Highly active and reusable silica-aerogel-supported platinum–cobalt bimetallic catalysts for the dehydrogenation of ammonia borane

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112109-112116 ◽  
Author(s):  
Pin-Ju Yu ◽  
Chia-Ching Hsieh ◽  
Po-Yu Chen ◽  
Biing-Jyh Weng ◽  
Yui Whei Chen-Yang
Keyword(s):  
Mesoporous Silica ◽  
Bimetallic Catalysts ◽  
Silica Aerogel ◽  
Chemical Reduction ◽  
Ammonia Borane ◽  
Microwave Assisted ◽  
Highly Active ◽  
Supported Platinum ◽  
Microwave Assisted Method

In this study, platinum–cobalt bimetallic catalysts supported on mesoporous silica aerogel (SAG), abbreviated as PCx/SAG,x= 1–6, were prepared by facile chemical reduction and a simple, efficient microwave-assisted method using Co and Pt precursors.

Microwave-assisted deposition of a highly active cobalt catalyst on mesoporous silica for photochemical CO2 reduction

2017 ◽  
Vol 46 (32) ◽  
pp. 10721-10726 ◽  
Author(s):  
Thomas Fenton ◽  
Samantha Gillingham ◽  
Tong Jin ◽  
Gonghu Li
Keyword(s):  
Thermal Treatment ◽  
Mesoporous Silica ◽  
Cobalt Catalyst ◽  
Co2 Reduction ◽  
Silica Surfaces ◽  
Microwave Assisted ◽  
Highly Active

Uniform Co(iii) sites were obtained on the silica surfaces. Thermal treatment under vacuum resulted in significant changes in the properties of the Co(iii) sites.

Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation

2012 ◽  
Vol 16 (10) ◽  
pp. 3147-3157 ◽  
Author(s):  
S. Stevanović ◽  
D. Tripković ◽  
J. Rogan ◽  
K. Popović ◽  
J. Lović ◽  
...  
Keyword(s):  
Bimetallic Catalysts ◽  
Ethanol Oxidation ◽  
Polyol Synthesis ◽  
Microwave Assisted ◽  
Supported Platinum

scholarly journals Hollow Mesoporous Silica Supported Ruthenium Nanoparticles: A Highly Active and Reusable Catalyst for H2Generation from the Hydrolysis of NaBH4

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Shuge Peng ◽  
Bingli Pan ◽  
Haijiao Hao ◽  
Jun Zhang
Keyword(s):  
Mesoporous Silica ◽  
Photoelectron Spectroscopy ◽  
Chemical Reduction ◽  
Solution Temperature ◽  
Reusable Catalyst ◽  
X Ray ◽  
Ru Nanoparticles ◽  
Highly Active ◽  
Hollow Mesoporous Silica ◽  
Hydrolysis Of

Ru nanoparticles supported on hollow mesoporous silica (HMS), which are prepared viain situwet chemical reduction, have been investigated as the highly efficient heterogeneous catalyst for H2generation from the hydrolysis of an alkaline NaBH4solution. Many techniques, including X-ray diffraction (XRD), transmission electron microscope (TEM), and X-ray photoelectron spectroscopy (XPS), are used to characterize the as-prepared nanocatalyst (Ru/HMS). Factors, such as Ru loadings in HMS, catalyst concentration, and solution temperature, on catalytic property and reutilization are investigated in this work. A rate of H2generation as high as 18.6 L min−1 g−1(Ru) using 1 wt% NaBH4solution containing 3 wt% NaOH and 40 mg of Ru/HMS catalyst can be reached at room temperature. The minimum apparent activation energy (Ea) of H2generation, obtained by fitting the curve ofEavalues versus catalyst amount, is determined to be 46.7 ± 1 kJ/mol. The residual catalytic activity of the repeated Ru/HMS still remains 47.7% after 15 runs, which perhaps results from the incorporation of the residual by-product (NaBO2) in the pores of HMS based on the analysis of XPS.

scholarly journals Microwave-Assisted Synthesis of Pd Nanoparticles and Catalysis Application for Suzuki Coupling Reactions

2017 ◽  
Vol 11 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Jian Zhang ◽  
Xuefeng Bai
Keyword(s):  
Chemical Reduction ◽  
Phenylboronic Acid ◽  
Suzuki Coupling ◽  
Pd Nanoparticles ◽  
Xrd Analysis ◽  
Microwave Assisted Synthesis ◽  
Coupling Reactions ◽  
Microwave Assisted ◽  
Highly Active ◽  
Aryl Bromides

A facile and efficient method was developed for the synthesis of highly active palladium nanoparticles (PdNPs) by microwave-assisted chemical reduction. The PdNPs with different morphology were prepared with or without KBr (capping agent) using ethylene glycol (EG) and citric acid (CA) as reducing agent in the presence of polyvinylpyrrolidone (PVP), respectively. The as-prepared PdNPs were characterized by (UV-Visible Spectrophotometer) UV-Vis, transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. The results showed that the PdNPs reduced by EG without KBr (PdNPs-EG) has smaller particle size than other PdNPs. The remarkable catalytic activity of the PdNPs catalysts are obtained using a low amount of PdNPs (0.1 mmol‰) using K2CO3 as base and EtOH/H2O as solvent toward Suzuki coupling reactions of aryl bromides and phenylboronic acid for 15 min.

Heterogeneous rhodium–tin nanoparticles: highly active and durable electrocatalysts for the oxidation of ethanol

2015 ◽  
Vol 3 (33) ◽  
pp. 17130-17134 ◽  
Author(s):  
Minjeh Ahn ◽  
In Young Cha ◽  
Joong Kee Lee ◽  
Sung Jong Yoo ◽  
Yung-Eun Sung
Keyword(s):  
Electrocatalytic Oxidation ◽  
Microwave Assisted ◽  
Highly Active ◽  
Tin Nanoparticles ◽  
Microwave Assisted Method ◽  
Oxidation Of Ethanol

Highly active and durable heterogeneous Rh–Sn nanoparticles for the electrocatalytic oxidation of ethanol have been synthesized using a simple and facile surfactant-free microwave-assisted method.

scholarly journals Highly Active Ni- and Co-Based Bimetallic Catalysts for Hydrogen Production From Ammonia-Borane

2019 ◽  
Vol 7 ◽  
Author(s):  
Shinya Furukawa ◽  
Genki Nishimura ◽  
Tomoaki Takayama ◽  
Takayuki Komatsu
Keyword(s):  
Hydrogen Production ◽  
Bimetallic Catalysts ◽  
Ammonia Borane ◽  
Highly Active
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