In:
Chemical Engineering & Technology, Wiley, Vol. 40, No. 11 ( 2017-11), p. 2084-2095
Abstract:
Oxidation of acrolein to acrylic acid on a Mo/V/W mixed oxide catalyst was studied by transient (cyclic temperature‐programmed (TP)) as well as steady‐state methods. TP reactions (TPReactions) exhibit an activity hysteresis of the catalyst with respect to temperature. As a result of the steady‐state measurements, the activity hysteresis is not related to multiple steady states and is exclusively a transient phenomenon. Generally, the dynamics of bulk oxygen plays a key role leading to a reversible oxidation/reduction of the catalyst surface which influences the activity. This means the bulk acts as oxygen buffer. In this context, a reaction model, which involves the participation of bulk oxygen, was deduced and verified by modeling.
Type of Medium:
Online Resource
ISSN:
0930-7516
,
1521-4125
DOI:
10.1002/ceat.201700111
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
1477681-9
detail.hit.zdb_id:
56471-0