Conversion of n-hexane over monofunctional supported and unsupported PtSn catalysts

Journal Article · Thu May 01 04:00:00 EDT 1980 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(80)90065-2· OSTI ID:6198656

Dautzenberg, F M; Helle, J N; Biloen, P; Sachtler, W M.H.

Alumina- and silica-supported platinum and platinum/tin and the unsupported alloys Pt/sub 3/Sn, PtSn, Pt/sub 2/Sn/sub 3/, and PtSn/sub 2/ were prepared by various methods. Oxygen-hydrogen titration and temperature-programed reduction confirmed that all tin reduced to the zero-valent state (except for a small amount that interacted with the alumina supports) and that it was present in bimetallic clusters or alloys. In tests on n-hexane conversion at 520/sup 0/C, 3 bar, and 2:1 hydrogen-hexane, the addition of tin increased the catalyst stability (i.e., reduced coke deposition), decreased methylcyclohexane formation, and increased benzene formation. The results were consistent with the assumptions that the tin acted mainly as diluent, i.e., decreased the number of large platinum ensembles and increased the number of small platinum ensembles, and at the test temperature, secondary gas-phase reactions were significant.

• Research Organization: Shell Res. B.V.
• OSTI ID: 6198656
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 63:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
ALLOYS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CONVERSION
DATA
EXPERIMENTAL DATA
HEXANE
HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
REDUCTION
STABILITY
TIN ALLOYS
YIELDS