Dehydrogenation Of Tetralin Research Articles

Determination of the bond energies of organogens to the surface of europium oxide

1. The reactions of dehydrogenation and dehydration of i-C3H7OH and the dehydrogenation of tetralin on two samples of Eu2O3, prepared by different methods, were studied. 2. The influence of carbonization on the course of the decomposition of i-C3H7OH and on the kinetic parameters found was investigated. 3. The energies of the bonds of the organogens to the surface of Eu2O3 were calculated.

Investigation of the dehydrogenating activity of polyarylenequinones

1. The dehydrogenation of tetralin by polysulfophenylenequinone was investigated by a spectrophotometric method. 2. The maximum yield of naphthalene (72.6%) was obtained in an inert atmosphere at 138°. 3. The dehydrogenation reaction proceeds according to first order with respect to tetralin and is autocatalytic in character; the activation energy of the dehydrogenation process is equal to 11.4 kcal/mole 4. After the first dehydrogenation, the electron-exchange capacity of polysulfophenylenequinone decreases somewhat and remains constant during subsequent processes of dehydrogenation (after regeneration).

酸化鉄によるテトラリンの脱水素

酸化鉄によるテトラリンの脱水素

Catalytic properties of ytterbium oxide with respect to dehydrogenation and dehydration reactions of alcohol and dehydrogenation of tetralin

1. The kinetics of the dehydrogenation and dehydration of ethanol, n-propanol, isopropanol, n-butanol, and isobutanol, the dehydrogenation of tetralin, and the dehydration of tert-butanol on ytterbium oxide was studied. The activation energies of these reactions were determined. 2. A difference in the catalytic properties of gadolinium, dysprosium, thulium, and ytterbium oxides with respect to the conversion of alcohols and tetralin was demonstrated. With increasing atomic number of the element forming the oxide, both the dehydrogenating and the dehydrating abilities of the oxides increase.

Kinetic parameters of dehydrogenation of tetralin and ethyl and isopropyl alcohols and of dehydration of the alcohols over erbium oxide

Kinetic parameters of dehydrogenation of tetralin and ethyl and isopropyl alcohols and of dehydration of the alcohols over erbium oxide

Catalytic properties of thulium oxide in reactions of dehydrogenation and dehydration of alcohols and dehydrogenation of tetralin

1. The activation energies of the dehydrogenation and dehydration of ethanol, n-propanol, isopropanol, n-butanol, and isobutanol, the dehydrogenation of tetralin, and the dehydration of tert-butanol on Tm2O3 were determined. 2. Alkyl substituents on the α-carbon atom influence the bond energies of C, H, and O with Tm2O3.

Catalytic properties of gadolinium oxide in reactions of dehydrogenation and dehydration of alcohols and dehydrogenation of tetralin

Catalytic properties of gadolinium oxide in reactions of dehydrogenation and dehydration of alcohols and dehydrogenation of tetralin

Kinetics of the dehydrogenati on and dehydration of isopropanol and the dehydrogenation of tetralin on samarium oxide

1. The true activation energies of the dehydrogenation and dehydration of isopropanol and the dehydrogenation of tetralin and the bond energies of C, H, and O with Sm2O3 were determined. 2. The relative adsorption coefficients of the reaction products of isoprepanol and tetralin depend on the temperature. 3. The heats of adsorption of the reaction products of isopropanol (hydrogen, acetone, water, and propylene) are greater than the heats of adsorption of the alcohol. 4. The heat of adsorption of tetralin is greater than the heats of adsorption of its reaction products, hydrogen and naphthalene.

Catalytic properties of ferrites in dehydrogenation and dehydration reactions. Report 1. Transformation of isopropanol and tetralin

1. The activation energies of the dehydrogenation and dehydration of isopropanol on ferrite are close, although the dehydrogenation reaction considerably predominates. 2. The low activation energy of the dehydrogenation of tetralin is explained by the fact that cubic structures of nickel ferrite and nickel oxide, promoting the dehydrogenation of tetralin, are formed when the catalyst is calcined. Cracking of tetralin occurs together with the dehydrogenation.

Catalytic transformations of isopropanol and tetralin over gallium oxide

1. The decomposition of isopropanol and tetralin on gallium oxide was studied for the first time. 2. Simultaneous dehydrogenation and dehydration of i-C3H7OH with activation energies of 8.3 and 11.5 kcal/ mole, respectively, take place on Ga2C3. 3. Pure dehydrogenation of tetralin, activation energy 32 kcal/mole, takes place on Ga2O3. 4. The bond energies of the H, C, and O atoms to the active centers of gallium oxide were calculated by a kinetic method.

Catalytic properties of samarium oxide with respect to the dehydrogenation and dehydration of alcohols and the dehydrogenation of tetralin

1. Primary alcohols are dehydrogenated on samarium oxide to a greater degree than they are dehydrated, and the dehydrogenating ability increases as the molecular weight of the primary alcohols is increased. Secondary isopropanol is dehydrated to a greater degree. 2. On samarium oxide, alkyl substituants on the α- and β-carbon atoms, when two hydrogen atoms are replaced by methyl, exert a great influence on the value of the activation energy of dehydrogenation. 3. The bond energies of C, H, and O with Sm2O3 were determined by a kinetic method.

