Activity and stability of bimetallic catalysts in the dehydrogenation of n-dodecane
A systematic study of the effect of group I-VI elements (Cu, Zn, Ga, Ge, S, S subgroups) on the activity and stability of aluminum-platinum catalysts in the reaction of dehydrogenation of n-dodecane was conducted. Catalysts containing 0.35 wt. % Pt on ..gamma..-Al/sub 2/O/sub 3/ (A-1 grade) were prepared. Nitrates (Cu, Zn, Cd, In, Tl, Pb) and chlorides (Ge, Sn) and selenic acid were used as the starting compounds for application of the promoters. In studying the activity and stability of bimetallic aluminum-platinum catalysts promoted with elements from groups I-VI, it was shown that the increase in the yield of olefins in dehydrogenation of n-dodecane is due to an increase in the specific activity of the Pt. The existence of tolerance of bimetallic catalysts containing Cu, Cd, Sn, Pb, Ge, and Se to coke was experimentally demonstrated. It was shown that the increase in the stability of the catalysts in conditions of intense coke formation is due to prevention of carbonization of the platinum.
- Research Organization:
- Lenneftekhim Scientific and Industrial Association (USSR)
- OSTI ID:
- 5922903
- Journal Information:
- J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 60:9; ISSN JAPUA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BIMETALS
CADMIUM
CARBONIZATION
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COKE
COKING
COPPER
DEACTIVATION
DECOMPOSITION
DEHYDROGENATION
DODECANE
ELEMENTS
GERMANIUM
HETEROGENEOUS CATALYSIS
HYDROCARBONS
INDIUM
LEAD
MATERIALS TESTING
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PROMOTERS
SELENIUM
SEMIMETALS
STABILITY
TESTING
THALLIUM
TIN
TRANSITION ELEMENTS
YIELDS
ZINC