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  • 11
    Electronic Resource
    Electronic Resource
    Study of the radical forms of oxygen on CoO-MgO solid solutions by ESR spectroscopy (1972)
    Springer
    Russian chemical bulletin 21 (1972), S. 1609-1610 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. Strong chemisorption of oxygen in the CoO-MgO system is associated with electron transfer from Co2+ to the O2 molecule with the formation of O 2 − stabilized on Mg 2 2+ . 2. The O 2 − form stabilized on Co3+ is weakly bonded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00850536
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  • 12
    Electronic Resource
    Electronic Resource
    Investigation of the peculiarities of the oxidation of cyclohexane on NaY and NaCuY zeolites by the method of IR spectroscopy (1975)
    Springer
    Russian chemical bulletin 24 (1975), S. 688-691 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. Spectral investigations using a closed method showed the existence of a strong adsorption of cyclohexane (CH) on NaY zeolite in the precatalytic temperature region. 2. In the case of passage of a mixture of C6H12+O2, NaY zeolite is characterized by the appearance of the absorption bands 1720, 1780, and 1820 cm−1, corresponding to carbonyl-containing and peroxide compounds, at 60–80°. In the case of partial replacement of the Na+ ion by Cu2+, the formation of these compounds is not recorded up to 180°. 3. The process of oxidation of CH on zeolites is of a heterogeneous — homogeneous character. The transition of the reaction into the volume occurs in the case of sodium zeolite at∼120°, and in the case of copper — sodium zeolite at 220°. 4. A fluctuating system of the reaction of oxidation of CH on NaY zeolite is of an autocatalytic character and is associated with the periodic accumulation of peroxide-type compounds on the surface of the zeolites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00920674
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  • 13
    Electronic Resource
    Electronic Resource
    Observance of luminescence in the adsorption of vapors and gases on NiO (1966)
    Springer
    Russian chemical bulletin 15 (1966), S. 2183-2183 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00867735
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  • 14
    Electronic Resource
    Electronic Resource
    Reaction of oxygen with surface propylene complexes on CoO-MgO solid solutions (1975)
    Springer
    Russian chemical bulletin 24 (1975), S. 1542-1544 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The reaction of oxygen with surface-propylene complexes at room temperature on a 0.1% CoO-MgO sample leads to the formation of mild oxidation products with their escape into space. 2. The effect of a discrete, “jumplike” liberation of the reaction product was detected in the case of the 0.1% CoO-MgO sample, with a simultaneous sharp increase in the oxygen absorption. This effect is practically absent for the 12% CoO-MgO. 3. A possible mechanism was proposed for the reaction of oxygen with surface-propylene complexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00946440
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  • 15
    Electronic Resource
    Electronic Resource
    Investigation of the interaction of isobutylene with an antimony-tin catalyst (1976)
    Springer
    Russian chemical bulletin 25 (1976), S. 722-725 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The surface of a SnO2-Sb2O4 catalyst is uniformly homogeneous with respect to the heats of adsorption of isobutylene. The heats vary from 50 to 20 kcal/mole as the degree of coverage is increased to 18% of a monolayer. 2. Isobutylene is adsorbed on SnO2-Sb2O4 in two forms: reversible (desorbed in the range 79–100° with Edes=21 kcal/mole) and irreversible. 3. Irreversibly chemisorbed isobutylene exists on the surface primarily in the form of theπ-methallyl complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00922367
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  • 16
    Electronic Resource
    Electronic Resource
    ESR study of the interaction of oxygen and propene with solid CoO−MgO solutions under pulse conditions (1976)
    Springer
    Reaction kinetics and catalysis letters 4 (1976), S. 275-279 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Методом ЭПР показано, что на поверхности 1% CoO−MgO после подачи на образец импульсов кислорода при комнатной температуре образуются ион-радикалы O 2 − с gI=2.0085 и gII=2.087. Нагревание образца в резонаторе спектрометра до 150 °C приводит к полному исчезновению в ЭПР-спектрах сигнала O 2 − . Получена зависимость изменения интенсивности сигнала O 2 − во времени как результат взаимодействия адсовбированных пропилена и кислорода на поверхности образца.
