Herein, an efficient and practical approach for dipolar
modification
of commercially available solid catalysts is reported. The solid catalysts
HMS (hexagonal mesoporous silica)-DMSO decorated with organic dipolar
layers are designed and synthesized by radiation technology under
simple and accessible conditions. The dipolar catalysts can serve
as platforms to introduce various active sites, benefiting from the
flexibility and diversity of the dipolar layer, which in turn allow
them to achieve catalytic performance in relatively friendly systems.
Specifically, the upgraded dipolar catalyst HMS-DMSO-SO3H exhibits good performance in converting the oxidized lignin model
compound of α-hydroxyacetophenone to 1,3-dioxolane derivatives
and dehydrating isomaltulose to glycosyloxymethyl-furfural (GMF).
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