Premium
Hydrolysis of carbonyl sulfide: Comparison to reactions of isocyanates
Author(s) -
Ernst Wiliam R.,
Chen Michael S. K.,
Mitchell David L.
Publication year - 1990
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450680218
Subject(s) - chemistry , amine gas treating , hydrolysis , carbonyl sulfide , steric effects , catalysis , sulfide , reaction mechanism , organic chemistry , reaction rate constant , medicinal chemistry , kinetics , sulfur , physics , quantum mechanics
The hydrolysis of carbonyl suflfide (COS), catalyzed by tertiary amines, was studied in a gas‐liquid reactor at ambient conditions. Rate constants determined in a batch reactor were similar to those determined in a continuous flow reactor. A Bronsted plot of the reaction data over the amine basicity range, 0 < pK B < 14, suggested that both amine basicity and steric factors determine catalytic behavior. The reaction data suggest a mechanism analogous to one used to explain the base catalyzed reaction of isocyanates with hydroxyl compounds. The mechanism would involve complexation of COS with amine followed by hydrolysis of the complex.