Selective Oxidation of Glycerol by Highly Active Bimetallic Catalysts at Ambient Temperature under Base‐Free Conditions

Brett, Gemma Louise; He, Qian; Hammond, Ceri; Miedziak, Peter J.; Dimitratos, Nikolaos; Sankar, Meenakshisundaram; Herzing, Andrew A.; Conte, Marco; López-Sánchez, José Antonio; Kiely, Christopher J.; Knight, David W.; Taylor, Stuart H.; Hutchings, Graham J.

doi:10.1002/ange.201101772

Cited by 69 publications

(46 citation statements)

References 20 publications

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“…The use of biorenewable feedstocks to produce commodity chemicals and clean fuels as a substitute for the limited fossil fuel reserves is an essential pathway to sustainable development [1,2]. In this context, the biodiesel industry was booming in the past decades.…”

Section: Introductionmentioning

confidence: 99%

Base-Free Selective Oxidation of Glycerol over LDH Hosted Transition Metal Complexes Using 3% H2O2 as Oxidant

Wang

Shang

et al. 2016

Catalysts

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A series of transition metal sulphonato-Schiff base complexes were intercalated into Mg-Al layered-double hydroxides (LDHs). The obtained catalysts were characterized by FTIR, XRD, N 2 sorption, SEM and elemental analysis, and then were used in the selective oxidation of glycerol (GLY) using 3% H 2 O 2 as an oxidant. It was found that their catalytic performances were closely related to the loading of active complexes, the Schiff base ligands and the metal centers of the catalysts, as well as the reaction conditions. The optimal conversion of GLY was 85.0%, while the selectivity of 1,3-dihydroxyacetone (DHA) was 56.5%. Moreover, the catalysts could be reused at least 10 times.

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Section: Introductionmentioning

confidence: 99%

Base-Free Selective Oxidation of Glycerol over LDH Hosted Transition Metal Complexes Using 3% H2O2 as Oxidant

Wang

Shang

et al. 2016

Catalysts

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“…[7][8][9] and metallic oxides (TiO 2 , Al 2 O 3 , CeO 2 , CuO, MgO, MgAl 2 O 4 , etc.) [7,[10][11][12][13][14][15][16] have been widely investigated as supports in previous studies. It has been found that the activity and product distribution are closely related to the support, especially the textural and chemical properties, and the acid-base property of the reaction medium; however, the main product was generally glyceric acid on mono-Pt and Au supported catalysts.…”

Section: Introductionmentioning

confidence: 81%

Promoting Role of Bismuth on Hydrotalcite-Supported Platinum Catalysts in Aqueous Phase Oxidation of Glycerol to Dihydroxyacetone

Xue

Wang

et al. 2018

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Abstract:Bismuth plays important roles in promoting the oxidation of alcohols towards high-valueadded chemicals over a noble metal loading catalyst. Herein, Mg-Al hydrotalcite-supported platinum-bismuth nanoparticles (Pt-Bi/HT) were prepared by the co-impregnation method and used in the selective oxidation of glycerol towards dihydroxyacetone (DHA). The incorporation of Bi species into Pt/HT significantly enhances the conversion of glycerol and the selectivity of DHA. The high selectivity of DHA with 80.6% could be achieved at 25.1% conversion of glycerol. The Bi species of the Pt-Bi/HT catalyst mainly exist in the form of BiOCl and Bi metal, which is different from the previous Pt-Bi based catalyst, confirmed by a combination of powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HR-TEM). A plausible mechanism is proposed to elucidate the promoting role of Bi species on the Pt/HT catalyst in the selective oxidation of glycerol towards DHA.

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“…A key challenge in the case of upgrading glycerol is the avoidance of alkaline conditions (without the use of NaOH as base), where the desired product will be the free carboxylic acid instead of the salt of acid. In our studies, Au-Pt nanoparticles were synthesised at various Au-Pt atomic ratios, and were subsequently immobilised on MgO [33]. By performing the aerobic oxidation of glycerol at mild conditions (3 bar of O 2 , 40-60°C) and without base, the efficient transformation of glycerol to glyceric acid was achieved at a selectivity of 80 % and conversion levels of 43 % (Fig.…”

Section: Case I Selective Oxidation Of Alcohols and Polyolsmentioning

confidence: 99%

Catalysis using colloidal-supported gold-based nanoparticles

et al. 2014

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The discovery of novel materials that can be active, selective and stable catalysts for the efficient transformation of organic molecules to useful products is of high importance. In recent years, there has been significant interest in the utilisation of supported gold-based nanoparticles that can be effective catalysts for a broad range of chemical processes. In this paper, we describe and discuss the utilisation of gold-based nanoparticles as efficient catalysts for a range of important reactions, with particular emphasis placed on our team recent research.

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Selective Oxidation of Glycerol by Highly Active Bimetallic Catalysts at Ambient Temperature under Base‐Free Conditions

Abstract: Legierte Au‐Pt‐Nanopartikel auf einem Mg(OH)2‐Träger (siehe STEM‐HAADF‐Bild) zeigen hohe Aktivitäten in der selektiven Oxidation von Polyolen mit molekularem Sauerstoff als Oxidationsmittel unter milden Reaktionsbedingungen und ohne Zusatz von Base.

Cited by 69 publications

References 20 publications

Base-Free Selective Oxidation of Glycerol over LDH Hosted Transition Metal Complexes Using 3% H2O2 as Oxidant

Base-Free Selective Oxidation of Glycerol over LDH Hosted Transition Metal Complexes Using 3% H2O2 as Oxidant

Promoting Role of Bismuth on Hydrotalcite-Supported Platinum Catalysts in Aqueous Phase Oxidation of Glycerol to Dihydroxyacetone

Catalysis using colloidal-supported gold-based nanoparticles

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