Effect of Post‐Treatment on Structure and Catalytic Activity of CuCo‐based Materials for Glycerol Oxidation

Dodekatos, Georgios; Tüysüz, Harun

doi:10.1002/cctc.201601219

Cited by 16 publications

(21 citation statements)

References 102 publications

(42 reference statements)

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“…Hybrid Materials . Little is known on glycerol oxidation in the presence of non‐noble metal catalysts . In another work, we reported lattice incorporated Co catalysts prepared by conventional co‐precipitation and modified sol‐gel methods .…”

Section: Figurementioning

confidence: 99%

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Jin

Fang

Wang

et al. 2018

The Chemical Record

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Conversion of biomass to chemicals provides essential products to human society from renewable resources. In this context, achieving atom‐economical and energy‐efficient conversion with high selectivity towards target products remains a key challenge. Recent developments in nanostructured catalysts address this challenge reporting remarkable performances in shape and morphology dependent catalysis by metals on nano scale in energy and environmental applications. In this review, most recent advances in synthesis of heterogeneous nanomaterials, surface characterization and catalytic performances for hydrogenation and oxidation for biorenewables with plausible mechanism have been discussed. The perspectives obtained from this review paper will provide insights into rational design of active, selective and stable catalytic materials for sustainable production of value‐added chemicals from biomass resources.

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Section: Figurementioning

confidence: 99%

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Jin

Fang

Wang

et al. 2018

The Chemical Record

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“…In addition to nickel, another non-precious catalyst alternative to noble metals for the selective oxidation of alcohols is copper [112]. CuCo [113], Cu/CoO [114,115] and Cu/Al 2 O 3 [116] couples were investigated as nonprecious metal for GOR oxidation. For CuCo-based materials prepared by co-precipitation, CoO(OH) in contact with CuO was identified as the potentially active phase.…”

Section: Non-precious Metal Catalystsmentioning

confidence: 99%

Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Antolini¹

2019

Catalysts

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The low price, highly active triol structure, high volumetric energy density, simple storage and environment-friendly properties make glycerol a promising fuel for an alkaline direct alcohol fuel cell (ADAFC). Unlike other ADAFCs, alkaline direct glycerol fuel cells (ADGFCs) can be used either to generate only energy (the common use of fuel cells) or to produce both energy and valuable chemicals. This work presents an overview of catalysts for glycerol oxidation in alkaline media, and their use in ADGFCs. A particular attention was paid to binary and ternary catalysts able both to increase the selectivity to valuable C3 glycerol oxidation products, reducing the C-C bond cleavage, and simultaneously to enhance glycerol conversion.

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“…74,75 However, since large amounts of glycolic acid are being formed within the first reaction hour, where the carbon mass balance is practically closed, glycolic acid is likely to be formed as a primary reaction product from glycerol via glyceraldehyde or dihydroxyacetone as intermediates, as it was also reported previously. 30,44,76,77 The direct generation of glycolic acid from glycerol as a primary reaction product is also supported by the formation of large quantities of formic acid in the beginning of the reaction, which is a side product of the reaction from glycerol to glycolic acid. After the first hour of the reaction, the selectivity towards glyceric and glycolic acid steadily decreases as a result of their further oxidation towards higher oxidation products (oxalic and formic acid).…”

Section: View Article Onlinementioning

confidence: 99%

“…45,78,79 For example Dumeignil et al reported that alumina supported Ag catalysts also drive the reaction selectivity towards glycolic acid. 30 In order to explore the catalyst durability, three recycling experiments were performed with 5-Cu with a reaction time of 3 h for each cycle.…”

Section: View Article Onlinementioning

confidence: 99%

“…An attractive alternative to noble metals in selective oxidation reactions is copper, which was demonstrated to be active for the selective oxidation of various alcohols and polyols. [37][38][39][40][41] However, there are only few reports on selective oxidation of glycerol in basic media with non-noble metal catalysts, such as with the toxic and carcinogenic cobalt, [42][43][44] layered double hydroxide supported transition metals, [45][46][47] or using hydrogen peroxide instead of molecular oxygen as an oxidizing agent. 48,49 Key factors for the fabrication of efficient supported catalysts are firstly a high dispersion of the active component on the support material; secondly, high surface areas of the support; and thirdly, large porosity to allow efficient diffusion of reactants to the active centers.…”

Section: Introductionmentioning

confidence: 99%

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Selective glycerol oxidation over ordered mesoporous copper aluminum oxide catalysts

Schünemann

Tüysüz

2017

Catal. Sci. Technol.

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Glycerol is a major by-product of the biodiesel production and is therefore produced in high quantities. While currently there are limited possible applications for this highly functionalized molecule, glycerol can be a cheap and abundant feedstock for value-added products that are accessible by selective oxidation.Usually, the selective oxidation of glycerol utilizes expensive noble metal catalysts, such as Au, Pt, and Pd. Here we report the selective oxidation of glycerol in basic media, using ordered mesoporous Cu-Al 2 O 3 catalysts with various Cu loadings prepared by a facile soft-templating method. The materials were characterized in detail by nitrogen physisorption, vis-NIR spectroscopy, EDX, low-and wide-angle XRD, XPS, and TEM. Subsequently the reaction conditions for glycerol oxidation were optimized. The catalytic oxidation of glycerol yields C 3 products, such as glyceric acid and tartronic acid, and also C 2 and C 1 products, such as glycolic acid, oxalic acid, and formic acid. Moreover, the role of the solvent on the catalytic reaction was investigated, and the addition of various co-solvents to the aqueous reaction mixture was found to increase the initial reaction rate up to a factor of three. The trends of the initial reaction rates correlate well with the polarity of the water/co-solvent mixtures. The prepared Cu-Al 2 O 3 catalysts are a more costefficient and environmentally viable alternative to the reported noble metal catalysts.

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Effect of Post‐Treatment on Structure and Catalytic Activity of CuCo‐based Materials for Glycerol Oxidation

Abstract: Supporting informationfor this article, which containsE DX analysis, XRD diffractograms, surface area values, arange of TEM micrographs, elemental analysis, N 2 -physisorption isotherms, and arange catalysis performance data (with carbon mass balance),c an be found under http:// dx

Cited by 16 publications

References 102 publications

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Nanostructured Metal Catalysts for Selective Hydrogenation and Oxidation of Cellulosic Biomass to Chemicals

Glycerol Electro-Oxidation in Alkaline Media and Alkaline Direct Glycerol Fuel Cells

Selective glycerol oxidation over ordered mesoporous copper aluminum oxide catalysts

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