A highly efficient nano-sized Cu2O/SiO2 egg-shell catalyst for C–C coupling reactions. Issue 12 (7th February 2018)

• Record Type: Journal Article
• Authors: Kim, Soohee; Kang, Shin Wook; Kim, Aram; Yusuf, Mohammad; Park, Ji Chan; Park, Kang Hyun
• Is Part Of: RSC advances. Volume 8:Issue 12(2018)
• Page Start: 6200
• Page End: 6205
• Publication Date: 2018-02-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra13490h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Mesoporous SiO2 -supported Cu2 O nanoparticles as an egg-shell type catalyst were prepared by impregnation method. Abstract : Mesoporous SiO2 -supported Cu2 O nanoparticles as an egg-shell type catalyst were prepared by impregnation method. The obtained Cu2 O/SiO2 egg-shell nanocatalyst had a large surface area and narrow pore size distribution. In addition, most of the Cu2 O nanoparticles, with sizes around 2.0 nm, were highly dispersed in the mesoporous silica. Accordingly, fast reactant diffusion to the active sites would occur, especially when the active metal sites are selectively located on the outer part of the support, i.e., the outer region of the egg shell. In solvent-free Sonogashira reactions for the synthesis of ynones from acyl chlorides and terminal alkynes, this catalyst exhibited a very high catalytic activity. The excellent catalytic performance can be attributed to the synergistic advantages of mesoporous structure and monodispersed Cu2 O nanoparticles.