Kinetic Profile and Catalytic Activity of Transition Metal-Based Ionic Liquids for Reduction of Nitroarenes via In Situ Formation of Nanoparticles

2017 ◽  
Vol 2 (23) ◽  
pp. 6833-6843 ◽  
Author(s):  
Sachin R. Thawarkar ◽  
Nageshwar D. Khupse ◽  
Anil Kumar
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Transition Metal ◽  
Kinetic Profile ◽  
In Situ Formation

scholarly journals Ultra-Small Pd(0) Nanoparticles into a Designed Semisynthetic Lipase: An Efficient and Recyclable Heterogeneous Biohybrid Catalyst for the Heck Reaction under Mild Conditions

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2358 ◽  
Author(s):  
David Lopez-Tejedor ◽  
Blanca de las Rivas ◽  
Jose M. Palomo
Keyword(s):  
Catalytic Activity ◽  
Protein Structure ◽  
Heck Reaction ◽  
Catalytic Performance ◽  
Reducing Agent ◽  
Chemically Modified ◽  
Mild Conditions ◽  
In Situ Formation ◽  
Geobacillus Thermocatenulatus

A novel heterogeneous enzyme-palladium (Pd) (0) nanoparticles (PdNPs) bionanohybrid has been synthesized by an efficient, green, and straightforward methodology. A designed Geobacillus thermocatenulatus lipase (GTL) variant genetically and then chemically modified by the introduction of a tailor-made cysteine-containing complementary peptide- was used as the stabilizing and reducing agent for the in situ formation of ultra-small PdNPs nanoparticles embedded on the protein structure. This bionanohybrid was an excellent catalyst in the synthesis of trans-ethyl cinnamate by Heck reaction at 65 °C. It showed the best catalytic performance in dimethylformamide (DMF) containing 10–25% of water as a solvent but was also able to catalyze the reaction in pure DMF or with a higher amount of water as co-solvent. The recyclability and stability were excellent, maintaining more than 90% of catalytic activity after five cycles of use.

In Situ Formation of Mixed Phosphine−Imidazolylidene Palladium Complexes in Room-Temperature Ionic Liquids

2001 ◽  
Vol 20 (18) ◽  
pp. 3848-3850 ◽  
Author(s):  
Christopher J. Mathews ◽  
Paul J. Smith ◽  
Tom Welton ◽  
Andrew J. P. White ◽  
David J. Williams
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Palladium Complexes ◽  
Room Temperature Ionic Liquids ◽  
In Situ Formation

scholarly journals In-situ formation, thermal decomposition, and adsorption studies of transition metal carbonyl complexes with short-lived radioisotopes

2014 ◽  
Vol 102 (12) ◽  
Author(s):  
Julia Even ◽  
Alexander Yakushev ◽  
Christoph Emanuel Düllmann ◽  
Jan Dvorak ◽  
Robert Eichler ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Transition Metal ◽  
Metal Carbonyl ◽  
Carbonyl Complexes ◽  
Adsorption Studies ◽  
Metal Carbonyl Complexes ◽  
In Situ Formation

AbstractWe report on the

ChemInform Abstract: In situ Formation of NOx and Br Anion for Aerobic Oxidation of Benzylic Alcohols Without Transition Metal.

ChemInform ◽  
2010 ◽  
Vol 41 (24) ◽  
pp. no-no
Author(s):  
Guanyu Yang ◽  
Wei Wang ◽  
Weimin Zhu ◽  
Cunbin An ◽  
Xinqin Gao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Aerobic Oxidation ◽  
Benzylic Alcohols ◽  
In Situ Formation

In situ reduction of well-dispersed nickel nanoparticles on hierarchical nickel silicate hollow nanofibers as a highly efficient transition metal catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32580-32585 ◽  
Author(s):  
Yang Yang ◽  
Renxi Jin ◽  
Shuo Zhao ◽  
Jihong Liu ◽  
Yunfeng Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Nickel Nanoparticles ◽  
Metal Catalyst ◽  
Ni Nanoparticles ◽  
In Situ Reduction ◽  
Hollow Nanofibers ◽  
Transition Metal Catalyst ◽  
Nickel Silicate

Ni nanoparticles were immobilized on the hierarchically double-shell nickel silicate hollow nanofibers, the composites exhibited an excellent catalytic activity.

In situ Formation of NOx and Br Anion for Aerobic Oxidation of Benzylic Alcohols without Transition Metal

Synlett ◽  
2010 ◽  
Vol 2010 (03) ◽  
pp. 437-440 ◽  
Author(s):  
Guanyu Yang ◽  
Maoping Song ◽  
Wei Wang ◽  
Weimin Zhu ◽  
Cunbin An ◽  
...  
Keyword(s):  
Transition Metal ◽  
Aerobic Oxidation ◽  
Benzylic Alcohols ◽  
In Situ Formation

scholarly journals Catalytic Oxidative/Extractive Desulfurization of Model Oil using Transition Metal Substituted Phosphomolybdates-Based Ionic Liquids

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 639 ◽  
Author(s):  
Yunlei Li ◽  
Yanjie Zhang ◽  
Panfeng Wu ◽  
Caiting Feng ◽  
Ganglin Xue
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Transition Metal ◽  
Sulfur Removal ◽  
Oxidative Desulfurization ◽  
High Catalytic Activity ◽  
Reaction Conditions ◽  
Extraction Solvent ◽  
Model Oil ◽  
Optimal Reaction

Polyoxometalates based ionic liquids (POM-ILs) exhibit a high catalytic activity in oxidative desulfurization. In this paper, four new POM-IL hybrids based on transition metal mono-substituted Keggin-type phosphomolybdates, [Bmim]5[PMo11M(H2O)O39] (Bmim = 1-butyl 3-methyl imidazolium; M = Co2+, Ni2+, Zn2+, and Mn2+), have been synthesized and used as catalysts for the oxidation/extractive desulfurization of model oil, in which ILs are used as the extraction solvent and H2O2 as an oxidant under very mild conditions. The factors that affected the desulfurization efficiency were studied and the optimal reaction conditions were obtained. The results showed that the [Bmim]5[PMo11Co(H2O)O39] catalyst demonstrated the best catalytic activity, with sulfur-removal of 99.8%, 85%, and 63% for dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT), and benzothiophene (BT), respectively, in the case of extraction combining with a oxidative desulfurization system under optimal reaction conditions (5 mL model oil (S content 500 ppm), n(catalyst) = 4 μmol, n(H2O2)/n(Substrate) = 5, T = 50 °C for 60 min with [Omim]BF4 (1 mL) as the extractant). The catalyst can be recycled at least 8 times, and still has stability and high catalytic activity for consecutive desulfurization. Probable reaction mechanisms have been proposed for catalytic oxidative/extractive desulfurization.

Self-reducing asymmetric polymer membrane for in situ formation and containment of noble metal nanocatalysts

2015 ◽  
Vol 17 (8) ◽  
pp. 4157-4161 ◽  
Author(s):  
Sankararao Chappa ◽  
Rakesh N. Shinde ◽  
Ashok K. Pandey
Keyword(s):  
Catalytic Activity ◽  
Noble Metal ◽  
Redox Reactions ◽  
Polymer Membrane ◽  
Good Catalytic Activity ◽  
In Situ Formation ◽  
Inorganic And Organic

Highly stable metal nanocatalysts formed in self-reducing asymmetric polymer membrane exhibit good catalytic activity in inorganic and organic redox reactions.

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