Conversion of cyclohexane and n-heptane on Pt-Pb/Al/sub 2/O/sub 3/ and Pt-Sn/Al/sub 2/O/sub 3/ bimetallic catalysts

Journal Article · Sun Mar 01 04:00:00 EST 1981 · J. Catal.; (United States)

OSTI ID:6038288

Voelter, J; Lietz, G; Uhlemann, M; Hermann, M

Using Pt-Pb and Pt-Sn catalysts supported on eta-Al/sub 2/O/sub 3/ the dehydrogenation of cyclohexane, the dehydrocyclization of n-heptane, the coke deposition during the conversion n-heptane, and the chemisorption of hydrogen were studied. Additions of Pb or Sn have similar effects. On the bimetallic catalysts the dehydrogenation of cyclohexane is decreased at low temperature, and increased at high temperature; the dehydrocyclization of n-heptane can be increased or decreased in dependence on the hydrogen pressure and the reaction temperature. The efficiency of the bimetallic catalysts is determined by the reaction conditions. Under mild conditions the reactions are inhibited, whilst under severe, deactivating, and destructive conditions the aromatization can be increased, whereas the hydrogenolysis is decreased. A modification of the Pt sites by the second metal and by the coke is discussed.

• Research Organization: Zentralinstitut fuer Physikalische Chemie, Berlin, Germany
• OSTI ID: 6038288
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 68:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COKE
CONVERSION
CYCLOALKANES
CYCLOHEXANE
DEHYDROGENATION
ELEMENTS
HEPTANE
HYDROCARBONS
HYDROGEN
LEAD
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
REFORMER PROCESSES
SEPARATION PROCESSES
SORPTION
SYNTHESIS
TIN
TRANSITION ELEMENTS