Effect of the nature of platinum group metals on kinetics and selectivity of the hydrogenation of 3-methyl-4-penten-1-yn-3-ol under hydrogen pressure

Journal Article · Sat Nov 01 04:00:00 EST 1986 · Dokl. Phys. Chem. (Engl. Transl.); (United States)

OSTI ID:5795870

Sokol'skii, D V; Omarkulov, T O; Zhubanova, L K; Chernysh, G P

Considerable theoretical and practical interest is found in the kinetics and selectivity of the hydrogenation of 3-methyl-4-penten-1-yn-3-ol (tertiary acetylenic carbinol C/sub 6/, TAC C/sub 6/). The authors studied the effect of the nature of the metal catalyst on the kinetic features and selectivity of the hydrogenation of TAC C/sub 6/. The hydrogenation of tertiary acetylenic carbinol C/sub 6/ was carried out in the presence of Pt, Pd, Ni, Ru, and Rh blacks in 96% ethanol in a high-pressure system with broad variation of the experimental conditions. In all cases, the reaction rate upon increase in the hydrogen pressure from 1.01 to 10.10 MPa increases and the reaction is close to first-order in hydrogen. In the presence of Pt and Ru blacks and NiR, the hydrogenation of TAC C/sub 6/ is zero-order relative to the substrate and hydrogen pressures 2.02 and 8.08 MPa. The reaction converts from first-order to zero-order relative to the substrate with increasing hydrogen pressure from 2.02 to 8.08 MPa. In the case of rhenium black, the opposite is observed.

• Research Organization: Institute of Organic Catalysis and Electrochemistry, Alma-Ata, USSR
• OSTI ID: 5795870
• Journal Information: Dokl. Phys. Chem. (Engl. Transl.); (United States), Journal Name: Dokl. Phys. Chem. (Engl. Transl.); (United States) Vol. 288:1-3; ISSN DKPCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALKYNES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
ELEMENTS
HETEROGENEOUS CATALYSIS
HYDROCARBONS
HYDROGEN
HYDROGENATION
HYDROXY COMPOUNDS
KINETICS
MATERIALS TESTING
METALS
NICKEL
NONMETALS
ORGANIC COMPOUNDS
PALLADIUM
PARTIAL PRESSURE
PLATINUM
PLATINUM METALS
PRESSURE DEPENDENCE
REACTION KINETICS
RHODIUM
RUTHENIUM
STOICHIOMETRY
TESTING
TRANSITION ELEMENTS
YIELDS