Effects of metal-support interactions on the synthesis of methanol over palladium

Journal Article · Sat Aug 01 00:00:00 EDT 1981 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(81)90341-9· OSTI ID:6269228

Ryndin, Yu A ^[1]; Hicks, R F; Bell, A T; Ermakov, Yu I

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1. Lawrence Berkeley Lab., CA

The synthesis of methanol and other products from CO and H/sub 2/ was studied over Pd catalysts prepared by adsorption of Pd(..pi..-C/sub 3/H/sub 5/)/sub 2/ on MgO, ZnO, La/sub 2/O/sub 3/, ..gamma..-Al/sub 2/O/sub 3/, SiO/sub 2/, TiO/sub 2/, and ZrO/sub 2/ as well as over a SiO/sub 2/-supported Pd catalyst prepared from PdCl/sub 2/ and Pd black. Both the activity and selectivity of Pd were affected strongly by the nature of the support and the composition of the Pd precursor. The specific activity for methanol synthesis decreased in the order Pd/La/sub 2/O/sub 3/ much greather than Pd/SiO/sub 2/ (derived from PdCl/sub 2/) > Pd/ZrO/sub 2/ > Pd/ZnO approx. = Pd/MgO > PdTiO/sub 2/ > Pd/Al/sub 2/O/sub 3/ approx. = Pd/SiO/sub 2/ (derived from Pd(..pi..-C/sub 3/H/sub 5/)/sub 2/) much greater than Pd black while the specific activity for hydrocarbon synthesis decreased in the order Pd/TiO/sub 2/ > Pd/ZrO/sub 2/ > Pd/La/sub 2/O/sub 3/ greater than or equal to Pd/Al/sub 2/O/sub 3/ approx. = Pd/SiO/sub 2/ (derived from PdCl/sub 2/) greater than or equal to Pd/SiO/sub 2/ (derived from Pd (..pi..-C/sub 3/H/sub 5/)/sub 2/) approx. = Pd black much greater than Pd/MgO much greater than Pd/ZnO. Dimethyl ether production was observed over four of the catalysts and the activity for formation of this product decreased in the order Pd/Al/sub 2/O/sub 3/ much greater than Pd/TiO/sub 2/ greater than or equal to Pd/MgO approx. = Pd/ZrO/sub 2/. The effects of support composition on the catalytic properties of Pd are discussed in the light of current ideas concerning metal-support interactions and the acid-base properties of the support.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6269228
• Journal Information: J. Catal.; (United States), Vol. 70:2
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM OXIDES
SORPTIVE PROPERTIES
CATALYSTS
COMPARATIVE EVALUATIONS
LANTHANUM OXIDES
MAGNESIUM OXIDES
METHANOL
ADSORPTION
SYNTHESIS
PALLADIUM
CATALYTIC EFFECTS
SILICA
TITANIUM OXIDES
ZINC OXIDES
ZIRCONIUM OXIDES
CARBON MONOXIDE
CATALYST SUPPORTS
CHEMICAL REACTIONS
HYDROGEN
PALLADIUM CHLORIDES
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
LANTHANUM COMPOUNDS
MAGNESIUM COMPOUNDS
METALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM COMPOUNDS
PLATINUM METALS
RARE EARTH COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SURFACE PROPERTIES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZINC COMPOUNDS
ZIRCONIUM COMPOUNDS
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