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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 612 (1992), S. 155-160 
    ISSN: 0044-2313
    Keywords: Surface compounds ; tetrabenzyltitanium ; tetrabenzylzirconium ; γ-alumina ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation and Characterization of Surface Compounds in the Systems (C6H5CH2)4M/γ-Al2O5 (M = Ti, Zr)By O-bridges anchored surface-compounds are formed by protolytic splitting off of benzyl groups if tetrabenzyltitanium and -zirconium are added to γ-alumina. These compounds contain the metal in different oxidation states in dependence on the carrier/substrate ratio and the density of OH groups on the alumina surface. The different kinds of surface compounds are discussed. Furthermore, the products formed by thermal decomposition and hydrogenolysis of the surface compounds were analysed. With regard to catalytic conversion reactions of hydrocarbons systems of the type (C6H5CH2)4M/Pt/γ-Al2O3were involved in the investigations.
    Notes: Bei der Einwirkung von Tetrabenzyltitan und -zirconium auf γ-Al2O3 werden durch protolytische Abspaltung von Benzylgruppen auf dem Träger durch Sauerstoffbrücken verankerte Oberflächenverbindungen gebildet. Die Verbindungen enthalten das Metall in verschiedenen Oxidationsstufen in Abhängigkeit vom Träger/Substrat-Verhältnis und der OH-Gruppendichte des γ-Al2O3. Die unterschiedlichen Arten der Oberflächenverbindungen werden diskutiert. Weiterhin wurden die bei der thermischen Zersetzung und Hydrogenolyse gebildeten Produkte untersucht.Im Hinblick auf die katalytische Umwandlung von Kohlenwasserstoffen wurden auch Systeme des Typs (C6H5CH2)4M/Pt/γ-Al2O3(M = Ti, Zr) in die Untersuchungen einbezogen.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1992-06-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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