Hydrogen reaction with carbon and nickel evaporated films

✍ Scribed by V.R Deitz; E.F McFarlane

• Publisher: Elsevier Science
• Year: 1964
• Tongue: English
• Weight: 744 KB
• Volume: 1
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(64)90065-x

✦ Synopsis

Stacked films of carbon and nickel were prepared in vacuum by intermittent evaporation from separate filaments and a few properties of these films studied. The surface areas were determined by krypton adsorption. The temperature was progressively increased from that of liquid nitrogen, at which the films were prepared, to 3OO'C and the reaction of hydrogen with the stacked film was followed at each temperature by pressure change and by gas-phase composition. Methane was formed in appreciable amounts; pure carbon films under the same conditions did not react with hydrogen to form methane. The deliberate introduction of oxygen poisoned the hydrogen reaction with stacked films. The yield of methane is directly proportional to the hydrogen chemisorbed at the temperatures studied (281300°C).