Highly efficient base catalysis and sulfide oxidation reactions over new functionalized mesoporous polymers

RSC Advances ◽  
2012 ◽  
Vol 2 (16) ◽  
pp. 6464 ◽  
Author(s):  
Noor Salam ◽  
Paramita Mondal ◽  
John Mondal ◽  
Anupam Singha Roy ◽  
Asim Bhaumik ◽  
...  
Keyword(s):  
Sulfide Oxidation ◽  
Base Catalysis ◽  
Oxidation Reactions ◽  
Highly Efficient

scholarly journals Hierarchically skeletal multi-layered Pt-Ni nanocrystals for highly efficient oxygen reduction and methanol oxidation reactions

2021 ◽  
Vol 42 (4) ◽  
pp. 648-657
Author(s):  
Shibo Li ◽  
Zhi Qun Tian ◽  
Yang Liu ◽  
Zheng Jang ◽  
Syed Waqar Hasan ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Methanol Oxidation ◽  
Oxidation Reactions ◽  
Highly Efficient

scholarly journals Heterogeneous catalysis with encapsulated haem and other synthetic porphyrins: Harnessing the power of porphyrins for oxidation reactions

2018 ◽  
Vol 16 (1) ◽  
pp. 763-789 ◽  
Author(s):  
Nicola A. Dare ◽  
Timothy J. Egan
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Substrates ◽  
Oxidation Reactions ◽  
Highly Efficient ◽  
Protein Environment

AbstractEncapsulated metalloporphyrins have been widely studied for their use as efficient heterogeneous catalysts, inspired by the known catalytic activity of porphyrins in haemoproteins. The oxidation of organic substrates by haemoproteins is one of the well-known roles of these proteins, in which the haem (ferriprotoporphyrin IX = FePPIX) cofactor is the centre of reactivity. While these porphyrins are highly efficient catalysts in the protein environment, once removed, they quickly lose their reactivity. It is for this reason that they have garnered much interest in the field of heterogeneous catalysis of oxidation reactions. This review details current research in the field, focusing on the application of encapsulated haem, and other synthetic metalloporphyrins, applied to oxidation reactions.

Bimetallic titanium complex catalyzed enantioselective oxidation of thioethers using aqueous H2O2 as a terminal oxidant

RSC Advances ◽  
2015 ◽  
Vol 5 (59) ◽  
pp. 47732-47739 ◽  
Author(s):  
Prasanta Kumar Bera ◽  
Naveen Gupta ◽  
Sayed H. R. Abdi ◽  
Noor-ul H. Khan ◽  
Rukhsana I. Kureshy ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic System ◽  
Sulfide Oxidation ◽  
Environmentally Benign ◽  
Aqueous Hydrogen Peroxide ◽  
Titanium Complex ◽  
Enantioselective Oxidation ◽  
Highly Efficient

This study represents a highly efficient sulfide oxidation catalytic system using a non-toxic Ti-catalyst and environmentally benign aqueous hydrogen peroxide.

Interfacial lithium-nitrogen bond catalyzes sulfide oxidation reactions in high-loading Li2S cathode

2021 ◽  
pp. 132352
Author(s):  
Jian Wang ◽  
Jing Zhang ◽  
Shaorong Duan ◽  
Tie Li ◽  
Lujie Jia ◽  
...  
Keyword(s):  
Sulfide Oxidation ◽  
High Loading ◽  
Oxidation Reactions ◽  
Nitrogen Bond

Polymer immobilized tantalum(v)–amino acid complexes as selective and recyclable heterogeneous catalysts for oxidation of olefins and sulfides with aqueous H2O2

2019 ◽  
Vol 43 (44) ◽  
pp. 17251-17266
Author(s):  
Gangutri Saikia ◽  
Kabirun Ahmed ◽  
Chandrasee Rajkhowa ◽  
Mitu Sharma ◽  
Hiya Talukdar ◽  
...  
Keyword(s):  
Amino Acid ◽  
Heterogeneous Catalysts ◽  
Sulfide Oxidation ◽  
Reaction Conditions ◽  
Amino Acid Complexes ◽  
Highly Efficient ◽  
Recyclable Catalysts ◽  
Oxidation Of Olefins ◽  
Polymer Supported

Polymer supported peroxotantalate based heterogeneous catalysts served as highly efficient, selective and recyclable catalysts for alkene epoxidation and sulfide oxidation with green oxidant aqueous H2O2 under mild reaction conditions.

scholarly journals Fast electrosynthesis of Fe-containing layered double hydroxide arrays toward highly efficient electrocatalytic oxidation reactions

