Ethane hydrogenolysis and carbon monoxide hydrogenation over niobia-supported nickel catalysts: a hierarchy to rank strong metal-support interaction

Journal Article · Sun Apr 01 04:00:00 EST 1984 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(84)90377-4· OSTI ID:6726867

Ko, E I; Hupp, J M; Wagner, N J

Ethane hydrogenolysis and carbon monoxide hydrogenation were studied over two niobia (Nb/sub 2/O/sub 5/)-supported nickel catalysts, containing 2 and 10 wt% nickel, which had been reduced in hydrogen at 573 or 773 K for 1 h. Compared to silica-supported nickel catalysts, these samples had lower ethane hydrogenolysis activity but higher CO hydrogenation activity. For some samples a different experimental rate law for ethane hydrogenolysis was observed. In CO hydrogenation, all samples showed a shift in product distribution to hydrocarbons higher than methane, and olefinic products were detected. These observations were attributed to strong metal-support interaction (SMSI). The use of these chemical probes identified different manifestation of SMSI that depend on crystallite size and reduction treatment. On the basis of these manifestations, a hierarchy consisting of five stages was developed to rank the extent of interaction in Ni/Nb/sub 2/O/sub 5/ catalysts. A mechanism of SMSI was proposed for a physical explanation of this hierarchy.

• Research Organization: Carnegie-Mellon Univ., Pittsburgh, PA
• OSTI ID: 6726867
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 86:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
090121 -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
ETHANE
HYDROCARBONS
HYDROGENATION
HYDROLYSIS
LYSIS
METALS
NICKEL
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SOLVOLYSIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS