fulltext.study @t Gmail

Thermodynamics of oxidation of an alumina-supported cobalt catalyst by water in F-T synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
53301 46962 2016 7 PDF Available
Title
Thermodynamics of oxidation of an alumina-supported cobalt catalyst by water in F-T synthesis
Abstract

•Direct oxidation of cobalt by water cannot arise initiatively to CoO, Co3O4, and Co(OH)2.•The reaction in which CoO reacts with H2O to Co(OH)2 could go to the positive direction.•Oxidation of cobalt by water may occur spontaneously with the participation of alumina.•The reactions in the presence of Diaspore and Boehmite could go to right to a great extent probably.

H2O and H2 are the product and the reactant respectively in Fischer-Tropsch (F-T) synthesis reaction, at the same time they are the reactant and the product respectively in the oxidation of cobalt. The thermodynamics of the oxidation of cobalt metal was analyzed using thermodynamic data in the reaction process of F-T synthesis. Direct oxidation of cobalt oxides by water cannot happen spontaneously under the real conditions of F-T synthesis because of the positive value of ΔG, which becomes larger and larger with the increase of temperatures. However, with the participation of alumina used as catalyst support, oxidation of cobalt by water may occur spontaneously because of the negative value of ΔG. Moreover, the pressure equilibrium constants are all less than the thermodynamic equilibrium constants, indicating that the oxidation of cobalt can be spontaneous completely under industrial and laboratory conditions.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (179 K)Download as PowerPoint slide

Keywords
F-T synthesis; Cobalt catalyst; Thermodynamics; Water; Oxidation
First Page Preview
Thermodynamics of oxidation of an alumina-supported cobalt catalyst by water in F-T synthesis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 264, 15 April 2016, Pages 91–97
Authors
, , , , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us