In:
ChemCatChem, Wiley, Vol. 11, No. 14 ( 2019-07-18), p. 3242-3252
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 D 2 O‐SSITKA and temperature‐programmed desorption, a detailed reaction mechanism for acrolein oxidation is proposed.
Type of Medium:
Online Resource
ISSN:
1867-3880
,
1867-3899
DOI:
10.1002/cctc.201900549
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2501161-3