Selectivity of palladium catalysts in synthesis gas reactions

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(83)90114-8· OSTI ID:5153498

Driessen, J M; Poels, E K; Hindermann, J P; Ponec, V

Reactions of CO/H/sub 2/ mixtures have been studied on a series of Pd/SiO/sub 2/ catalysts (2 wt% Pd) with and without a promoting additive. Mg and La compounds were used as promoters. It appeared that promoters (i) influence the activity of the catalysts and (ii) increase the selectivity for oxygenates and suppress the selectivity for CH/sub 4/. The activity for methanol synthesis is linearly correlated with the amount of Pd extractable from the reduced and used catalysts as Pd-acetylacetonate. Since it is known that promoters also create a new type of ionic adsorption center for CO and NO adsorption, it is concluded that Pd ions are indeed the centers for activation of CO toward methanol whereas Pd metal supplies hydrogen atoms for hydrogenation.

• Research Organization: State Univ. of Leiden, Netherlands
• OSTI ID: 5153498
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 82:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

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10 SYNTHETIC FUELS
ALCOHOLS
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
HYDROGEN
HYDROXY COMPOUNDS
METALS
METHANATION
METHANE
METHANOL
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PLATINUM METALS
STOICHIOMETRY
SYNTHESIS GAS
TRANSITION ELEMENTS