Ethane hydrogenolysis catalyzed by W(100)

The ability of the (100) face of tungsten to catalyze ethane hydrogenolysis has been investigated. At 573 K, methane is formed with a specific activity of 0.01 molecules per surface tungsten atom per second (100 Torr H 2, 1 Torr C 2H 6), with no evidence of catalyst deactivation even after several h...

Full description

Saved in:
Bibliographic Details
Published in:Journal of catalysis 1986-04, Vol.98 (2), p.487-490
Main Authors: Wax, Michael J., Kelley, Richard D., Madey, Theodore E.
Format: Article
Language:English
Subjects:
Catalysis
Catalysts: preparations and properties
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
General. Nomenclature, chemical documentation, computer chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The ability of the (100) face of tungsten to catalyze ethane hydrogenolysis has been investigated. At 573 K, methane is formed with a specific activity of 0.01 molecules per surface tungsten atom per second (100 Torr H 2, 1 Torr C 2H 6), with no evidence of catalyst deactivation even after several hundred turnovers. Hydrogenolysis is approximately first-order in ethane and half-order in dihydrogen, and displays an apparent activation energy of 27 kcal/mol. Negligible activity is displayed by clean tungsten; the true catalyst appears to be a monolayer of carbide which is formed on the surface of the tungsten on exposure to the reactants.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(86)90336-2