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Deactivation and Selectivity Pattern in Crotonaldehyde Hydrogenation
Author(s) -
Consonni M.,
Touroude R.,
Murzin D. Yu.
Publication year - 1998
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(199807)21:7<605::aid-ceat605>3.0.co;2-h
Subject(s) - crotonaldehyde , chemistry , catalysis , microreactor , hydrogenolysis , selectivity , butyraldehyde , reaction rate , inorganic chemistry , organic chemistry , photochemistry , chemical engineering , engineering
Gas phase hydrogenation of crotonaldehyde to crotyl alcohol, butyraldehyde, and butanol was studied in a differential microreactor at atmospheric pressure and 353 K over a supported Pt catalyst. The reaction rate was seen to be dependent on the catalyst pre‐treatment mode. Rapid deactivation has been observed and the deactivation rate differed for differently treated samples. Kinetic modelling was based upon reaction a network, which apart from conventional dehydration steps included parallel hydrogenolysis to hydrocarbons. Deactivation phenomena were assumed to occur as a result of the formation of surface deposits, which block active catalyst sites. An adequate description of experimental data has been achieved via parameter estimation.