Title

Kinetics of the Non-Catalytic Water Gas Shift Reaction in Supercritical Water

Document Type

Article

Publication Date

12-3-2014

Publication Title

Energy Sources: Part A

Abstract

A kinetic analysis of the noncatalytic water gas shift reaction in a supercritical water medium was investigated using a specially designed 383 mL Haynes Alloy 230 tubular reactor at a constant pressure of 24.12 ± 0.04 MPa, water to carbon monoxide molar feed ratios of 5 to 37 moles of water per mole of carbon monoxide, and at temperatures varying from 768 to 1,048 K. The carbon monoxide concentration in the effluent gas reached a minimum of one mole-percent at 1,048 K, which corresponds to a 98% carbon monoxide to carbon dioxide conversion. Using global first-order kinetics a frequency factor of 105.76 ± 1.42 s−1 and an activation energy of 139.8 ± 24.5 kJ/mol was determined. It was also found that the developed kinetic rate model closely fits the experimental reaction data, with a coefficient of determination of R2 = 0.95, over a wide range of temperatures and reactant concentrations.

Volume

36

Issue

24

First Page

2666

Last Page

2672

DOI

10.1080/15567036.2011.572137

ISSN

ISSN: 1556-7036, ESSN: 1556-7230

Comments

The project was sponsored by the U.S. Army under PE Number 0602705A through a subcontract from DRS Technical Services, Inc. The authors are grateful for insightful technological guidance provided by Dr. Terry Dubois, CERDEC, U.S. Army, Ft. Belvoir, Virginia and Dr. H. Bryan Lanterman of DRS.

Rights

Copyright © 2020 Informa UK Limited

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