'Supercritical Water' Density Effects on the Rate of Isopropanol Dehydration

Published

January 1, 2001

Author(s)

V I. Anikeev, Jeffrey A. Manion, A Ermakova

Abstract

A new experimental procedure for studying the kinetics and thermodynamics of chemical reactions in supercritical fluids-solvents was suggested. The kinetics and mechanism of the dehydration of 2-propanol in supercritical water in a closed reactor were studied. It was found that, first, the dehydration mechanism significantly differed from that observed in the presence of a homogeneous acid catalyst and, secondly, the rate of the reaction substantially depended on the density of supercritical water. A general mechanism of the dehydration of 2-propanol in supercritical water was suggested based on experimental studies of the hydration and hydrogenation reactions of some desired reaction products. The experimental data were well described by first-order kinetic equations. The kinetics of the reaction was studied and its rate constants determined. The density of supercritical water can be used as a parameter for controlling the kinetics and selectivity of the reaction.

Citation

Russian Journal of Physical Chemistry

Volume

75

Issue

No. 8

Pub Type

Journals

Keywords

2-propanol, 2-propanol dehydration, isopropanol dehydration, supercritical fluids, supercritical water

Citation

Anikeev, V. , Manion, J. and Ermakova, A. (2001), 'Supercritical Water' Density Effects on the Rate of Isopropanol Dehydration, Russian Journal of Physical Chemistry (Accessed October 11, 2025)