Immobilization of copper nanoparticles on WO 3 with enhanced catalytic activity for the synthesis of 1,2,3‐triazoles

2020 ◽  
Vol 34 (12) ◽  
Author(s):  
Mojtaba Amini ◽  
Elham Hajipour ◽  
Ali Akbari ◽  
Keun Hwa Chae
Keyword(s):  
Catalytic Activity ◽  
Copper Nanoparticles

scholarly journals N,N-Dimethylformamide-stabilized copper nanoparticles as a catalyst precursor for Sonogashira–Hagihara cross coupling

RSC Advances ◽  
2017 ◽  
Vol 7 (37) ◽  
pp. 22869-22874 ◽  
Author(s):  
Hideo Oka ◽  
Katsuya Kitai ◽  
Takeyuki Suzuki ◽  
Yasushi Obora
Keyword(s):  
Catalytic Activity ◽  
Copper Nanoparticles ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
High Catalytic Activity ◽  
Catalyst Precursor ◽  
Cross Coupling Reaction

We found that DMF-stabilized Cu NPs have high catalytic activity in the Sonogashira cross-coupling reaction at low catalyst loadings (0.2 mol%).

scholarly journals Transfer hydrogenation of benzaldehyde over embedded copper nanoparticles

2021 ◽  
Vol 24 (1) ◽  
pp. 1847-1853
Author(s):  
Thanh Thien Co
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Copper Nanoparticles ◽  
Industrial Application ◽  
Copper Catalyst ◽  
Transfer Hydrogenation ◽  
High Concentration ◽  
High Temperature And Pressure ◽  
Temperature And Pressure ◽  
Dangerous Condition

Transfer hydrogenation is one of the reactions of high industrial application and copper catalyst is widely used in variety of hydrgenated substrates. Unfortunately, these hydrogenated processes were usually performed at high temperature and pressure as well as high concentration of catalyst. In this study, we have tried to reduce the dangerous condition by using copper nanoparticles as catalyst and the catalytic activity will be evaluated via the transfer hydrogenation of benzaldehyde. Besides, copper nanoparticles were successful prepared by the reduction between CuSO4.5H2O and NaBH4 in the presence of PVP. All catalysts were fully characterized.

scholarly journals Synthesis and Catalytic Applications of Ultrasmall Copper Nanoparticles Using Aloe Vera Plant Extract

2020 ◽  
Author(s):  
Rajagopal Ramkumar ◽  
Shradha Sapru ◽  
Panthalattu Parambil Archana
Keyword(s):  
Catalytic Activity ◽  
Copper Nanoparticles ◽  
Plant Extract ◽  
Aloe Vera ◽  
Catalyst Loading ◽  
Water Medium ◽  
Reaction Conditions ◽  
Three Component Reaction ◽  
Catalytic Applications ◽  
Low Catalyst Loading

<div>An extract of <i>Aloe Vera</i> acts as a powerful reducing agent for the synthesis of ultrasmall copper nanoparticles (CuNPs) in water medium. The prepared copper nanoparticles are characterized by XRD, HRTEM and UV-Vis analysis. The diameter of the prepared nanoparticle is less than 5 nm. The catalytic activity of CuNPs has been successfully evaluated for the three-component reaction to synthesize 1,2,3-triazoles and chalcone tethered 1,2,3-triazoles with low catalyst loading and under mild reaction conditions. These triazoles are further utilized for the synthesis of dihydropyrazines.</div>

Selective C–C coupling of terminal alkynes under an air atmosphere without base over Cu–NX–C catalysts

2020 ◽  
Vol 44 (48) ◽  
pp. 20993-20998
Author(s):  
Xinxin Xiao ◽  
Yin Xu ◽  
Sangepu Bhavanarushi ◽  
Bin Liu ◽  
Xiaomeng Lv
Keyword(s):  
Catalytic Activity ◽  
Copper Nanoparticles ◽  
Oxidative Coupling ◽  
Terminal Alkynes ◽  
Air Atmosphere ◽  
Highly Dispersed ◽  
Nitrogenated Carbon

Highly dispersed copper nanoparticles supported on mesoporous nitrogenated carbon were synthesized and exhibited superior catalytic activity towards aerobic oxidative coupling of terminal alkynes.

scholarly journals One pot synthesis of copper nanoparticles at room temperature and its catalytic activity

2016 ◽  
Vol 9 ◽  
pp. S1807-S1812 ◽  
Author(s):  
Nikhil V. Suramwar ◽  
Sanjay R. Thakare ◽  
Niraj T. Khaty
Keyword(s):  
Catalytic Activity ◽  
Copper Nanoparticles ◽  
Room Temperature ◽  
One Pot ◽  
One Pot Synthesis

Immobilization of copper nanoparticles on perlite: Green synthesis, characterization and catalytic activity on aqueous reduction of 4-nitrophenol

2015 ◽  
Vol 400 ◽  
pp. 22-30 ◽  
Author(s):  
Mahmoud Nasrollahzadeh ◽  
S. Mohammad Sajadi ◽  
Akbar Rostami-Vartooni ◽  
Mojtaba Bagherzadeh ◽  
Reza Safari
Keyword(s):  
Catalytic Activity ◽  
Green Synthesis ◽  
Copper Nanoparticles

Synthesis and catalytic activity of carbon supported copper nanoparticles for the synthesis of aryl nitriles and 1,2,3-triazoles

RSC Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2785-2793 ◽  
Author(s):  
Mahmoud Nasrollahzadeh ◽  
Babak Jaleh ◽  
Parisa Fakhri ◽  
Ali Zahraei ◽  
Esmaeil Ghadery
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Copper Nanoparticles ◽  
Triazole Derivatives ◽  
Aryl Nitriles ◽  
Ligand Free

Various substituted aryl nitrile and 1,2,3-triazole derivatives were prepared by using carbon supported copper nanoparticles (C/Cu NPs) as a heterogeneous catalyst under ligand-free conditions, which provided good to excellent yields.

Factors influencing the catalytic activity of SBA-15-supported copper nanoparticles in CO oxidation

2006 ◽  
Vol 297 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Cai-Hua Tu ◽  
Ai-Qin Wang ◽  
Ming-Yuan Zheng ◽  
Xiao-Dong Wang ◽  
Tao Zhang
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Copper Nanoparticles ◽  
Factors Influencing
Sign in / Sign up

Export Citation Format

Share Document