Abstract
This review summarizes literature findings on determination of Pd-particle
size and specific surface area of Supported Pd-catalysts. Chemisorption
of CO is the most frequent method used for the purpose. The surface
density of Pd atoms and chemisorbed CO molecules are the main parameters
essential for the exact determination of the area. The generally
accepted value - 0.84.10(15) atoms cm(-2) - is the average value
for Pd atoms in crystallographic planes (111), (100) and (101). The
Surface density of CO Molecules is a crucial parameter for the
reaction of CO with Pd, forming several bond types, which leads
to different Pd/CO stoichiometries. The paper discusses various
factors influencing the stoichiometry, such as the Support type,
use of promoters, Pd concentration and its particle size. The Pd-particle
size cannot be reliably determined Without using other techniques,
such as TEM, FT-IR or temperature programmed desorption of CO.
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