Mechanistic Study on the Selective Oxidation of Acrolein to Acrylic Acid: Identification of the Rate-Limiting Step via Perdeuterated Acrolein

Knoche S, Heid M, Gora N, Ohlig D, Drochner A, Hess C, Etzold BJ, Vogel H (2019)

Publication Type: Journal article

Publication year: 2019

Journal

ChemCatChem Wiley-VCH Verlag

Book Volume: 11

Pages Range: 3242-3252

Journal Issue: 14

DOI: 10.1002/cctc.201900549

Abstract

Gas phase oxidation of acrolein to acrylic acid on hydrothermally prepared Mo/V/W mixed oxides was investigated by isotopic labeling of acrolein. In this context, perdeuterated acrolein was synthesized for the first time and subsequently used for mechanistic studies. A clear kinetic isotopic effect (KIE) is observed referring to the α-hydrogen-abstraction as the rate-determining step in the selective acrolein oxidation. Furthermore, no change in the selectivity patterns is observed due to the perdeuteration, which confirms that the α-hydrogen-abstraction also acts as the rate-limiting step in the total oxidation of acrolein. Based on these KIE studies combined with additional experiments including D2O-SSITKA and temperature-programmed desorption, a detailed reaction mechanism for acrolein oxidation is proposed.

Authors with CRIS profile

Bastian Etzold

Involved external institutions

Technische Universität Darmstadt DE Germany (DE)

How to cite

APA:

Knoche, S., Heid, M., Gora, N., Ohlig, D., Drochner, A., Hess, C.,... Vogel, H. (2019). Mechanistic Study on the Selective Oxidation of Acrolein to Acrylic Acid: Identification of the Rate-Limiting Step via Perdeuterated Acrolein. ChemCatChem, 11(14), 3242-3252. https://doi.org/10.1002/cctc.201900549

MLA:

Knoche, Stefan, et al. "Mechanistic Study on the Selective Oxidation of Acrolein to Acrylic Acid: Identification of the Rate-Limiting Step via Perdeuterated Acrolein." ChemCatChem 11.14 (2019): 3242-3252.

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