2015 ◽  
Vol 6 (11) ◽  
pp. 6624-6631 ◽  
Author(s):  
Zhenhua Li ◽  
Mingfei Shao ◽  
Hongli An ◽  
Zixuan Wang ◽  
Simin Xu ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Small Molecule ◽  
Electrocatalytic Oxidation ◽  
Oxidation Reactions ◽  
Highly Efficient ◽  
Electrocatalytic Performance ◽  
Double Hydroxide

Fast electrosynthesis of Fe-containing layered double hydroxide arrays and their highly-efficient electrocatalytic performance toward small molecule oxidation reactions.

scholarly journals Ultra-small and highly dispersive iron oxide hydroxide as an efficient catalyst for oxidation reactions: a Swiss-army-knife catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mojtaba Amini ◽  
Younes Mousazade ◽  
Zahra Zand ◽  
Mojtaba Bagherzadeh ◽  
Mohammad Mahdi Najafpour
Keyword(s):  
Iron Oxide ◽  
Water Oxidation ◽  
Sulfide Oxidation ◽  
Oxidation Reactions ◽  
Efficient Catalyst ◽  
Oxide Hydroxide ◽  
Alkaline Conditions ◽  
Epoxidation Of Alkenes ◽  
A Current ◽  
Electrochemical Oxygen

AbstractUltra-small and highly dispersive (< 10 nm) iron oxide hydroxide is characterized by some methods. The compound is an efficient and stable catalyst for alcohol oxidation, organic sulfide oxidation, and epoxidation of alkenes in the presence of H2O2. The electrochemical oxygen-evolution reaction of the iron oxide hydroxide is also tested under acidic, neutral, and alkaline conditions. In the presence of the iron oxide hydroxide, excellent conversions (75–100%) and selectivities of substrates (92–97%), depending on the nature of the sulfide, were obtained. Benzylalcohols having electron-donating and-withdrawing substituents in the aromatic ring were oxidized to produce the corresponding aldehydes with excellent conversion (65–89%) and selectivity (96–100%) using this iron oxide hydroxide. The conversion of styrene and cyclooctene toward the epoxidation in the presence of this catalyst are 60 and 53%, respectively. Water oxidation for the catalysts was investigated at pH 2, 6.7, 12, and 14. The onset of OER at pH 14 is observed with a 475 mV overpotential. At 585 mV overpotential, a current density of more than 0.18 mA/cm2 and a turnover frequency of 1.5/h is observed. Operando high-resolution visible spectroscopy at pH 14, similar to previously reported investigations, shows that Fe(IV)=O is an intermediate for water oxidation.

scholarly journals Efficient and selective hydrogen peroxide-mediated oxidation of sulfides in batch and segmented and continuous flow using a peroxometalate-based polymer immobilised ionic liquid phase catalyst

2015 ◽  
Vol 17 (3) ◽  
pp. 1559-1571 ◽  
Author(s):  
S. Doherty ◽  
J. G. Knight ◽  
M. A. Carroll ◽  
J. R. Ellison ◽  
S. J. Hobson ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Ionic Liquid ◽  
Liquid Phase ◽  
Continuous Flow ◽  
Sulfide Oxidation ◽  
Oxidation Of Sulfides ◽  
Highly Efficient ◽  
Mediated Oxidation

Highly efficient sulfide oxidation has been achieved under segmented and continuous flow using a peroxometalate-based polymer immobilised ionic liquid phase catalyst.

Synthesis of α-Thiooximes by Addition of Thiols to N,N-Bis(oxy)-enamines: A Comparative Study of S-, N-, and O-Nucleo­philes in Michael Reaction with Nitrosoalkene Species

Synlett ◽  
2018 ◽  
Vol 29 (10) ◽  
pp. 1334-1339 ◽  
Author(s):  
Alexey Sukhorukov ◽  
Yana Naumovich ◽  
Aleksandr Kokuev ◽  
Sema Ioffe
Keyword(s):  
Comparative Study ◽  
Nucleophilic Addition ◽  
Michael Reaction ◽  
Lewis Base ◽  
Base Catalysis ◽  
Relative Reactivity ◽  
Efficient Manner ◽  
Highly Efficient ◽  
Relative Nucleophilicity ◽  
First Time

Nucleophilic addition of thiols to N,N-bis(oxy)enamines (nitrosoalkene acetals) produce valuable α-thiooximes in a highly efficient manner. The reaction was found to be solvent-dependent, likely because of distinct mechanisms operating in nonpolar and basic solvents (involving either Brønsted acid or Lewis base catalysis). By performing a series of competition experiments, the relative reactivity of S-, N-, and O-nucleophiles in reaction with N,N-bis(oxy)enamines was determined for the first time. Interestingly, the relative nucleophilicity was found to be highly dependent on the solvent, which allows regioselective control of these reactions by using an appropriate medium.

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