Dissociative adsorption and hydrogenolysis of ethane over clean and Ni-covered Pt(111)

Journal Article · Thu Jun 28 00:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100376a033· OSTI ID:6519256

Rodriguez, J A; Goodman, D W ^[1]

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1. Texas A M Univ., College Station (USA)

The hydrogenolysis of ethane has been investigated on clean and Ni-covered Pt(111) at reactant partial pressures between 0.5 and 4 Torr of ethane and between 80 and 270 Torr of hydrogen and for surface temperatures from 550 to 640 K. On clean Pt(111) the hydrogenolysis reaction proceeds with an activation energy of 36.6 kcal/mol and reaction orders in C{sub 2}H{sub 6} and H{sub 2} pressures of 1 and {minus}1.8, respectively. the rate of ethane hydrogenolysis increases when Ni is added to the surface. The catalytic activity of a Pt(111) surface with the equivalent of a monolayer of Ni is higher than that observed on Pt(111) but lower than those reported for Ni(100) and Ni(111). Our results indicate that Ni/Pt(111) surfaces are able to hydrogenate hydrocarbon fragments faster than Pt(111).

• OSTI ID: 6519256
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:13; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKANES
CATALYSTS
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
ELEMENTS
ETHANE
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGENATION
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM
PLATINUM METALS
SORPTION
SURFACE PROPERTIES
TRANSITION ELEMENTS