Platinum nanoparticles supported on N-doped carbon nanotubes for the selective oxidation of glycerol to glyceric acid in a base-free aqueous solution

Pt/N-CNT out-performed Pt/CNT for glycerol oxidation with molecular oxygen under atmospheric pressure in a base-free aqueous solution, in terms of glycerol conversion and glyceric acid selectivity.

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Preparation of platinum nanoparticles on polyaniline-coat multi-walled carbon nanotubes for adsorptive stripping voltammetric determination of formaldehyde in aqueous solution

Journal of Applied Electrochemistry ◽

10.1007/s10800-009-9896-0 ◽

2009 ◽

Vol 39 (10) ◽

pp. 1889-1895 ◽

Cited By ~ 23

Author(s):

Guan-Ping Jin ◽

Juan Li ◽

Xia Peng

Keyword(s):

Carbon Nanotubes ◽

Aqueous Solution ◽

Platinum Nanoparticles ◽

Voltammetric Determination ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Selective Oxidation of Glycerol Using 3% H2O2 Catalyzed by Supported Nano-Au Catalysts

Catalysts ◽

10.3390/catal8110505 ◽

2018 ◽

Vol 8 (11) ◽

pp. 505 ◽

Cited By ~ 3

Author(s):

Xiaoli Wang ◽

Gongde Wu ◽

Tongfa Jin ◽

Jie Xu ◽

Shihao Song

Keyword(s):

Transition Metal ◽

Metal Oxides ◽

Selective Oxidation ◽

Mixed Oxide ◽

Transition Metal Oxides ◽

Mixed Oxides ◽

Catalytic Performance ◽

Glyceric Acid ◽

Glycerol Conversion ◽

Composition And Structure

A series of transition metal oxides or mixed oxides supported nano-Au catalysts were prepared for the selective oxidation of glycerol to glyceric acid using 3% H2O2. It was found that the composition and structure of supports significantly influenced the catalytic performance of catalysts. The mesoporous trimetal mixed oxide (CuNiAlO) supported nano-Au catalysts were more active in comparison with the others. In the present catalytic system, the highest glycerol conversion was 90.5%, while the selectivity of glyceric acid could reach 72%. Moreover, the catalytic performance remained after 11 times of reaction.

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Au/activated-carbon catalysts for selective oxidation of alcohols with molecular oxygen under atmospheric pressure: Role of basicity

Catalysis Communications ◽

10.1016/j.catcom.2008.05.041 ◽

2008 ◽

Vol 9 (14) ◽

pp. 2395-2397 ◽

Cited By ~ 67

Author(s):

Junjiang Zhu ◽

José L. Figueiredo ◽

Joaquim L. Faria

Keyword(s):

Activated Carbon ◽

Molecular Oxygen ◽

Selective Oxidation ◽

Atmospheric Pressure ◽

Oxidation Of Alcohols ◽

Carbon Catalysts

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Au Supported TiO2-Nanofibers as Novel Catalysts for Glycerol Oxidation

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.762.294 ◽

2018 ◽

Vol 762 ◽

pp. 294-299 ◽

Cited By ~ 3

Author(s):

Svetlana Chornaja ◽

Reinis Drunka ◽

Konstantins Dubencovs ◽

Svetlana Zhizhkuna ◽

Dzidra Jankovica ◽

...

Keyword(s):

Synthesis Method ◽

Chemical Deposition ◽

Molar Ratio ◽

Glyceric Acid ◽

Glycerol Oxidation ◽

Glycerol Water ◽

Glycerol Conversion ◽

Catalytically Active ◽

Chemical Deposition Method ◽

By Products

Composites of Au supported on the TiO2-nanofibers (Au/NF-TiO2) were synthesized and tested in glycerol oxidation processes. TiO2-nanofibers were prepared by a microwave-assisted hydrothermal synthesis method. Chemical deposition method was used for nanofibers modification with Au nanoparticles. Oxidation of aqueous glycerol solutions by molecular oxygen in the presence of Au/NF-TiO2 nanocomposites was performed. It was found that Au/NF-TiO2 composites are catalytically active in alkaline glycerol water solutions. The main product of glycerol catalytic oxidation was glyceric acid, by-products were – tartronic, lactic, glycolic, oxalic, acetic and formic acid. It was shown that Au/NF-TiO2 catalysts’ activity and selectivity depend on Au weight loading, glycerol/Au molar ratio, oxygen pressure and NaOH initial concentration. The best result was achieved using the 0.5 wt%Au/NF-TiO2 catalyst: selectivity by glyceric acid was 76% with glycerol conversion 100%.

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.800.88 ◽

2019 ◽

Vol 800 ◽

pp. 88-92 ◽

Cited By ~ 3

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).

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Selective glycerol oxidation using platinum nanoparticles supported on multi-walled carbon nanotubes and nitrogen-doped graphene hybrid

Chinese Journal of Catalysis ◽

10.1016/s1872-2067(17)62761-x ◽

2017 ◽

Vol 38 (3) ◽

pp. 537-544 ◽

Cited By ~ 10

Author(s):

Mengyuan Zhang ◽

Yanyan Sun ◽

Juanjuan Shi ◽

Wensheng Ning ◽

Zhaoyin Hou

Keyword(s):

Carbon Nanotubes ◽

Platinum Nanoparticles ◽

Glycerol Oxidation ◽

Nitrogen Doped ◽

Nitrogen Doped Graphene ◽

Doped Graphene ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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NiO and CoOx Promoted Pt Catalysts for Glycerol Oxidation

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.721.76 ◽

2016 ◽

Vol 721 ◽

pp. 76-81

Author(s):

Svetlana Chornaja ◽

Elina Sile ◽

Konstantins Dubencovs ◽

Harijs Bariss ◽

Svetlana Zhizhkuna ◽

...

Keyword(s):

Oxygen Partial Pressure ◽

Partial Pressure ◽

Calcination Temperature ◽

Molar Ratio ◽

Glyceric Acid ◽

Glycerol Oxidation ◽

Pt Catalysts ◽

Glycerol Conversion ◽

Initial Concentration ◽

Oxidation Processes

Two kinds of Pt/CeO2 catalysts supplemented with NiO or CoOx additives were synthesized by extractive-pyrolytic method and tested in glycerol oxidation processes. It was found that only NiO additive promotes Pt/CeO2 catalysts activity and selectivity to glyceric acid. NiO promoted Pt catalysts activity depends on NiO composites’ calcination temperature, oxygen partial pressure, initial NaOH concentration, as well as temperature. Glycerol conversion increases along with increased oxygen partial pressure from1 to 6 atm and along with decreased glycerol/Pt molar ratio from 5000 to 300. It was found that presence of base is significant in the glycerol oxidation processes over NiO promoted Pt/CeO2 catalysts, and optional NaOH initial concentration is 0.6 mol/L. The best yield of glyceric acid (68%) was reached in the presence of 4.8wt%Pt/5wt%NiO/CeO2 (300 °C) catalyst, when temperature was elevated up to 70 °C.

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