Kinetic Study of COS with Tertiary Alkanolamine Solutions. 1. Experiments in an Intensely Stirred Batch Reactor

Rob J. Littel, Geert F. Versteeg, Wim P.M. van Swaaij

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The reaction between COS and various tertiary alkanolamines in aqueous solutions has been studied in an intensely stirred batch reactor. Experiments for TEA, DMMEA, and DEMEA were carried out at 303 K; the reaction between COS and aqueous MDEA has been studied at temperatures ranging from 293 to 323 K. A two-step reaction mechanism has been proposed which describes all observed phenomena. This mechanism can be regarded as the base-catalyzed analogue of the reaction mechanism for the hydrolysis of COS. The proposed reaction mechanism was confirmed by absorption experiments into nonaqueous solutions of tertiary alkanolamines.
Original languageEnglish
Pages (from-to)1262-1269
Number of pages8
JournalIndustrial & Engineering Chemistry Research
Issue number5
Publication statusPublished - 1992

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