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Highly efficient and robust Pt ensembles on mesoporous alumina for reversible H2 charge and release of commercial benzyltoluene molecules

Authors
Oh, J.Jo, Y.Kim, T.W.Bathula, H.B.Yang, S.Baik, J.H.Suh, Y.-W.
Issue Date
May-2022
Publisher
Elsevier B.V.
Keywords
Benzyltoluenes; Dehydrogenation; Mesoporous alumina; Pt ensembles
Citation
Applied Catalysis B: Environmental, v.305, pp.1 - 10
Journal Title
Applied Catalysis B: Environmental
Volume
305
Start Page
1
End Page
10
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/151317
DOI
10.1016/j.apcatb.2022.121061
ISSN
0926-3373
Abstract
Metal single atoms often exhibit unique selectivity with maximized atom efficiency. However, they are usually generated at low metal loadings and susceptible to severe reaction conditions resulting in metal sintering, which can be overcome by a new synthesis method offering strong metal–support interaction. Here we show a great potential of one-pot solvent deficient precipitation (SDP) affording mesoporous Pt–Al2O3 (MPtA). This method is unique in creating Pt single atoms and clusters at up to 3 wt% loading because of the restricted Pt mobility by contiguous Al2O3 particles. The MPtA of 3 wt% Pt, representing ensemble species of single atoms and clusters, is more active and stable than the general impregnated catalyst comprised of Pt nanoparticles. Moreover, it successfully accomplishes reversible H2 release and charge of commercial benzyltoluene-type hydrogen carriers. The size and activity of Pt species is readily tuned in the MPtA, which will exert remarkable impacts on catalysis. © 2022 Elsevier B.V.
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공과대학 (화공생명공학부)
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