Deactivation of alumina-platinum catalysts with promoting additives in dehydrogenation of higher n-paraffins

Journal Article · Fri May 20 04:00:00 EDT 1983 · Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)

OSTI ID:5304482

Tyupaev, A P; Timofeeva, E A; Isagulyants, G V

Alumina-platinum catalysts (APC) containing additives are used to obtain the higher linear monoolefins by catalytic dehydrogenation. Previously it was shown that Li raises the selectivity but lowers the total activity of APC, while In raises both factors. Re has also been added to dehydrogenation APC. The purpose of the present paper is to compare the stability of APC contaning Li, Re, and In with one other, and also to compare the stability with the initial activity of the promoted catalysts. For the example of n-dodecane it was shown that in the dehydrogenation of the higher n-paraffins the stability of catalysts containing Li, Re, and In as additives increases in the order: Li > Re > In. The stability of the studied catalysts increases in a similar manner, while the selectivity in coke is the opposite of their activity.

• Research Organization: Academy of Sciences of the USSR, Moscow
• OSTI ID: 5304482
• Journal Information: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Journal Name: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States) Vol. 31:11; ISSN BACCA
• 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)
ADDITIVES
ALKALI METALS
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DEACTIVATION
DEHYDROGENATION
DODECANE
ELEMENTS
HYDROCARBONS
INDIUM
LITHIUM
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
RHENIUM
SPECIFICITY
STABILITY
TRANSITION ELEMENTS