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Oxidative conversion of propane to acrylic acid and acetic acid over mixed oxide catalysts
Author(s) -
Rane Vilas H,
Rodemerck Uwe,
Baerns Manfred
Publication year - 2006
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1406
Subject(s) - catalysis , acetic acid , acrylic acid , propane , chemistry , space velocity , inorganic chemistry , oxide , oxygen , nuclear chemistry , selectivity , organic chemistry , polymer , copolymer
The oxidative conversion of propane to acrylic acid and acetic acid over MoVSbRO (RLa, Ce, Nd and Sm) catalysts at different reaction conditions (viz. temperature, C 3 H 8 /O 2 ratio, H 2 O/C 3 H 8 ratio, space velocity, etc.) was investigated. The catalytic activity and selectivity of the MoVSb catalyst are strongly influenced by the addition of rare earth metals to the catalyst. The addition of water vapour to the feed of propane and oxygen enhances greatly the formation of oxygenated products, particularly acrylic acid and acetic acid. The ratio of selectivities of acrylic acid to acetic acid was found to depend on the rare earth metal used in the catalyst's preparation and the reaction conditions. High contact times, i.e. high degrees of propane conversion, are detrimental to the formation of acrylic acid but beneficial for acetic acid formation. Copyright © 2005 Society of Chemical Industry