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Dynamics of Bulk Oxygen in the Selective Oxidation of Acrolein
Author(s) -
Heid Maurice,
Knoche Stefan,
Gora Niklas,
Ohlig Dominik,
Drochner Alfons,
Etzold Bastian J. M.,
Vogel Herbert
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201700124
Subject(s) - acrolein , oxygen , catalysis , chemistry , oxide , acrylic acid , selectivity , inorganic chemistry , chemical engineering , photochemistry , organic chemistry , monomer , engineering , polymer
The gas‐phase oxidation of acrolein to acrylic acid on a hydrothermally prepared mixed oxide catalyst was investigated by steady‐state isotopic transient kinetic analysis (SSIKTA) as well as different types of concentration‐programmed techniques (CPR‐pulse, CPO) under in situ or process‐relevant conditions. Balancing the amounts of active oxygen gives an overview of the quantities of participating bulk oxygen species. The dynamics of bulk oxygen lead to re‐oxidation processes on the catalyst surface and thus influence the selectivity pattern of the network of acrolein oxidation. Furthermore, the bulk dynamics are activated by temperature.