ESR study of coked platinum catalysts used for dehydrogenation of paraffin hydrocarbons

Journal Article · Fri May 20 00:00:00 EDT 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6180781

Kogan, S B; Gorodetskaya, I V; Podkletnova, N M; Tysovskii, G I; Bursian, N R

A comparative study of coke-coated mono- and bimetallic supported platinum catalysts, based on the intensity of the ESR signal of carbon, has been carried out. It was shown that the specific intensity of the ESR signal of carbon is determined systematically by the nature of the catalyst. The use of In, Sn, or a mixture of Re and S as promoters in alumina-platinum catalysts leads to predominant deposition of coke on the support with formation of condensed aromatic systems, which accounts for the resistance of bimetallic dehydrogenation catalysts to deactivation by coke.

• OSTI ID: 6180781
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 60:12; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ANTHRACENE
AROMATICS
BIMETALS
CARBONIZATION
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COKE
COKING
CONDENSED AROMATICS
DEACTIVATION
DECOMPOSITION
DEHYDROGENATION
DEPOSITS
DODECANE
ELECTRON SPIN RESONANCE
ELEMENTS
HYDROCARBONS
INDIUM
MAGNETIC RESONANCE
METALS
NONMETALS
ORGANIC COMPOUNDS
PLATINUM
PLATINUM METALS
PROMOTERS
RESONANCE
RHENIUM
SPECTRA
SULFUR
SURFACE PROPERTIES
TIN
TRANSITION ELEMENTS