STM study of hydroxyl formation atO∕Ag(110)

2006 ◽  
Vol 74 (23) ◽  
Author(s):  
L. Savio ◽  
M. Smerieri ◽  
L. Vattuone ◽  
A. Gussoni ◽  
C. Tassistro ◽  
...  
Keyword(s):  
Hydroxyl Formation

A method of surface analysis and its application to reduced nickel powder

1957 ◽  
Vol 242 (1231) ◽  
pp. 534-543 ◽  
Keyword(s):  
Surface Area ◽  
Surface Analysis ◽  
Nickel Powder ◽  
Surface Adsorption ◽  
Metal Powders ◽  
Complex Surfaces ◽  
Stable Layer ◽  
Adsorptive Properties ◽  
Krypton Adsorption ◽  
Hydroxyl Formation

The possibility of analyzing the complex surfaces of reduced metals by comparing their adsorptive properties with the known behaviour of evaporated films has been explored by experiments on nickel powder. Nickel prepared by reduction of the oxide in hydrogen at 450°C for periods up to 12h has been shown by measurement of hydrogen and krypton adsorption at -183°C to have a surface containing up to 37% of clean nickel atoms. Traces of silica introduced during the preparation of the powder possibly account for the rest of the surface. Adsorption of hydrogen at -183°C is effectively complete within ½ min at about 10 -5 mm, and all gas is desorbed by evacuation at 450°C. Oxide is probably not a significant impurity, because the powder does not exhibit the slow adsorption at 20°C and above which is characteristic of incompletely reduced nickel. Such activated adsorption can be restored by the addition of oxygen and eliminated again by further reduction; its stoichiometry suggests that the process consists of hydroxyl formation. Reduction of the sulphide gives nickel of appreciable surface area but completely inert to hydrogen; presumably a stable layer of sulphide is retained. Some thermodynamic and kinetic problems involved in the preparation of metal powders with surfaces of known purity are briefly discussed in the light of these results.

Surface hydroxyl formation on vacuum-annealed TiO2(110)

2001 ◽  
Vol 79 (17) ◽  
pp. 2716-2718 ◽  
Author(s):  
Toshiaki Fujino ◽  
Mitsuhiro Katayama ◽  
Katsuhiko Inudzuka ◽  
Tomohisa Okuno ◽  
Kenjiro Oura ◽  
...  
Keyword(s):  
Surface Hydroxyl ◽  
Hydroxyl Formation

Transient hydroxyl formation from water on oxygen-covered Au(111)

2008 ◽  
Vol 129 (6) ◽  
pp. 064702 ◽  
Author(s):  
R. G. Quiller ◽  
T. A. Baker ◽  
X. Deng ◽  
M. E. Colling ◽  
B. K. Min ◽  
...  
Keyword(s):  
Hydroxyl Formation

Hydrogen Spillover Enhanced Hydroxyl Formation and Catalytic Activity Toward CO Oxidation at the Metal/Oxide Interface

2015 ◽  
Vol 21 (11) ◽  
pp. 4252-4256 ◽  
Author(s):  
Yuekang Jin ◽  
Guanghui Sun ◽  
Feng Xiong ◽  
Liangbing Ding ◽  
Weixin Huang
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Co Oxidation ◽  
Hydrogen Spillover ◽  
Oxide Interface ◽  
Hydroxyl Formation

Hydroxyl Formation in Silica Tubes and Layers due to Oxy–Hydrogen Flames

1991 ◽  
Vol 244 ◽  
Author(s):  
J. Kirchhof ◽  
G. Braun
Keyword(s):  
High Resolution ◽  
Laser Spectroscopy ◽  
Formation Mechanism ◽  
Quartz Glass ◽  
Hydrogen Penetration ◽  
Glass Tubes ◽  
Hydroxyl Formation

ABSTRACTA novel kind of hydroxyl formation during the processing of quartz glass tubes with oxy-hydrogen burners was found and studied in detail by high-resolution laser spectroscopy. The formation mechanism involving hydrogen penetration from the flame and following reactions is discussed.

Copper reduction and hydroxyl formation by hydrogen process in alumino-silicate glasses

2011 ◽  
Vol 72 (3) ◽  
pp. 151-157 ◽  
Author(s):  
Kleine Guilherme ◽  
Tomokatsu Hayakawa ◽  
Masayuki Nogami
Keyword(s):  
Silicate Glasses ◽  
Alumino Silicate ◽  
Hydroxyl Formation
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