Degradation of alkanolamines in gas-treating solutions: Kinetics of Di-2-propanolamine degradation in aqueous solutions containing carbon dioxide
The rates and products of degradation of di-2-propanolamine (DIPA) were measured at 100-120/sup 0/C in the presence of a controlled amount of CO/sub 2/. DIPA underwent facile degradation, giving 3-(2-hydroxypropyl)-5-methyl-2-oxazolidone (HPMO) as the main product. Hydrolysis of HPMO occurs readily, but its equilibrium concentration increases with increasing amounts of CO/sub 2/ in solution. A kinetic model was derived and compared with the previously established model for diethanolamines (DEA) degradation. The virtual absence of di- or triamino degradation products is the most striking feature of DIPA degradation, which may be contrasted with the facile formation of di- and triamino products from DEA. This difference is discussed in terms of steric inhibition of the reaction, HPMO + DIPA ..-->.. diamino compounds.
- Research Organization:
- 1240 Rattlesnake Bridge Road, Bedminster, NJ (US)
- OSTI ID:
- 7031001
- Journal Information:
- Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 27:1; ISSN IECRE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
AMINES
AQUEOUS SOLUTIONS
AZOLES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
ETHANOL
HETEROCYCLIC COMPOUNDS
HYDROLYSIS
HYDROXY COMPOUNDS
INHIBITION
KINETICS
LYSIS
MEASURING METHODS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXAZOLES
PRODUCTION
PROPANOLS
REACTION KINETICS
SOLUTIONS
SOLVOLYSIS
THERMAL DEGRADATION
YIELDS