    Notes: Abstract An ESR study has shown that under the action of oxygen pulses, radical ions O 2 − with gI=2.0085 and gII=2.087 are generated at room temperature on the surface of 1% CoO−MgO. Heating of the sample to 150 °C in the spectrometer results in complete disappearance of the O 2 − signal from the ESR spectra. The variation of the O 2 − signal intensity with time due to the interaction between propene and oxygen adsorbed on the sample surface, has been measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02062009
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  • 17
    Electronic Resource
    Electronic Resource
    Quantum-chemical investigation of the interaction of propene and oxygen with solid CoO−MgO surfaces (1976)
    Springer
    Reaction kinetics and catalysis letters 4 (1976), S. 269-274 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract С помощью квантово-химического метода изучались взаимодействие пропилена и кислорсда с ионами Co2+, Co3+ и Mg2+ на поверхности решетки MgO, а также адсорбция заряженной формы O 2 − и п-аллиьного радикала. Показано, что адсорбция пропилена должна происходить более прочно на ионах Co3+, чем на ионах Co2+ и Mg2+. В противо-положность пропилену кислород адсорбируется более прогно на ионах Co2+ с последующим электронным переносом на молекулу кислорода. Полученные результаты сопоставлены с экспериментальными данными.
    Notes: Abstract The interaction of propene and oxygen with Co2+, Co3+ and Mg2+ ions on the MgO lattice surface, as well as the adsorption of charged forms of O 2 − and π-allyl radical have been studied by a quantum-chemical method. Propene adsorption has been found to be stronger on Co3+ than on Co2+ and Mg2+ ions. Unlike propene, oxygen is adsorbed more strongly on Co2+ ions with subsequent electron transfer to an oxygen molecule. The data obtained are compared with experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02062008
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  • 18
    Electronic Resource
    Electronic Resource
    Diffuse reflectance spectroscopic studies of supported molybdenum oxide catalysts for propene metathesis (1978)
    Springer
    Reaction kinetics and catalysis letters 8 (1978), S. 347-352 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Измерены спектры диффузного отражения окиси молибдена, нанесенной на γ-Al2O3 и SiO2 в количестве 10% вес. для различных стадий обработки этих систем. γ-Al2O3 была предварительно обработана 0,05% и 1,0% KOH. Сравнение полученных в настоящей работе спектральных данных и каталитических свойств этих систем позволяет сделать заключение об оптимальном окислительном состоянии ионов молибдена в поверхностных кластерах (∼ Mo5+), необходимом для получения нанесённых окисномолибденовых катализаторов диспропорционирования пропилена с высокой каталитической активностью и селективностью.
    Notes: Abstract Diffuse reflectance spectra of 10 wt.% MoO3 supported on γ-Al2O3 and SiO2 have been measured after various steps of treatment. γ-Al2O3 was pretreated by 0.05 and 1.0 wt.% KOH. The comparison of spectral data and catalytic properties allows to predict the optimal oxidation state of molybdenum ions in surface clusters (approximately Mo5+), necessary to obtain supported MoO3 catalysts for propene metathesis with high activity and selectivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068177
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  • 19
    Electronic Resource
    Electronic Resource
    Investigation of supported WO3 catalysts for propene metathesis by diffuse reflectance spectroscopy (1978)
    Springer
    Reaction kinetics and catalysis letters 8 (1978), S. 257-261 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Измерены спектры диффузного отражения катализаторов диспропорционирования пропилена WO3/SiO2 и WO3/γ-Al2O3 для различных стадий обработки зтих образцов, в частности, для случая обработки WO3/SiO2 парами HCl. Покзано, что в случае WO3/γ-Al2O3 температуры начала реакции и восстановления окиси вольфрама совпадают.
    Notes: Abstract Diffuse reflectance spectra have been recorded for WO3/SiO2 and WO3/γ-Al2O3 catalysts after various steps of treatment of these samples, in particular, after treatment of WO3/SiO2 by HCl. It is shown that for WO3/γ-Al2O3 the temperatures of the onset of reaction and WO3 reduction coincide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02061314
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  • 20
    Electronic Resource
    Electronic Resource
    Study of selective Fischer-Tropsch catalysts synthesized by the destruction of bimetallic carbonyl complexes on activated γ-Al2O3 support (1990)
    Springer
    Hyperfine interactions 57 (1990), S. 1987-1990 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The bimetallic catalysts obtained by the deposition of a Fe−Co binuclear cluster on the dehydroxylated γ-Al2O3 are studied and compared to some other relative systems. These bimetallic catalysts are found to be active and selective in olefin synthesis. This is connected with the formation of Fe−Co contact which is detectable by Mössbauer spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02405753
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