The ignition behavior in the oxidation of four simple alkanes (methane,
ethane, propane and isobutane) with air on a platinum-foil catalyst,
as well as that of ethane/air mixtures on four noble-metal foil catalysts
(Pt, Pd, Rh, and Ir) was studied at atmospheric pressure over the
entire range of fuel-to-air ratios. While, Pd showed the widest range
of surface flammability, ignition temperatures for ethane/air mixtures
were lowest on Pt. Both, Rh and Ir deactivated rapidly under fuel-lean
conditions and ignited considerably higher than Pd and Pt. The surface
ignition temperatures were found to correlate well with the C-H bond
energy of the hydrocarbon and the metal-oxygen bond energy of the
noble metal. A very simple analytical model was able to reproduce
the dependence of surface ignition temperatures on fuel-to-air ratios,
yielding apparent activation energies for the surface reactions and
indicating an oxygen-covered surface before catalytic ignition due
to strong site competition between the hydrocarbon and oxygen on
the catalyst surface.
%0 Journal Article
%1 Veser1999
%A Veser, Gotz
%A Ziauddin, Murtaza
%A Schmidt, Lanny D.
%D 1999
%J Catalysis Today
%K Catalytic Homogeneous-heterogeneous Ignition/extinction Noble catalysts hydrocarbon metal oxidation reactions
%N 1-4
%P 219-228
%T Ignition in alkane oxidation on noble-metal catalysts
%U http://www.sciencedirect.com/science/article/B6TFG-3Y9MJH3-T/2/fff527af08714e167fe1d61c03742207
%V 47
%X The ignition behavior in the oxidation of four simple alkanes (methane,
ethane, propane and isobutane) with air on a platinum-foil catalyst,
as well as that of ethane/air mixtures on four noble-metal foil catalysts
(Pt, Pd, Rh, and Ir) was studied at atmospheric pressure over the
entire range of fuel-to-air ratios. While, Pd showed the widest range
of surface flammability, ignition temperatures for ethane/air mixtures
were lowest on Pt. Both, Rh and Ir deactivated rapidly under fuel-lean
conditions and ignited considerably higher than Pd and Pt. The surface
ignition temperatures were found to correlate well with the C-H bond
energy of the hydrocarbon and the metal-oxygen bond energy of the
noble metal. A very simple analytical model was able to reproduce
the dependence of surface ignition temperatures on fuel-to-air ratios,
yielding apparent activation energies for the surface reactions and
indicating an oxygen-covered surface before catalytic ignition due
to strong site competition between the hydrocarbon and oxygen on
the catalyst surface.
@article{Veser1999,
abstract = {The ignition behavior in the oxidation of four simple alkanes (methane,
ethane, propane and isobutane) with air on a platinum-foil catalyst,
as well as that of ethane/air mixtures on four noble-metal foil catalysts
(Pt, Pd, Rh, and Ir) was studied at atmospheric pressure over the
entire range of fuel-to-air ratios. While, Pd showed the widest range
of surface flammability, ignition temperatures for ethane/air mixtures
were lowest on Pt. Both, Rh and Ir deactivated rapidly under fuel-lean
conditions and ignited considerably higher than Pd and Pt. The surface
ignition temperatures were found to correlate well with the C-H bond
energy of the hydrocarbon and the metal-oxygen bond energy of the
noble metal. A very simple analytical model was able to reproduce
the dependence of surface ignition temperatures on fuel-to-air ratios,
yielding apparent activation energies for the surface reactions and
indicating an oxygen-covered surface before catalytic ignition due
to strong site competition between the hydrocarbon and oxygen on
the catalyst surface.},
added-at = {2007-11-22T09:11:49.000+0100},
author = {Veser, Gotz and Ziauddin, Murtaza and Schmidt, Lanny D.},
biburl = {https://www.bibsonomy.org/bibtex/2c2f5262e1353f082506ec67792e74b4c/tboehme},
endnotereftype = {Journal Article},
interhash = {172fa4f85ca0c7da307f1046d681979f},
intrahash = {c2f5262e1353f082506ec67792e74b4c},
journal = {Catalysis Today},
keywords = {Catalytic Homogeneous-heterogeneous Ignition/extinction Noble catalysts hydrocarbon metal oxidation reactions},
number = {1-4},
pages = {219-228},
shorttitle = {Ignition in alkane oxidation on noble-metal catalysts},
timestamp = {2007-11-22T09:12:08.000+0100},
title = {Ignition in alkane oxidation on noble-metal catalysts},
url = {http://www.sciencedirect.com/science/article/B6TFG-3Y9MJH3-T/2/fff527af08714e167fe1d61c03742207 },
volume = 47,
year = 1999
}