A novel magnetic NiFe2O4@graphene–Pd multifunctional nanocomposite for practical catalytic application

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79548-79555 ◽  
Author(s):  
Xiaohua Zhao ◽  
Xiang Liu
Keyword(s):  
Magnetic Field ◽  
Catalytic Activity ◽  
External Magnetic Field ◽  
Suzuki Reaction ◽  
Simple Application ◽  
Hybrid Catalyst ◽  
Catalytic Application

A novel NiFe2O4@GN–Pd was used as outstanding catalyst for the Suzuki reaction in EtOH/H2O. The hybrid catalyst could be recycled and reused with the simple application of an external magnetic field, while keeping similar catalytic activity for six successive reactions.

Shape-dependent catalytic activity of Fe3O4 nanostructures under the influence of an external magnetic field for multicomponent reactions in aqueous media

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 74091-74101 ◽  
Author(s):  
E. Rafiee ◽  
M. Joshaghani ◽  
P. Ghaderi-Shekhi Abadi
Keyword(s):  
Magnetic Field ◽  
Catalytic Activity ◽  
External Magnetic Field ◽  
Multicomponent Reactions ◽  
Aqueous Media ◽  
Imidazole Derivatives

Fe3O4 nanostructures were synthesized under external magnetic field, shown shape-dependent catalytic activity for the synthesis of imidazole derivatives in water.

Synthesis and catalytic application of PVP-coated Ru nanoparticles embedded in a porous metal–organic framework

2014 ◽  
Vol 43 (29) ◽  
pp. 11295-11298 ◽  
Author(s):  
Masaaki Sadakiyo ◽  
Masaru Kon-no ◽  
Katsutoshi Sato ◽  
Katsutoshi Nagaoka ◽  
Hidetaka Kasai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Metal Organic Framework ◽  
Porous Metal ◽  
Hybrid Catalyst ◽  
Ru Nanoparticles ◽  
Catalytic Application ◽  
Co Oxidation Reaction ◽  
Metal Organic ◽  
Organic Framework

A hybrid catalyst consisting of polymer-coated Ru nanoparticles embedded in a porous metal–organic framework of ZIF-8 exhibits higher catalytic activity and higher CO2 selectivity in a CO oxidation reaction with H2 gas feeds.

New magnetically recoverable palladium-based catalysts active in the alkoxycarbonylation of iodobenzene

2016 ◽  
Vol 88 (5) ◽  
pp. 445-455 ◽  
Author(s):  
Andrea Vavasori ◽  
Loris Calgaro ◽  
Giuseppe Quartarone ◽  
Lucio Ronchin ◽  
Claudio Tortato
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Benzoic Acid ◽  
Complete Recovery ◽  
Simple Application ◽  
Magnetically Recoverable Catalysts ◽  
Recoverable Catalysts ◽  
Acid Esters

AbstractNew magnetically recoverable catalysts have been synthesized by deposition of 1% palladium (Pd)-metal on the polymer poly(1-oxo-trimethylene), containing 15% of magnetite. The magnetite allows the complete recovery of the catalyst with the simple application of an external magnetic field. The activity of such a catalyst has been studied under phosphine-free conditions in the alkoxycarbonylation of iodobenzene to the corresponding benzoic acid esters.

scholarly journals New Trendy Magnetic C-Scorpionate Iron Catalyst and Its Performance towards Cyclohexane Oxidation

Catalysts ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 69 ◽  
Author(s):  
Ana Ribeiro ◽  
Inês Matias ◽  
Elisabete Alegria ◽  
Ana Ferraria ◽  
Ana Botelho do Rego ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Catalytic Activity ◽  
External Magnetic Field ◽  
Microwave Irradiation ◽  
Iron Catalyst ◽  
Cyclohexane Oxidation ◽  
Butyl Hydroperoxide ◽  
Tert Butyl Hydroperoxide ◽  
Synthetic Procedure ◽  
First Time

For the first time, a magnetic C-scorpionate catalyst was prepared from the iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz = pyrazol-1-yl) and ferrite, using the sustainable mechanochemical synthetic procedure. Its catalytic activity for the cyclohexane oxidation with tert-butyl hydroperoxide (TBHP) was evaluated in different conditions, namely under microwave irradiation and under the effect of an external magnetic field. The use of such magnetic conditions significantly shifted the catalyst alcohol/ketone selectivity, thus revealing a promising, easy new protocol for tuning selectivity in important catalytic processes.

Heterogeneous gold(III)-catalyzed tandem cyclization of 2-alkynylbenzamides with ammonium acetate toward 1-aminoisoquinolines

2020 ◽  
pp. 174751982092473
Author(s):  
Weisen Yang ◽  
Yingying Du ◽  
Feiyan Yi ◽  
Mingzhong Cai
Keyword(s):  
Magnetic Field ◽  
Catalytic Activity ◽  
Magnetic Nanoparticles ◽  
External Magnetic Field ◽  
Ammonium Acetate ◽  
Gold Catalyst ◽  
Apparent Loss ◽  
Tandem Cyclization ◽  
High Yields

Heterogeneous tandem cyclization of 2-alkynylbenzamides with ammonium acetate is achieved in acetonitrile at 85 °C using a magnetic nanoparticles-immobilized bipy-gold(III) complex and AgSbF6 as catalysts to afford a variety of 1-aminoisoquinoline derivatives in moderate to high yields. This heterogeneous gold catalyst can be easily recovered from the reaction mixture by simply applying an external magnetic field and can be recycled at least seven times without any apparent loss of catalytic activity.

Synthesis of magnetic nanoflower immobilized lipase and its continuous catalytic application

2019 ◽  
Vol 43 (28) ◽  
pp. 11082-11090 ◽  
Author(s):  
Weifan Ren ◽  
Yao Li ◽  
Jihui Wang ◽  
Lin Li ◽  
Longquan Xu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Enzymatic Activity ◽  
Immobilized Lipase ◽  
Reaction System ◽  
Catalytic Application ◽  
Free Lipase

We have synthesized a kind of magnetic lipase–Cu3(PO4)2 nanoflowers (lipase@MNFs), which can be separated quickly from the reaction system under the external magnetic field. Compared with free lipase, the lipase@MNFs exhibited higher enzymatic activity (∼110%) and stability.

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