Transformations of a Metal Complex Precursor of the Active Component in the Preparation of Pt/Al2O3 Catalysts
O. B. Belskaya
Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences Omsk State Technical University
obelska@ihcp.oscsbras.ru
Keywords: aluminium oxide-platinum catalysts, platinum chloride complexes, hydrolysis, adsorption
Pages: 33-43
Abstract
By the example of the formation of Pt/Al2O3 catalytic system an influence was demonstrated exerted by the sequence of metal complex precursor transformations at the initial stages of catalyst preparation upon the state of platinum on the active surface of the finished catalyst. Views are expounded concerning the nature of the chemical bond between the metal complex and the carrier. Approaches are considered with respect to the quantitative differentiation of ion-exchange (outer-sphere), and coordinationally bonded (inner-sphere) adsorbed metal complex species, with respect to determining their chemical composition, as well as with respect to obtaining catalysts from a deposited precursor homogeneous in the type of interaction with the carrier.
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