Here,
we report a novel 3D printed layered ordered mesoporous template
that can encapsulate active Co-MOFs species in a confined way to achieve
the goal of monolithic catalyst. The monolithic OM-Co3O4@SiO2–S catalyst can maintain a macroscopic
porous layered structure and a microscopic ordered mesoporous structure.
This monolithic OM-Co3O4@SiO2–S
catalyst has excellent catalytic performance (T
90 = 236 °C), water resistance, and thermal stability
in the catalytic combustion of toluene. The catalytic performance
of the monolithic OM-Co3O4@SiO2–S
catalyst is much better than that of many monolithic catalysts reported
in the former. Among them, the introduction of binder aluminum phosphate
(AP) can effectively enhance the rheological properties of the printing
ink, achieve the purpose of ink writing monolithic layered porous
material, enrich the acidic point of the monolithic catalyst, and
increase the number of reactive oxygen species. This work reveals
a novel monolithic catalyst forming strategy that can combine the
advantages of ordered mesoporous materials with active species to
form macro-layered porous materials and provide ideas and an experimental
basis for the elimination of VOCs in industrial applications.
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