scholarly journals Novel Oxidative Desulfurization of a Model Fuel with H2O2 Catalyzed by AlPMo12O40 under Phase Transfer Catalyst-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Márcio José da Silva ◽  
Lidiane Faria dos Santos
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Oxidative Desulfurization ◽  
Phase Transfer Catalyst ◽  
Environmentally Benign ◽  
Aluminum Salts ◽  
Keggin Heteropolyacids ◽  
Model Fuel ◽  
Catalyzed Reactions ◽  
Short Time

A novel process was developed for oxidative desulfurization (ODS) in the absence of a phase transfer catalyst (PTC) using only Keggin heteropolyacids and their aluminum salts as catalysts. Reactions were performed in biphasic mixtures of isooctane/acetonitrile, with dibenzothiophene (DBT) as a model sulfur compound and hydrogen peroxide as the oxidant. Remarkably, only the AlPMo12O40-catalyzed reactions resulted in complete oxidation of DBT into DBT sulfone, which was totally extracted by acetonitrile, reducing the sulfur content of isooctane from the 1000 ppm to <1 ppm. Ranking of catalyst efficiency is as follows: AlPMo12O40 > H3PMo12O40 > AlPW12O40 > H3PW12O40. The absence of a PTC, acidic organic peroxides, and the use of hydrogen peroxide, an environmentally benign oxidant, make up the positive aspects of AlPMo12O40-catalyzed ODS reactions. In these reactions, high rates of DBT removal (ca. 100%) were achieved within a short time (ca. 2 hours) and under mild reaction conditions.

A new halide-free efficient reaction-controlled phase-transfer catalyst based on silicotungstate of [(C18H37)2(CH3)2N]3[SiO4H(WO5)3] for olefin epoxidation, oxidation of sulfides and alcohols with hydrogen peroxide

RSC Advances ◽  
2014 ◽  
Vol 4 (61) ◽  
pp. 32054-32062 ◽  
Author(s):  
Baochun Ma ◽  
Wei Zhao ◽  
Fuming Zhang ◽  
Yingshuai Zhang ◽  
Songyun Wu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Alcohol Oxidation ◽  
Phase Transfer Catalyst ◽  
Environmentally Benign ◽  
Olefin Epoxidation ◽  
Oxidation Of Sulfides ◽  
Highly Efficient

A new environmentally benign and highly efficient reaction-controlled phase-transfer catalyst for olefin epoxidation, sulfide and alcohol oxidation was developed.

Environmentally benign nucleophilic substitution reaction of arylalkyl halides in water using CTAB as the inverse phase transfer catalyst

2019 ◽  
Vol 43 (40) ◽  
pp. 16041-16045 ◽  
Author(s):  
Atul K. Godha ◽  
Jayaraman Thiruvengadam ◽  
Viswanadhan Abhilash ◽  
Prajwal Balgi ◽  
A. V. Narayanareddy ◽  
...  
Keyword(s):  
Nucleophilic Substitution ◽  
Substitution Reaction ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Regioselective Synthesis ◽  
Environmentally Benign ◽  
Nucleophilic Substitution Reaction ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Inverse Phase Transfer Catalyst

An environmentally benign, scalable and highly selective C-arylalkylation of active methylene compounds is developed using CTAB as the inverse phase transfer catalyst. The methodology is also applicable to the regioselective synthesis of N-aralkyl/alkyl 2-pyridones.

Homogeneous oxidative desulfurization catalyzed by a recoverable reaction-controlled phase transfer catalyst based on trilacunary Keggin polyoxometalate

2019 ◽  
Vol 43 (19) ◽  
pp. 7363-7370 ◽  
Author(s):  
Jianwei Ding ◽  
Yongqiang Zhang ◽  
Rui Wang
Keyword(s):  
Phase Transfer ◽  
Oxidative Desulfurization ◽  
Phase Transfer Catalyst ◽  
Keggin Polyoxometalate ◽  
Desulfurization Efficiency

A phosphotungstic reaction-controlled phase transfer catalyst was prepared and applied for the homogeneous oxidative desulfurization. Excellent desulfurization efficiency was achieved at 60 °C and the catalyst can be easily separated and recycled with ideal results.

scholarly journals Correction: Hydrophilic phase transfer catalyst based on the sulfoacid group and polyoxometalate for the selective oxidation of sulfides in water with hydrogen peroxide

2017 ◽  
Vol 41 (2) ◽  
pp. 889-889 ◽  
Author(s):  
Wei Zhao ◽  
Chunxia Yang ◽  
Kecheng Liu ◽  
Ying Yang ◽  
Tao Chang
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Oxidation Of Sulfides

Correction for ‘Hydrophilic phase transfer catalyst based on the sulfoacid group and polyoxometalate for the selective oxidation of sulfides in water with hydrogen peroxide’ by Wei Zhao et al., New J. Chem., 2017, DOI: 10.1039/c6nj03218d.

Epoxidation of Cycloolefins with Hydrogen Peroxide in the Presence of Heteropoly Acids Combined with Phase Transfer Catalyst.

ChemInform ◽  
2003 ◽  
Vol 34 (41) ◽  
Author(s):  
M. N. Timofeeva ◽  
Z. P. Pai ◽  
A. G. Tolstikov ◽  
G. N. Kustova ◽  
N. V. Selivanova ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Heteropoly Acids

Polyisobutylene oligomer-bound polyoxometalates as efficient and recyclable catalysts for biphasic oxidations with hydrogen peroxide

2015 ◽  
Vol 5 (2) ◽  
pp. 818-821 ◽  
Author(s):  
Rana Yahya ◽  
Michael Craven ◽  
Elena F. Kozhevnikova ◽  
Alexander Steiner ◽  
Peerada Samunual ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Oxidative Desulfurization ◽  
Biphasic System ◽  
Recyclable Catalysts

Oxidative desulfurization and alkene epoxidation proceed in heptane–water biphasic system through facile phase transfer of POM by amine terminated oligomer.

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