Sonication induced peptide-appended bolaamphiphile hydrogels for in situ generation and catalytic activity of Pt nanoparticles

Soft Matter ◽  
2012 ◽  
Vol 8 (19) ◽  
pp. 5301 ◽  
Author(s):  
Indrajit Maity ◽  
Dnyaneshwar B. Rasale ◽  
Apurba K. Das
Keyword(s):  
Catalytic Activity ◽  
Pt Nanoparticles ◽  
In Situ Generation

Photo-synergistic promoted in situ generation of Bi0–BiSbO4 nanostructures as an efficient catalyst for nitrobenzene reduction

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103013-103018 ◽  
Author(s):  
Mengqing Liu ◽  
Li Lv ◽  
Xiaomeng Du ◽  
Junyu Lang ◽  
Yiguo Su ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Efficient Catalyst ◽  
Nitrobenzene Reduction ◽  
In Situ Generation

This work reports on the construction of Bi0–BiSbO4 nanostructures to show photo-synergistic and efficient catalytic activity toward nitrobenzenes reduction.

scholarly journals In Situ Encapsulated Pt Nanoparticles Dispersed in Low Temperature Oxygen for Partial Oxidation of Methane to Syngas

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 720 ◽  
Author(s):  
Junwen Wang ◽  
Lichao Ma ◽  
Chuanmin Ding ◽  
Yanan Xue ◽  
Yongkang Zhang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Catalytic Activity ◽  
Low Temperature ◽  
Partial Oxidation ◽  
Pt Nanoparticles ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane ◽  
Transmission Electron

Highly dispersed ultra-small Pt nanoparticles limited in nanosized silicalite-1 zeolite were prepared by in situ encapsulation strategy using H2PtCl6·6H2O as a precursor and tetrapropylammonium hydroxide as a template. The prepared Pt@S-1 catalyst was characterized by X-ray diffraction (XRD), inductively coupled plasma (ICP), transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM), N2 adsorption-desorption, CO adsorption, and TGA techniques and exhibited unmatched catalytic activity and sintering resistance in the partial oxidation of methane to syngas. Strikingly, Pt@S-1 catalyst with further reduced size and increased dispersibility of Pt nanoparticles showed enhanced catalytic activity after low-temperature oxygen calcination. However, for Pt/S-1 catalyst, low-temperature oxygen calcination did not improve its catalytic activity.

Dual functionalized task specific ionic liquid promoted in situ generation of palladium nanoparticles in water: synergic catalytic system for Suzuki–Miyaura cross coupling

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 79061-79069 ◽  
Author(s):  
Jayavant D. Patil ◽  
Suyog N. Korade ◽  
Supriya A. Patil ◽  
Dipak S. Gaikwad ◽  
Dattaprasad M. Pore
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Cross Coupling ◽  
Reducing Agent ◽  
High Catalytic Activity ◽  
In Situ Generation ◽  
Task Specific Ionic Liquid

A new task specific ionic liquid with hydroxyl and prolinate functionalities acts as a reducing agent and serves as a ligand and stabilizer for in situ formed palladium nanoparticles. This system displays high catalytic activity for Suzuki–Miyaura cross-coupling in water.

In situ generation of a high-performance Pd-polypyrrole composite with multi-functional catalytic properties

2014 ◽  
Vol 43 (17) ◽  
pp. 6396-6405 ◽  
Author(s):  
Meenakshi Choudhary ◽  
Rafique Ul Islam ◽  
Michael J. Witcomb ◽  
Kaushik Mallick
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
High Performance ◽  
Catalytic Properties ◽  
In Situ Generation ◽  
Polypyrrole Composite

Catalytic activity of palladium nanoparticles for PCET reaction.

In situ generation of functionality in a reactive binicotinic-acid-based ligand for the design of multi-functional copper(ii) complexes: syntheses, structures and properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1871-1880 ◽  
Author(s):  
Dongsheng Deng ◽  
Hui Guo ◽  
Guohui Kang ◽  
Lufang Ma ◽  
Xu He ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Conditions ◽  
Strecker Reaction ◽  
Structures And Properties ◽  
In Situ Generation

Five copper binicotinic complexes have been synthesized depending on the reaction conditions. Complexes 1 and 2 display excellent catalytic activity for Strecker reaction of imines.

Highly diastereo- and enantioselective organocatalytic synthesis of trifluoromethylated erythritols based on the in situ generation of unstable trifluoroacetaldehyde

2021 ◽  
Author(s):  
Kazumasa Funabiki ◽  
Toshiya Gotoh ◽  
Ryunosuke Kani ◽  
Toshiyasu Inuzuka ◽  
Yasuhiro Kubota
Keyword(s):  
Trifluoromethyl Group ◽  
In Situ Generation

A highly diastereo- and enantioselective organocatalytic method to synthesise erythritols bearing a trifluoromethyl group has been investigated.

Recent advances in Minisci-type reactions and applications in organic synthesis

2020 ◽  
Vol 24 ◽  
Author(s):  
Wengui Wang ◽  
Shoufeng Wang
Keyword(s):  
Free Radical ◽  
Hydrogen Atom ◽  
Organic Synthesis ◽  
Radical Reactivity ◽  
Atom Loss ◽  
Radical Generation ◽  
In Situ Generation ◽  
Thermal Cleavage ◽  
Synthetic Chemist

Abstract:: Minisci-type reactions have become widely known as reactions that involve the addition of carbon-centered radicals to basic heteroarenes followed by formal hydrogen atom loss. While the originally developed protocols for radical generation remain in active use today, in recent years by a new array of radical generation strategies allow use of a wider variety of radical precursors that often operate under milder and more benign conditions. New transformations based on free radical reactivity are now available to a synthetic chemist looking to utilize a Minisci-type reaction. Radical-generation methods based on photoredox catalysis and electrochemistry, which utilize thermal cleavage or the in situ generation of reactive radical precursors, have become popular approaches. Our review will cover the remarkably literature that has appeared on this topic in recent 5 years, from 2015-01 to 2020-01, in an attempt to provide guidance to the synthetic chemist, on both the challenges that have been overcome and applications in organic synthesis.

Catalytic activity of rhodium(I) complexes containing (ω-trimethylsilylalkyl)diphenylphosphines

1980 ◽  
Vol 45 (8) ◽  
pp. 2219-2223 ◽  
Author(s):  
Marie Jakoubková ◽  
Martin Čapka
Keyword(s):  
Catalytic Activity ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Electron Density ◽  
Phosphorus Atom ◽  
Proton Acceptor ◽  
Trimethylsilyl Group ◽  
Kinetics Of

Kinetics of homogenous hydrogenation of 1-heptene catalysed by rhodium(I) complexes prepared in situ from μ,μ'-dichloro-bis(cyclooctenerhodium) and phosphines of the type RP(C6H5)2 (R = -CH3, -(CH2)nSi(CH3)3; n = 1-4) have been studied. The substitution of the ligands by the trimethylsilyl group was found to increase significantly the catalytic activity of the complexes. The results are discussed in relation to the electron density on the phosphorus atom determined by 31P NMR spectroscopy and to its proton acceptor ability determined by IR spectroscopy.

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