On the influence of sulfur on the platinum/iridium bimetallic catalysts in n-hexane/hydrogen reactions

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90039-0· OSTI ID:6958395

Dees, M J; Ponec, V ^[1]

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1. Leiden Univ. (Netherlands)

The reaction of n-hexane and hydrogen have been studied over silica- and {gamma}-alumina-supported monometallic and bimetallic Pt/Ir catalysts. Temperature-programmed reduction and X-ray diffraction clearly indicated alloy formation in the silica-supported catalysts. Changing the Ir content in the bulk of the catalyst resulted in a dramatic shift in selectivity due to the hydrogenolytic activity of Ir. However, after sulfurization all catalysts containing Ir showed a Pt-like behavior with respect to the selectivity. The increased yields of the sulfided Ir and pt/Ir catalysts, when compared with the sulfided Pt catalysts, might be due to the relatively high dehydrogenating activity of Ir.

• OSTI ID: 6958395
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 115:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BIMETALS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL TAR OILS
COHERENT SCATTERING
CONTROL
DIFFRACTION
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEXANE
HYDROCARBONS
IRIDIUM
IRIDIUM ALLOYS
IRIDIUM COMPOUNDS
METALS
MINERALS
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PLATINUM
PLATINUM ALLOYS
PLATINUM COMPOUNDS
PLATINUM METAL ALLOYS
PLATINUM METALS
PLATINUM SULFIDES
QUANTITY RATIO
REDUCTION
REFORMER PROCESSES
REFRACTORY METAL COMPOUNDS
SCATTERING
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE CONTROL
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
YIELDS