Atomic-Resolution HAADF-STEM Study of Ag/Al2O3 Catalysts for Borrowing-Hydrogen and Acceptorless Dehydrogenative Coupling Reactions of Alcohols

Kenta Yoshida; Kenichi Kon; Ken ichi Shimizu

doi:10.1007/s11244-016-0695-7

Atomic-Resolution HAADF-STEM Study of Ag/Al₂O₃ Catalysts for Borrowing-Hydrogen and Acceptorless Dehydrogenative Coupling Reactions of Alcohols

Kenta Yoshida, Kenichi Kon, Ken ichi Shimizu

IMR - International Research Center for Nuclear Materials Science

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We study HAADF-STEM analysis of Ag/Al₂O₃ samples (as-calcined and reduced at 25, 300, 500 and 900 °C). Ag atoms are classified into subnanoclusters (0.3–1 nm), nanoclusters (1–3 nm), nanoparticles (3–10 nm) and polycrystals (>10 nm). The size of Ag increases with the reduction temperature, which is supported by EXAFS analysis. The effect of Ag size on the activity for borrowing-hydrogen and acceptorless dehydrogenative couplings of alcohols is discussed.

Original language	English
Pages (from-to)	1740-1747
Number of pages	8
Journal	Topics in Catalysis
Volume	59
Issue number	19-20
DOIs	https://doi.org/10.1007/s11244-016-0695-7
Publication status	Published - 2016 Dec 1

Keywords

C–C bond formation
HAADF-STEM
Hydrogen transfer
Silver

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10.1007/s11244-016-0695-7

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title = "Atomic-Resolution HAADF-STEM Study of Ag/Al2O3 Catalysts for Borrowing-Hydrogen and Acceptorless Dehydrogenative Coupling Reactions of Alcohols",

abstract = "We study HAADF-STEM analysis of Ag/Al2O3 samples (as-calcined and reduced at 25, 300, 500 and 900 °C). Ag atoms are classified into subnanoclusters (0.3–1 nm), nanoclusters (1–3 nm), nanoparticles (3–10 nm) and polycrystals (>10 nm). The size of Ag increases with the reduction temperature, which is supported by EXAFS analysis. The effect of Ag size on the activity for borrowing-hydrogen and acceptorless dehydrogenative couplings of alcohols is discussed.",

keywords = "C–C bond formation, HAADF-STEM, Hydrogen transfer, Silver",

author = "Kenta Yoshida and Kenichi Kon and Shimizu, {Ken ichi}",

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year = "2016",

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doi = "10.1007/s11244-016-0695-7",

language = "English",

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T1 - Atomic-Resolution HAADF-STEM Study of Ag/Al2O3 Catalysts for Borrowing-Hydrogen and Acceptorless Dehydrogenative Coupling Reactions of Alcohols

AU - Yoshida, Kenta

AU - Kon, Kenichi

AU - Shimizu, Ken ichi

PY - 2016/12/1

Y1 - 2016/12/1

N2 - We study HAADF-STEM analysis of Ag/Al2O3 samples (as-calcined and reduced at 25, 300, 500 and 900 °C). Ag atoms are classified into subnanoclusters (0.3–1 nm), nanoclusters (1–3 nm), nanoparticles (3–10 nm) and polycrystals (>10 nm). The size of Ag increases with the reduction temperature, which is supported by EXAFS analysis. The effect of Ag size on the activity for borrowing-hydrogen and acceptorless dehydrogenative couplings of alcohols is discussed.

AB - We study HAADF-STEM analysis of Ag/Al2O3 samples (as-calcined and reduced at 25, 300, 500 and 900 °C). Ag atoms are classified into subnanoclusters (0.3–1 nm), nanoclusters (1–3 nm), nanoparticles (3–10 nm) and polycrystals (>10 nm). The size of Ag increases with the reduction temperature, which is supported by EXAFS analysis. The effect of Ag size on the activity for borrowing-hydrogen and acceptorless dehydrogenative couplings of alcohols is discussed.

KW - C–C bond formation

KW - HAADF-STEM

KW - Hydrogen transfer

KW - Silver

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VL - 59

SP - 1740

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JO - Topics in Catalysis

JF - Topics in Catalysis

IS - 19-20

ER -

Atomic-Resolution HAADF-STEM Study of Ag/Al₂O₃ Catalysts for Borrowing-Hydrogen and Acceptorless Dehydrogenative Coupling Reactions of Alcohols

Abstract

Keywords

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