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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 2 (1975), S. 297-303 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Изотопный обмен D2 с OH группами HY цеолитов был исследован в твердой и газовой фазах с помощю ИК и масс-снектроскопии Скорость обменов O2−OH и O2−H2 порышается с дегидроксилированием образцов. Активные центры возникают, вероятно, за счет отрыва решеточного кислорода, и катализируют диссоциацию O2. Дегидроксилирование сопровоздается возникновением групп OH, поглощающих при 3740 см−1, обмен которюх медленнее, чем для остальных OH и оказывает влияние на кинетику обмена в газовой фазе.
    Notes: Abstract The exchange reaction of D2 with OH groups of HY zeolites was followed both in the solid and gas phase by IR and MS. The rates of D2−OH and D2−H2 exchange increase considerably with dehydroxylation of the sample. The active centers are probably vacancies formed by removal of oxygen from the lattice, they catalyze the dissociation of D2. Dehydroxylation of the sample is accompanied by the formation of 3 740 cm−1 hydroxyls, whose exchange with D2 is slower than that with other OH groups and which affect the kinetics in the gas phase.
    Type of Medium: Electronic Resource
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