H adsorption at Ag/Si interfaces in epitaxially grown Ag(111) films on Si(111)7×7 substrates

Aoki, Yuki; Shi, Lijian; Sugimoto, T.; Hirayama, Hiroyuki

doi:10.1016/j.susc.2009.12.005

Surface Science

2010

DOI: 10.1016/j.susc.2009.12.005

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H adsorption at Ag/Si interfaces in epitaxially grown Ag(111) films on Si(111)7×7 substrates

Yuki Aoki

Lijian Shi

T. Sugimoto

et al.

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Cited by 2 publications

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“…Our design concept of Pd@Ag represents the building of a compatible relationship between Pd, with its high activity, and Ag, with its high alkene-selectivity, by construction of a core–shell structure. Pd NPs in the core store hydrogen to form palladium-hydride (PdH) through the H 2 -permeable Ag shell nanolayer . The inner PdH serves hydrogen to the outer Ag shell, providing the Pb-free and selective semihydrogenation of alkynes occurring on the Ag surface.…”

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confidence: 97%

Design of Core-Pd/Shell-Ag Nanocomposite Catalyst for Selective Semihydrogenation of Alkynes

Mitsudome¹,

Urayama²,

Yamazaki

et al. 2015

ACS Catal.

146

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We designed core-Pd/shell-Ag nanocomposite catalyst (Pd@Ag) for highly selective semihydrogenation of alkynes. The construction of the core−shell nanocomposite enables a significant improvement in the low activity of Ag NPs for the selective semihydrogenation of alkynes because hydrogen is supplied from the core-Pd NPs to the shell-Ag NPs in a synergistic manner. Simultaneously, coating the core-Pd NPs with shell-Ag NPs results in efficient suppression of overhydrogenation of alkenes by the Pd NPs. This complementary action of core-Pd and shell-Ag provides high chemoselectivity toward a wide range of alkenes with high Z-selectivity under mild reaction conditions (room temperature and 1 atm H 2 ). Moreover, Pd@Ag can be easily separated from the reaction mixture and is reusable without loss of catalytic activity or selectivity.

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mentioning

confidence: 97%

Design of Core-Pd/Shell-Ag Nanocomposite Catalyst for Selective Semihydrogenation of Alkynes

Mitsudome¹,

Urayama²,

Yamazaki

et al. 2015

ACS Catal.

146

View full text Add to dashboard Cite

show abstract

Hydrogen detection near surfaces and shallow interfaces with resonant nuclear reaction analysis

Wilde

Fukutani

2014

Surface Science Reports

138

115

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H adsorption at Ag/Si interfaces in epitaxially grown Ag(111) films on Si(111)7×7 substrates

Cited by 2 publications

References 21 publications

Design of Core-Pd/Shell-Ag Nanocomposite Catalyst for Selective Semihydrogenation of Alkynes

Design of Core-Pd/Shell-Ag Nanocomposite Catalyst for Selective Semihydrogenation of Alkynes

Hydrogen detection near surfaces and shallow interfaces with resonant nuclear reaction analysis

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