The effect of catalyst preparation on the performance of alumina-supported ruthenium catalysts. I. The impact of catalytic precursor on particle size and catalytic activity

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90311-4· OSTI ID:7161132

Mieth, J A; Schwarz, J A ^[1]

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1. Syracuse Univ., NY (USA)

The effect of preparation method and the choice of metallic precursor on the performance of a series of Ru/Al{sub 2}O{sub 3} catalysts were studied. Wet impregnation and incipient wetness were the methods employed; ruthenium nitrosylnitrate and ruthenium trichloride were the reagents. In the latter case, either Ru(III)/Ru(IV) chlorospecies or mixtures of Ru(II) hydrazine complexes were the catalytic precursors. The series of Ru/Al{sub 2}O{sub 3} catalysts, with metal loadings from 0.7-5% by weight, were subjected to a battery of performance tests: CO temperature-programmed reaction, steady-state CO hydrogenation, and temperature-programmed surface reaction. The methanation activity and carbon deposited during steady-state reaction varied systematically with the dispersion of Ru on the alumina. High rates of methane production were found on catalysts containing a large reservoir of carbon-containing reaction intermediates. The performance of these catalysts depended on the precursor used in their preparation. The effects of weight loading, method of preparation, and variations in the impregnant pH were small within a group prepared from a common precursor.

• DOE Contract Number: FG02-87ER13650
• OSTI ID: 7161132
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 118:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010408* -- Coal
Lignite
& Peat-- C1 Processes-- (1987-)
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
COMPLEXES
CONTROL
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
HYDROCARBONS
HYDROGENATION
IMPREGNATION
METALS
METHANATION
METHANE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PH VALUE
PLATINUM METALS
RUTHENIUM
RUTHENIUM COMPLEXES
SIZE
SYNTHESIS
TEMPERATURE CONTROL
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS