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Enhanced Chemoselectivity in Pt-Fe@mSiO(2) Bimetallic Nanoparticles in the Absence of Surface Modifying Ligands

TitleEnhanced Chemoselectivity in Pt-Fe@mSiO(2) Bimetallic Nanoparticles in the Absence of Surface Modifying Ligands
Publication TypeJournal Article
Year of Publication2018
AuthorsMaligal-Ganesh, RV, Brashler, K, Luan, XC, Goh, TW, Gustafson, J, Wu, JS, Huang, WK
JournalTopics in Catalysis
Volume61
Pagination940-948
Date Published06
Type of ArticleArticle
ISBN Number1022-5528
Accession NumberWOS:000435827900020
Keywordsalloy, Capping free, catalysts, chemistry, cinnamaldehyde hydrogenation, Furfural hydrogenation, nanocatalysts, nanocrystals, nanoparticles, PtFe alloy, PtFe intermetallic nanoparticles, selective hydrogenation, strategy, zeolitized-pumice
Abstract

because the complete removal of the capping agents can often cause their aggregation or structural/compositional changes. Herein we report the synthesis of Pt5Fex (x = 1, 2 and 4) bimetallic NPs capped by an inorganic mesoporous silica (mSiO(2)) shell, which could prevent NP aggregation during high-temperature treatment to remove capping agents. Using these Pt5Fex@mSiO(2) NPs with a clean surface, we could demonstrate the role played independently by the bimetallic composition in the selective hydrogenation of cinnamaldehyde and furfural. Understanding the functions of the secondary metal and the surface modifying ligands on the selectivity enhancement of bimetallic NPs is necessary for the design of high-performance chemoselective catalysts.

DOI10.1007/s11244-018-0933-2
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