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A. Drelinkiewicz et al. / Applied Catalysis A: General 455 (2013) 92–106
the migration of reagents from the catalyst. Nanorods of polymer
forming branched dendritic structures were formed in carbon and
silica carriers. In the presence of these catalysts the accumulation
of partial glycerides/glycerol was observed. This was attributed to
the aggregated morphology of polymer coating resulting in a locally
high density of acid sites. Microporous structure of catalysts as in
carbon-supported sample facilitated also this products accumula-
tion effect. Too high density of the active sites, especially inside
the pore structure could facilitate interaction with polyol, such as
glycerol, which might lead to the accumulation of reagents with
consequent blockage of active sites.
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