The effect of catalyst preparation on the performance of alumina-supported ruthenium catalysts: II. The impact of residual chloride

• Published in: Journal of catalysis 1989-07, Vol.118 (1), p.218-226
• Main Authors: Mieth, Jeffrey A., Schwarz, James A.
• Format: Article
• Language: English
• Subjects: 01 COAL, LIGNITE, AND PEAT; 010408 - Coal, Lignite, & Peat- C1 Processes- (1987-); ALUMINIUM COMPOUNDS; ALUMINIUM OXIDES; CARBON COMPOUNDS; CARBON MONOXIDE; CARBON OXIDES; CATALYST SUPPORTS; CATALYSTS; CATALYTIC EFFECTS; CHALCOGENIDES; CHEMICAL PREPARATION; CHEMICAL REACTIONS; Chemistry; CHLORIDES; CHLORINE COMPOUNDS; ELEMENTS; Exact sciences and technology; FISCHER-TROPSCH SYNTHESIS; General and physical chemistry; HALIDES; HALOGEN COMPOUNDS; HYDROGENATION; IMPREGNATION; METALS; METHANATION; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; POISONING; PROMOTERS; RUTHENIUM; SURFACE PROPERTIES; SYNTHESIS; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; TRANSITION ELEMENTS
• ISSN: 0021-9517; 1090-2694
• DOI: 10.1016/0021-9517(89)90312-6

The impact of residual chloride on the properties and performance of a series of Ru Al 2O 3 catalysts has been studied. This work departs from previous studies in that it examines the poisoning and promoting effects of this electronegative element in CO hydrogenation as a function of the dispersion of the catalyst. The dispersion and structure of the particles are regulated by the choice of the precursor used during preparation and by the impregnation conditions. We find that, in general, chloride residues poison catalysts with a high dispersion but provide a promotional effect for catalysts with a poor dispersion.