Organosuperbase dendron manganese complex grafted on magnetic nanoparticles; heterogeneous catalyst for green and selective oxidation of ethylbenzene, cyclohexene and oximes by molecular oxygen

Polyhedron ◽  
2019 ◽  
Vol 157 ◽  
pp. 90-106 ◽  
Author(s):  
Ali Reza Faraji ◽  
Fatemeh Ashouri ◽  
Zahra Hekmatian ◽  
Somayyeh Heydari ◽  
Sima Mosazadeh
Keyword(s):  
Magnetic Nanoparticles ◽  
Molecular Oxygen ◽  
Heterogeneous Catalyst ◽  
Selective Oxidation ◽  
Manganese Complex ◽  
Oxidation Of Ethylbenzene

Selective Oxidation of 1,2-Propanediol to Lactic Acid over Different Supported Au, Pt and Pd Catalysts

2019 ◽  
Vol 800 ◽  
pp. 88-92 ◽  
Author(s):  
Svetlana Chornaja ◽  
Svetlana Zhizhkuna ◽  
Jevgenija Vladiko ◽  
Konstantins Dubencovs
Keyword(s):  
Lactic Acid ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Heterogeneous Catalyst ◽  
Selective Oxidation ◽  
Main Product ◽  
Oxidation Process ◽  
Pd Catalysts ◽  
Oxidation With Molecular Oxygen ◽  
By Products

1,2-Propanediol selective oxidation with molecular oxygen in presence of heterogeneous catalyst is one of the most nature friendly 1,2-propanediol conversion methods. This work demonstrates Au, Pt and Pd containing catalysts’ activity and selectivity in a 1,2-propanediol oxidation process. The main product of the 1,2-propanediol catalytic oxidation was lactic acid, by-products were acetic and formic acids. It was found that Au based catalysts are best for 1,2-propanediol oxidation in alkaline water solutions. The best result was achieved using the 4.8wt%Au/Al2O3catalyst: selectivity by lactic acid was 94% with 1,2-propanediol conversion 100% (c0(1,2-propanediol) = 0.3 mol/L, P(O2) = 6 atm, n (1,2-propanediol)/n (Au) = 500, t = 60°C, c0(NaOH) = 1.5 mol/L).

scholarly journals Heteropolytungstostannate as a homo- and heterogeneous catalyst for Knoevenagel condensations, selective oxidation of sulfides and oxidative amination of aldehydes

RSC Advances ◽  
2017 ◽  
Vol 7 (72) ◽  
pp. 45495-45503 ◽  
Author(s):  
Roushan Khoshnavazi ◽  
Leila Bahrami ◽  
Manuchehr Rezaei
Keyword(s):  
Magnetic Nanoparticles ◽  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Selective Oxidation ◽  
Oxidative Amination ◽  
Oxidation Of Sulfides

Heteropolytungstostannate of [P2W18O68(HOSnIVOH)3]12− was grafted on amine levels coated magnetic nanoparticles and used as catalysis in the selective oxidation of sulfides and oxidative amination of aldehydes in an aqueous medium.

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