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

作者：Yoshida Kenta; Kon Kenichi; Shimizu Ken ichi^*

来源：Topics in Catalysis, 2016, 59(19-20): 1740-1747.

DOI：10.1007/s11244-016-0695-7

• HAADF-STEM
• C-C bond formation
• Hydrogen transfer
• Silver

We study HAADF-STEM analysis of Ag/Al2O3 samples (as-calcined and reduced at 25, 300, 500 and 900 degrees 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.

• 出版日期2016-12