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Kinetic Determination of the Gas‐Phase Decarbonylation of Butyraldehyde in the Presence of HCl Catalyst
Author(s) -
Julio Libia L.,
Cartaya Loriett,
Maldonado Alexis,
Monascal Yeljair,
Mora José R.,
Cordova Tania,
Chuchani Gabriel
Publication year - 2017
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.21078
Subject(s) - chemistry , butyraldehyde , decarbonylation , catalysis , kinetics , reaction rate constant , propane , gas phase , chloride , homogeneous , reaction mechanism , inorganic chemistry , medicinal chemistry , organic chemistry , thermodynamics , physics , quantum mechanics
The gas‐phase kinetics and mechanism of the homogeneous elimination of CO from butyraldehyde in the presence of HCl has been experimentally studied. The reaction is homogeneous and follows the second‐order kinetics with the following rate expression: log k 1 (s −1 L mol −1 ) = (13.27 ± 0.36) – (173.2 ± 4.4) kJ mol −1 (2.303 RT ) −1 . Experimental data suggested a concerted four‐membered cyclic transition state type of mechanism. The first and rate‐determining step occurs through a four‐membered cyclic transition state to produce propane and formyl chloride. The formyl chloride intermediate rapidly decomposes to CO and HCl gases.