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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
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A highly efficient nano-sized Cu2O/SiO2 egg-shell catalyst for C-C coupling reactions
Soohee Kim1, Shin Wook Kang2, Aram Kim1
1Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea chemistry@pusan.ac.kr.
RSC Advances
|May 11, 2022
Summary
Copper oxide (Cu2O) nanoparticles supported on mesoporous silica exhibit high catalytic activity for Sonogashira reactions. This egg-shell catalyst design enhances efficiency in synthesizing ynones.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Mesoporous silica (SiO2) supports are crucial for catalyst design.
- Egg-shell catalyst structures offer advantages in reactant diffusion and active site accessibility.
- Copper oxide (Cu2O) nanoparticles are effective catalytic components.
Purpose of the Study:
- To synthesize and characterize mesoporous SiO2-supported Cu2O nanoparticles with an egg-shell structure.
- To evaluate the catalytic performance of the synthesized nanocatalyst in Sonogashira reactions.
- To understand the structure-activity relationship for enhanced catalytic efficiency.
Main Methods:
- Impregnation method for preparing Cu2O/SiO2 egg-shell nanocatalysts.
- Characterization of nanoparticle size, dispersion, and pore structure.
- Application of the catalyst in solvent-free Sonogashira reactions for ynone synthesis.
Main Results:
- Successfully prepared Cu2O/SiO2 egg-shell nanocatalysts with high surface area and narrow pore size distribution.
- Achieved highly dispersed Cu2O nanoparticles (approx. 2.0 nm) on the mesoporous silica support.
- Demonstrated very high catalytic activity in solvent-free Sonogashira reactions, synthesizing ynones from acyl chlorides and terminal alkynes.
Conclusions:
- The egg-shell design with highly dispersed Cu2O nanoparticles on mesoporous SiO2 is highly effective for Sonogashira coupling.
- Synergistic effects between the mesoporous structure and the precisely located active sites contribute to excellent catalytic performance.
- This catalyst offers a promising approach for efficient and solvent-free synthesis of ynones.
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