Approximation of adsorption heats of carbon monoxide on transition metals by means of an empirical model

1983 ◽  
Vol 48 (10) ◽  
pp. 2735-2739
Author(s):  
Jiří Fusek ◽  
Oldřich Štrouf ◽  
Karel Kuchynka
Keyword(s):  
Carbon Monoxide ◽  
Heat Capacity ◽  
Transition Metals ◽  
Molar Heat Capacity ◽  
Metal Adsorption ◽  
Heat Of Fusion ◽  
Class Structure ◽  
Fundamental Parameters ◽  
Adsorption Heats ◽  
Pauling Electronegativity

The class structure of transition metals chemisorbing carbon monoxide was determined by expressing the following fundamental parameters in the form of functions: The molar heat capacity, the 1st and 2nd ionization energy, the heat of fusion, Pauling electronegativity, the electric conductivity, Debye temperature, the atomic volume of metal. Adsorption heats have been predicted for twelve transition metals.

Approximation of the adsorption heats of hydrogen on transition metals by means of an empirical model

1982 ◽  
Vol 47 (9) ◽  
pp. 2363-2367 ◽  
Author(s):  
Oldřich Štrouf ◽  
Jiří Fusek ◽  
Karel Kuchynka
Keyword(s):  
Thermal Conductivity ◽  
Transition Metals ◽  
Empirical Method ◽  
Heat Of Fusion ◽  
First Order ◽  
Order Polynomial ◽  
Physical Importance ◽  
Adsorption Heats ◽  
Experimental Values ◽  
Pauling Electronegativity

The adsorption heats of hydrogen on transition metals were approximated using a first order polynomial containing variables of basic physical importance, which were determined recently by means of the empirical method of pattern recognition: the heat of fusion, heat of vaporization, Pauling electronegativity, molar thermal conductivity, first and second ionization energies, electrical conductivity, Debye temperature and atomic volume of the metal. The agreement with experimental values is closer than that obtained with the Pauling relation. Values of adsorption heats are predicted for seven transition metals.

Catalytic activity of transition metals in hydrogenolysis of ethane calculated by the simplex method

1981 ◽  
Vol 46 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Karel Kuchynka ◽  
Jiří Fusek ◽  
Oldřich Štrouf
Keyword(s):  
Heat Capacity ◽  
Catalytic Activity ◽  
Transition Metals ◽  
Simplex Method ◽  
Molar Heat Capacity ◽  
Atomic Radius ◽  
Chemical Significance ◽  
Physico Chemical ◽  
Physical Importance ◽  
First Ionization Potential

The catalytic activity of transition metals in hydrogenolysis of ethane was approximated by a polynomial of second order with variables of basic physical importance, viz., molar heat capacity, covalent atomic radius of the metal, heat of melting, and first ionization potential of the metal atom. The physico-chemical significance of the correlation of these variables with the catalytic activity of transition metals is discussed.

scholarly journals Molar Heat Capacity and Heat of Fusion of Silicon Tetraiodide

1965 ◽  
Vol 6 (4) ◽  
pp. 229-233 ◽  
Author(s):  
Toshio Kurosawa ◽  
Ryosuke Hasegawa ◽  
Tetsuo Yagihashi
Keyword(s):  
Heat Capacity ◽  
Molar Heat Capacity ◽  
Heat Of Fusion

Heat capacities and enthalpies of fusion and transformation for solvates of some salts with dimethyl sulfoxide and dimethylformamide

1988 ◽  
Vol 53 (12) ◽  
pp. 3072-3079
Author(s):  
Mojmír Skokánek ◽  
Ivo Sláma
Keyword(s):  
Heat Capacity ◽  
Phase Transformation ◽  
Phase Transformations ◽  
Dimethyl Sulfoxide ◽  
Liquidus Temperature ◽  
Molar Heat Capacity ◽  
Solid Phase ◽  
Zinc Nitrate ◽  
Heat Capacities ◽  
Liquid Phases

Molar heat capacities and molar enthalpies of fusion of the solvates Zn(NO3)2 . 2·24 DMSO, Zn(NO3)2 . 8·11 DMSO, Zn(NO3)2 . 6 DMSO, NaNO3 . 2·85 DMSO, and AgNO3 . DMF, where DMSO is dimethyl sulfoxide and DMF is dimethylformamide, have been determined over the temperature range 240 to 400 K. Endothermic peaks found for the zinc nitrate solvates below the liquidus temperature have been ascribed to solid phase transformations. The molar enthalpies of the solid phase transformations are close to 5 kJ mol-1 for all zinc nitrate solvates investigated. The dependence of the molar heat capacity on the temperature outside the phase transformation region can be described by a linear equation for both the solid and liquid phases.

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