Absorption of gas-phase atomic hydrogen by Si(100): Effect of surface atomic structures

2001 ◽  
Vol 79 (1) ◽  
pp. 36-38 ◽  
Author(s):  
Jae Yeol Maeng ◽  
Sehun Kim ◽  
S. K. Jo ◽  
W. P. Fitts ◽  
J. M. White
Keyword(s):  
Gas Phase ◽  
Atomic Hydrogen ◽  
Atomic Structures ◽  
Effect Of Surface

Gas Phase Atomic Hydrogen-Induced Hydrogenation of Cyclohexene on the Ni(100) Surface

1997 ◽  
Vol 101 (18) ◽  
pp. 3540-3546 ◽  
Author(s):  
Kyung-Ah Son ◽  
John L. Gland
Keyword(s):  
Gas Phase ◽  
Atomic Hydrogen

Effect of surface on the gas-phase oxidation of methanol catalysed by nitric oxide

1964 ◽  
Vol 17 (5) ◽  
pp. 539
Author(s):  
JJ Batten
Keyword(s):  
Nitric Oxide ◽  
Gas Phase ◽  
Marked Effect ◽  
Volume Ratio ◽  
Oxidation Of Methanol ◽  
Inorganic Substances ◽  
Phase Oxidation ◽  
Gas Phase Oxidation ◽  
Kinetics Of ◽  
Effect Of Surface

A study has been made of the effect of the surface-to-volume ratio of the reaction vessel and of coatings of various inorganic substances on the vessel walls on the gas-phase oxidation of methanol catalysed by nitric oxide. The results show that, whereas packing the vessel does not have a marked effect on the rate, the kinetics of the reaction are profoundly influenced by the nature of the surface. The results suggest that the methanol-oxidation chains are initiated at the surface by reaction between methanol and nitrogen dioxide, and that HO2 radicals play an important role in the subsequent chain reaction.

Gas-phase reaction of iron carbonyl cations with atomic hydrogen and atomic nitrogen

1992 ◽  
Vol 114 (2) ◽  
pp. 771-773 ◽  
Author(s):  
Helene Mestdagh ◽  
Christian Rolando ◽  
Michel Sablier ◽  
Nicolas Billy ◽  
Gerard Gouedard ◽  
...  
Keyword(s):  
Gas Phase ◽  
Atomic Hydrogen ◽  
Iron Carbonyl ◽  
Phase Reaction ◽  
Atomic Nitrogen ◽  
Gas Phase Reaction

Direct Absorption of Gas-Phase Atomic Hydrogen by Si(100): A Narrow Temperature Window

2000 ◽  
Vol 85 (10) ◽  
pp. 2144-2147 ◽  
Author(s):  
S. K. Jo ◽  
J. H. Kang ◽  
X.-M. Yan ◽  
J. M. White ◽  
J. G. Ekerdt ◽  
...  
Keyword(s):  
Gas Phase ◽  
Atomic Hydrogen ◽  
Direct Absorption ◽  
Temperature Window

Subsurface Hydrogen at Pd(100) Induced by Gas-Phase Atomic Hydrogen

1999 ◽  
Vol 103 (37) ◽  
pp. 7876-7881 ◽  
Author(s):  
H. Okuyama ◽  
T. Nakagawa ◽  
W. Siga ◽  
N. Takagi ◽  
M. Nishijima ◽  
...  
Keyword(s):  
Gas Phase ◽  
Atomic Hydrogen

A study of the properties of hydrogen films on tungsten by the method of contact potentials

1937 ◽  
Vol 33 (3) ◽  
pp. 394-402 ◽  
Author(s):  
R. C. L. Bosworth
Keyword(s):  
Dipole Moment ◽  
Hydrogen Atom ◽  
Gas Phase ◽  
Atomic Hydrogen ◽  
The Other ◽  
Condensation Coefficient ◽  
Effective Dipole Moment ◽  
Tungsten Atom ◽  
Contact Potential ◽  
Hydrogen Molecules

In a study of the properties of hydrogen on tungsten by the method of contact potentials the following points have been established:(1) The contact potential of a 92% covered surface of hydrogen on tungsten against bare tungsten is 1·04 V., and the Richardson constants for such a surface are, approximately,A = 30, b = 5·60 V.(2) A film of deuterium is 20 m V. positive relative to a similar hydrogen film.(3) Over the range of temperatures and pressures used by Bryce in a study of the production of atomic hydrogen the films are nearly saturated, so that the production of atomic hydrogen is primarily due to a molecule striking a bare tungsten atom, one atom being adsorbed and the other going into the gas phase.(4)The condensation coefficient for hydrogen molecules on cold tungsten is 0·01.(5) The effective dipole moment of each hydrogen atom on the surface is −0·42 Debye unit and is independent of the fraction of the surface covered.

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