 29347-29356

Journal Issue: 50

DOI: 10.1039/c9ra05544d

Abstract

In this work we combined kinetic studies for aqueous-phase glucose oxidation in a high-pressure autoclave setup with catalyst reoxidation studies in a liquid-core waveguide membrane reactor. Hereby, we investigated the influence of Nb- and Ta-doping on Mo-based Keggin-polyoxometalates for both reaction steps independently. Most importantly, we could demonstrate a significant increase of glucose oxidation kinetics by Ta- and especially Nb-doping by factors of 1.1 and 1.5 compared to the classical HPA-Mo. Moreover, activation energies for the substrate oxidation step could be significantly reduced from around 80 kJ mol-1 for the classical HPA-Mo to 61 kJ mol-1 for the Ta- and 55 kJ mol-1 for the Nb-doped species, respectively. Regarding catalyst reoxidation kinetics, the doping did not show significant differences between the different catalysts.

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APA:

Voß, D., Ponce, S., Wesinger, S., Etzold, B.J., & Albert, J. (2019). Combining autoclave and LCWM reactor studies to shed light on the kinetics of glucose oxidation catalyzed by doped molybdenum-based heteropoly acids. RSC Advances, 9(50), 29347-29356. https://dx.doi.org/10.1039/c9ra05544d

MLA:

Voß, Dorothea, et al. "Combining autoclave and LCWM reactor studies to shed light on the kinetics of glucose oxidation catalyzed by doped molybdenum-based heteropoly acids." RSC Advances 9.50 (2019): 29347-29356.

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