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Hydrogenation of linear dimers of piperylene on Pd-catalysts
ABSTRA~TS
OF PAPERS PUBLISHED Th
NEFTEKHIMIYA Vol. 2S No.6
HYDROGENATION OF LINEAR DIMERS OF PIPERYLENE ON Pd-CATALYSTS
L. I, Gvinter, V.·M. Ignatov, V. Yu. Yegorova, A. L. Klyachko P. S. Belov and L. Kh. Freidlin, Neftekhimiya 25, No.6, 733-738, 1985. HYDROGENATION of linear piperylene dimers on Pd-catalysts takes' place in stages forming mainlY dienes (up to SO%) in the first stage of the reaction. The activity and selectivity of catalyst ~ction are determined by the type of metal and each . is independent of the type and macrostructure of the carrier. The rate of hydrogenation of piperylene dimers varies according to the solvent type. The solvent has praCtically no effcct on the course and selectivity of the reaction. On Pd-catalysts 4-methylnona-2,5,7-triene undergoes selective hydrogenation to form a diene mixture (4-methylnona-2,5-, -2,6- and -2,7-dienes) free from conjugated C=C bonds (90 to 92%). CATALYTIC HYDROGENATION OF KETONES INTO' ALCOHOLS IN A FLOW REACTOR
L.S.. Glebov, G. A. Kliger, A. A. Levitskii and S. M. Loktev, Neftekhimiya 25, No.6, 750-754, 1985. . DURING hydrogenation of ketones of different structure over a fused iron catalyst in an integral flow reactor, the indepe!ldence of the reaction rate on the degree of conversion of the initial ketone was shown to depend on temperature variation in the reaction volume. Temperatures were calculated for hydrogenation of octan·2·one and cyclohexanone in an integral flow reactor. THERMODYNAMIC STUDY OF DEHYDROGENATION OF n-PARAFFINS IN THE CARBON NUMBER RANGE (C 6-C 9 ) INTO OLEFINS
N. A. Yeliseyev, Neftekhimiya 25, No.6, 755-760, 1985. DEHYDROGENATION of C 6 -Cg n-paraffins to n-olefins at 600'-900'K was analysed thermodynami-cally while the system was diluted with hydrogen (o-S mole/mole) under pressures of 1-5) x x 10 3 Pa. increasing equilibrium yield of n-olefins was related to increasing temperature, reduction in pressure and lowering the dilution of the system with hydrogen. Other conditions being equal, as the Carbon number of the paraffin l'ncreases, equilibrium yields of n-olefins also increase. Calculated thermodynamic parameters of n-olefins in the carbon number range (C7'-C9 ) arc given.
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OF PAPERS PUBLISHED Th
NEFTEKHIMIYA Vol. 2S No.6
HYDROGENATION OF LINEAR DIMERS OF PIPERYLENE ON Pd-CATALYSTS
L. I, Gvinter, V.·M. Ignatov, V. Yu. Yegorova, A. L. Klyachko P. S. Belov and L. Kh. Freidlin, Neftekhimiya 25, No.6, 733-738, 1985. HYDROGENATION of linear piperylene dimers on Pd-catalysts takes' place in stages forming mainlY dienes (up to SO%) in the first stage of the reaction. The activity and selectivity of catalyst ~ction are determined by the type of metal and each . is independent of the type and macrostructure of the carrier. The rate of hydrogenation of piperylene dimers varies according to the solvent type. The solvent has praCtically no effcct on the course and selectivity of the reaction. On Pd-catalysts 4-methylnona-2,5,7-triene undergoes selective hydrogenation to form a diene mixture (4-methylnona-2,5-, -2,6- and -2,7-dienes) free from conjugated C=C bonds (90 to 92%). CATALYTIC HYDROGENATION OF KETONES INTO' ALCOHOLS IN A FLOW REACTOR
L.S.. Glebov, G. A. Kliger, A. A. Levitskii and S. M. Loktev, Neftekhimiya 25, No.6, 750-754, 1985. . DURING hydrogenation of ketones of different structure over a fused iron catalyst in an integral flow reactor, the indepe!ldence of the reaction rate on the degree of conversion of the initial ketone was shown to depend on temperature variation in the reaction volume. Temperatures were calculated for hydrogenation of octan·2·one and cyclohexanone in an integral flow reactor. THERMODYNAMIC STUDY OF DEHYDROGENATION OF n-PARAFFINS IN THE CARBON NUMBER RANGE (C 6-C 9 ) INTO OLEFINS
N. A. Yeliseyev, Neftekhimiya 25, No.6, 755-760, 1985. DEHYDROGENATION of C 6 -Cg n-paraffins to n-olefins at 600'-900'K was analysed thermodynami-cally while the system was diluted with hydrogen (o-S mole/mole) under pressures of 1-5) x x 10 3 Pa. increasing equilibrium yield of n-olefins was related to increasing temperature, reduction in pressure and lowering the dilution of the system with hydrogen. Other conditions being equal, as the Carbon number of the paraffin l'ncreases, equilibrium yields of n-olefins also increase. Calculated thermodynamic parameters of n-olefins in the carbon number range (C7'-C9 ) arc given.
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