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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Inorganica Chimica Acta 73 (1983), S. 215-220 
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Inorganica Chimica Acta 81 (1984), S. L23-L24 
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Inorganica Chimica Acta 76 (1983), S. L193-L194 
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 25 (1984), S. 79-82 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Изомеризация-диспропорционирование м-ксилола было исс ледовано на серии деалюминированных морденитов, характеризуемых отноше нием Si/Al, изменяющимся от 5 до 15. Каталитическая активность увелич ивается с увеличением отношения Si/Al, а соответственно зтому и продукты диспропорционирования. Зто поведение обьясняется на основе увеличив ающейся кислотной силы, приводящей к высокой активности и селек тивности к диспропорционированию, через общий механизм, который включает в себя как параллельные, так и последовательные ступени.
    Notes: Abstract The isomerization-disproportionation of m-xylene has been investigated over a series of dealuminated mordenites characterized by Si/Al ratios varying from 5 to 15. Catalytic activity increases with the Si/Al ratio and correspondingly also the products of disproportionation. This behavior is interpreted in terms of increasing acid strength leading to a higher activity and selectivity to disproportionation through a common mechanism which involves both a parallel and a consecutive route.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 21 (1982), S. 467-472 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Бэкмановская перегруппировка циклогексанон оксима до капролактама была исследована в паровой фазе на фторированных алюмокатализаторах, содержащих от 1 до 61 вес. % фтора. Добавление фтора повышает каталитическую активность Al2O3. Селективность к капролактаму имеет максимум в области 11–31%. Вероятно, благодаря оптимуму в распределении центров кислот Льюиса и Брёнстэда на поверхности катализатора имеем высокую селективность, наблюдаемую при промежуточных значениях содержания фтора. Добавление водьи к газовой фазе вызывает уменышение селективности.
    Notes: Abstract The Beckmann rearrangement of cyclohexanone oxime to caprolactam has been studied in the vapor phase over fluorinated alumina catalysts containing 1 to 61 wt. % F. Addition of fluorine enchances the catalytic activity of Al2O3. Selectivity to caprolactam shows a maximum in the fluorine range 11–31%. It is likely that an optimum distribution of Lewis and Brönsted acidic sites on the catalyst surface is responsible for the high selectivity observed at intermediate fluorine contents. Addition of water to the gas phase causes a decrease in selectivity.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 26 (1984), S. 111-116 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Частичное гидрирование бензола до циклогексена было исследовано на Pt/найлон 66, Pt/MgO и PtTiO2. Наблюдалось влияние носителя на селективность к образованию циклогексена, причем наивысшей селективностью обладала Pt/найлон, с последующими Pt/MgO и Pt/T,O2. Взаимодействие платины с более основными носителями (найлон, MgO) и предварительная обработка в окисляющих условиях приводят к высокой селективности к циклогексену.
    Notes: Abstract Partial hydrogenation of benzene to cyclohexene has been studied on Pt/Nylon 66, Pt/MgO and Pt/TiO2. An effect of the support on the selectivity to cyclohexene was observed, Pt/Nylon showing the highest selectivity, followed by Pt/MgO and Pt/TiO2. An interaction of platinum with the more basic supports (Nylon, MgO) and a pretreatment under oxidizing conditions, results in a higher selectivity to cyclohexene.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 189-193 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die binären und ternären Gleichgewichte im System MoO3 - TeO2 - Al2O3 wurden rötgenographisch untersucht. Bei 750°C in Luft wurden in diesem System die im Abstract angegebenen koexistierenden Bereiche gefunden. Eine Bildung ternärer Verbindungen konnten im untersuchten Temperaturbereich (450 - 750°C) nicht beobachtet werden.
    Notes: The binary and ternary equilibrium reactions of Al2O3 with TeO2 and MoO3 were studied by X-ray diffraction methods and the following compatibility ranges were determined in the TeO2 - MoO3 - Al2O3 system at 750°C in air: TeO2, Te2MoO7, Al2TeO6; Te2MoO7, MoO3, Al2TeO6; MoO3, Al2(MoO4)3, Al2TeO6; Al2(MoO4)3, Al2O3, Al2TeO6. Ternary compound formation was not observed in the temperature range investigated (450 - 750°C).Phasengleichgewichte im System MoO3 - TeO2 - Al2O3.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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