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.

Polyoxometalate-based Gemini ionic catalysts for selective oxidation of benzyl alcohol with hydrogen peroxide in water

2018 ◽  
Vol 8 (17) ◽  
pp. 4463-4473 ◽  
Author(s):  
Pengbo Hao ◽  
Mingjie Zhang ◽  
Wei Zhang ◽  
Zhiyang Tang ◽  
Ni Luo ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Phase Transfer ◽  
Highly Efficient ◽  
Oxidation Of Benzyl Alcohol ◽  
Transfer Capability ◽  
Oxidation Of Alcohols ◽  
Recyclable Catalysts

Polyoxometalate-based Gemini ionic hybrids with inherent phase transfer capability are highly efficient and recyclable catalysts in the selective oxidation of alcohols with H2O2 in water.

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.

Synthesis of phosphomolybdic acid/nanocrystalline titanium silicalite-1 catalyst in the presence of hydrogen peroxide for effective adsorption-oxidative desulfurization

2022 ◽  
Author(s):  
Siyue Wang ◽  
Tong Huan ◽  
Haonan Li ◽  
Xin Shi ◽  
Di Liu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidative Desulfurization ◽  
Phosphomolybdic Acid ◽  
Impregnation Method ◽  
Titanium Silicalite ◽  
Nanocrystalline Titanium

The phosphomolybdic acid (HPMo) supported on microporous nanocrystalline titanium silicalite-1 zeolite (Nano-TS-1) catalysts were prepared in the absence or presence of hydrogen peroxide via the impregnation method. The catalysts were...

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