Dual metal nanoparticles within multicompartmentalized mesoporous organosilicas for efficient sequential hydrogenation

Houbing Zou, Jinyu Dai, Jinquan Suo, Rammile Ettelaie, Yuan Li, Nan Xue, Runwei Wang () and Hengquan Yang ()
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Houbing Zou: Shanxi University
Jinyu Dai: Jilin University
Jinquan Suo: Jilin University
Rammile Ettelaie: University of Leeds
Yuan Li: Shanxi University
Nan Xue: Shanxi University
Runwei Wang: Jilin University
Hengquan Yang: Shanxi University

Nature Communications, 2021, vol. 12, issue 1, 1-11

Abstract: Abstract Controlling localization of multiple metal nanoparticles on a single support is at the cutting edge of designing cascade catalysts, but is still a scientific and technological challenge because of the lack of nanostructured materials that can not only host metal nanoparticles in different sub-compartments but also enable efficient molecular transport between different metals. Herein we report a multicompartmentalized mesoporous organosilica with spatially separated sub-compartments that are connected by short nanochannels. Such a unique structure allows co-localization of Ru and Pd nanoparticles in a nanoscale proximal fashion. The so designed cascade catalyst exhibits an order of magnitude activity enhancement in the sequential hydrogenation of nitroarenes to cyclohexylamines compared with its mono/bi-metallic counterparts. Crucially, an interesting phenomenon of neighboring metal-assisted hydrogenation via hydrogen spillover is observed, contributing to the significant enhancement in catalytic efficiency. The multicompartmentalized architectures along with the revealed mechanism of accelerated hydrogenation provide vast opportunity for designing efficient cascade catalysts.

Date: 2021
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DOI: 10.1038/s41467-021-25226-x

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