Tailoring the selectivity of glycerol oxidation by tuning the acid–base properties of Au catalysts

Villa, Alberto; Campisi, Sebastiano; Mohammed, Khaled M. H.; Dimitratos, Nikolaos; Vindigni, Floriana; Manzoli, Maela; Jones, Wilm; Bowker, Michael; Hutchings, Graham J.; Prati, Laura

doi:10.1039/c4cy01246a

Cited by 81 publications

(83 citation statements)

References 27 publications

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“…Kimura et al found that Pt-Bi/C can catalyze the oxidation of glycerol to dihydroxyacetone (DHA) without the addition of base [16], Gallezot et al confirmed that Bi can prevent the over-oxidation of Pt and favor the oxidation of secondary alcohol [17]. Recently, it was reported that H-mordenite supported Au-Pt nanoparticles (NPs) [18,19] and Mg(OH) 2 supported Au-Pt and Au-Pd NPs [20] can catalyze the oxidation of glycerol to free GLYA without the addition of base, and CuO supported Au NPs is active for the selective oxidation of glycerol to DHA without NaOH [21]. At the same time, more recent works found that cuboctahedral Pt NPs [22] and Pt 9 Sn 1 /C [23] are more active for the selective oxidation of glycerol than tetrahedral Pt NPs.…”

Section: Introductionmentioning

confidence: 95%

Selective oxidation of glycerol over nitrogen-doped carbon nanotubes supported platinum catalyst in base-free solution

Zhang

Shi

Sun

et al. 2015

Catalysis Communications

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Section: Introductionmentioning

confidence: 95%

Selective oxidation of glycerol over nitrogen-doped carbon nanotubes supported platinum catalyst in base-free solution

Zhang

Shi

Sun

et al. 2015

Catalysis Communications

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“…Villa et al. investigated the importance of the support, comparing a range of different AuPt supported catalysts . Overall, while basic supports as MgO and NiO promoted the activity but also increased C−C bond cleavage reactions, acidic ones as MCM41 or SiO 2 showed higher selectivity to C3 products.…”

Section: Glycerol Oxidationmentioning

confidence: 99%

Gold Catalysts for the Selective Oxidation of Biomass‐Derived Products

et al. 2018

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Biomass constitutes a renewable source for new chemical platforms. Among other processes the catalytic ones represent a green alternative when active and selective catalysts can be developed. In this paper, applications of gold and gold‐based catalysts have been reviewed in the field of the selective oxidations. Indeed, from the discovery of the peculiarity of gold as catalytic material, the liquid phase oxidations have been differently viewed. Three important biomass‐derived molecules, namely glucose, hydroxymethyl furfural (HMF) and glycerol have been considered as precursors for products of industrial interest where gold catalysts have played an important role. This review starts from the research on monometallic gold catalysts which have been explored initially and then look at gold as modifier of other metal catalyst. This latter field is still in evolution and probably needs to be look at in the future.

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“…However, in previous studies, it was difficult to prepare NPGCs if the isoelectric point of the support was below pH 5. A solid acid, which typically shows a low isoelectric point, is attractive as a support, but there have been only a few reports of Au supported on acidic oxides other than silica and zeolite supports …”

Section: Co Oxidation On Au/nb2o5 Catalysts[a] Prepared By the Dr Metmentioning

confidence: 99%

Deposition of Gold Nanoparticles on Niobium Pentoxide with Different Crystal Structures for Room‐Temperature Carbon Monoxide Oxidation

2016

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Nanoparticulate gold catalysts (NPGCs) supported on niobium oxides (Nb2O5) were prepared by different deposition methods. Au nanoparticles (NPs) with a mean diameter of approximately 5 nm were deposited by conventional deposition methods, which include the deposition‐precipitation (DP) and deposition‐reduction (DR) methods, on layered‐type Nb2O5 that possesses a deformed orthorhombic structure. Moreover, Au NPs with a mean diameter of approximately 2.7 nm could be deposited by the sol immobilization method on several crystalline forms of Nb2O5 (deformed orthorhombic, pseudohexagonal, and orthorhombic). NPGCs deposited on deformed orthorhombic Nb2O5 had a higher catalytic activity for CO oxidation. The temperature for 50 % CO conversion was 11 °C for 1 wt % Au/Nb2O5 (deformed orthorhombic) prepared by the sol immobilization method, and the CO conversion was 91 % at 28 °C. As far as we know, this is the first report of highly active Au NPGCs (smaller than 3 nm in diameter) supported on Nb2O5. NPGCs supported on acidic metal oxides will expand the utilization of gold catalysts for new applications.

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Tailoring the selectivity of glycerol oxidation by tuning the acid–base properties of Au catalysts

Cited by 81 publications

References 27 publications

Selective oxidation of glycerol over nitrogen-doped carbon nanotubes supported platinum catalyst in base-free solution

Selective oxidation of glycerol over nitrogen-doped carbon nanotubes supported platinum catalyst in base-free solution

Gold Catalysts for the Selective Oxidation of Biomass‐Derived Products

Deposition of Gold Nanoparticles on Niobium Pentoxide with Different Crystal Structures for Room‐Temperature Carbon Monoxide Oxidation

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