Kinetics of the dehydrogenation and dehydration of isopropanol and dehydrogenation of tetralin on neodymium oxide

1. The bond energies QC-cat, calculated according to the true and apparent activation energies, are close. The same also pertains to QH-cat. For QO-cat, the difference is 4.8 kcal/M. 2. The relative adsorption coefficients of the reaction products of the dehydrogenation and dehydration of isopropanol (except for propylene) and of the dehydrogenation of tetralin decrease with increasing temperature. 3. The heats of adsorption of the reaction products are greater than the heats of adsorption of isopropanol during dehydrogenation and dehydration and of tetralin during its dehydrogenation (the heat of adsorption of propylene is less than the heat of adsorption of the alcohol).

The catalytic properties of neodymium oxide under dehydrogenation and dehydration of alcohols, and the dehydrogenation of tetralin

1. Alcohols are dehydrogenated and dehydrated on neodymium oxide. For primary alcohols, the dehydrogenating power increases with increase in molecular weight of the alcohol. 1. In alcohols, alkyl substituents at the α-carbon atom lower the activation energy for dehydrogenation. The values of the bond energies QC-c, QH-c and QO-c depend on the structure of the reacting alcohols.

Determination of the energies of bonds of carbon, hydrogen, and oxygen atoms of organic molecules with copper by a kinetic method

From the activation energies of the dehydrogenation of tetralin and isopropanol and the dehydration of tertiary butanol we determined the energies of the bonds of hydrogen, carbon, and oxygen with copper and showed that these values change in the order QH-Cu > QO-Cu > QC-Cu.

Catalytic properties of ?-U3O8 in dehydrogenation and dehydration; the energies of the bonds of carbon, hydrogen, and oxygen with the catalyst

1. α-U3O8 is a catalyst with diverse effects and promotes the dehydrogenation and dehydration of isopropanol and the dehydrogenation of tetralin. 2. The catalytic properties of α-U3O8 in dehydrogenation and dehydration are similar to those of ThO2. 3. The energies of the bonds of C, H, and O with α-U3O8 change in the order QO-cat>QH-cat>Qc-cat.

The kinetics of the dehydrogenation and dehydration of isopropyl alcohol and the dehydrogenation of tetralin on thulium oxide

1. Thulium oxide dehydrates and dehydrogenates isopropyl alcohol and dehydrogenates tetralin to naphthalene. The kinetics of these reactions have been studied. 2. Relative adsorption coefficients for the reaction products have been determined and thermodynamic functions for adsorptional displacement calculated. 3. Energies of bonding of C, H and O with the surface of thulium oxide have been determined.

Kinetics of dehydrogenation and dehydration of isopropyl alcohol and dehydrogenation of tetralin on ytterbium oxide

Kinetics of dehydrogenation and dehydration of isopropyl alcohol and dehydrogenation of tetralin on ytterbium oxide

Kinetics of dehydrogenation and dehydration of isopropyl alcohol and dehydrogenation of tetralin on gadolinium oxide

Kinetics of dehydrogenation and dehydration of isopropyl alcohol and dehydrogenation of tetralin on gadolinium oxide

Kinetics of dehydrogenation and dehydration of isopropyl alcohol and dehydrogenation of tetralin on dysprosium oxide

1. The influence of the heat effect of the reaction is shown from kinetic measurements, and determinations are made of the apparent activation energies of the dehydrogenation and dehydration of isopropyl alcohol and the dehydrogenation of tetralin on Yb2O3 under isothermal conditions. 2. Determinations are made of the relative adsorptive coefficients of the products of the above reactions under isothermal conditions, the values of these coefficients depending on the temperature. Calculations are made of the thermodynamic functions for the adsorptive replacement of isopropyl alcohol and tetralin by the reaction products. 3. The true activation energies are found for dehydrogenation and dehydration of isopropyl alcohol\((\varepsilon _{H_2 true} = 22.9 kcal/M,{\text{ }}\varepsilon _{H_2 O true} = 30.6 kcal/M)\) and dehydrogenation of tetralin (\(\varepsilon ' _{H_2 } = 36.6 kcal/M\)) on ytterbium oxide under isothermal conditions. 4. The kinetic method has been used to find the energies of the bonds formed between the C, H, and O atoms of the reacting molecules and the catalytically active part of the catalyst surface.

Kinetic determination of the energy of the bonds formed between the reactive atoms of organic molecules and the surface of a MoO2 catalyst

1. Kinetic studies have been made of the dehydrogenation of isopropyl alcohol, the dehydration of trimethylcarbinol, and the dehydrogenation of tetralin on a MoO2 catalyst. 2. The kinetic method has been used to find the energies of the bonds formed by carbon, hydrogen and oxygen with the MoO2 surface.