Oxidation of mono- and polyalcohols with gold: Comparison of carbon and ceria supported catalysts

Demirel, Séval; Kern, Paul; Lucas, Martin; Claus, Peter

doi:10.1016/j.cattod.2006.12.002

Cited by 87 publications

(67 citation statements)

References 24 publications

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“…Supported gold catalysts were prepared by standard techniques such as sol-immobilisation (SI), deposition-precipitation (DP), deposition-precipitation with urea (DPU) and impregnation (IP) [36][37][38][39][40][41][42]. The preparation of a 2 wt % Au on TS-1 (titanium silicalite) catalyst based on a method by Mul et al [42] is described here.…”

Section: Catalyst Preparationmentioning

confidence: 99%

Direct Isomerization of Linoleic Acid to Conjugated Linoleic Acids (CLA) using Gold Catalysts

Bauer¹,

Horlacher²,

Claus³

2009

Chem Eng & Technol

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, activated carbon, titanium silicalite TS-1, were prepared and used for the isomerization of linoleic acid (cis-9,cis-12-octadecadienoic acid) to conjugated linoleic acids (CLA) in the presence of hydrogen at 165°C in a batch reactor. The best results were obtained using a catalyst with 2 wt % Au on TS-1, which exhibits a high selectivity (78 %) towards CLA. The two biologically active target CLA isomers, i.e., cis-9,trans-11-CLA and trans-10,cis-12-CLA, were the main products. During the isomerization of linoleic acid to CLA, consecutive reactions also took place. These were the hydrogenation of linoleic acid and CLA to monounsaturated octadecenoic acids and the further hydrogenation of monounsaturated acids to stearic acid. Thus, gold catalysts are capable of isomerizing linoleic acid to CLA and hydrogenating their double bonds to an extent that depends on the Au catalyst used.

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Section: Catalyst Preparationmentioning

confidence: 99%

Direct Isomerization of Linoleic Acid to Conjugated Linoleic Acids (CLA) using Gold Catalysts

Bauer¹,

Horlacher²,

Claus³

2009

Chem Eng & Technol

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“…Extended works were also focused on the use of gold-based catalysts. Indeed, gold, being more resistant to oxidation, much active at low temperature, but operating only in alkaline medium 104) is, at least from a fundamental point of view, a promising metal to realize this reaction. We also recently supported AuPd nanoparticles on a TiO2 support to benefit from the Au activity while suppressing C _ C bond cleavage thanks to the presence of Pd 105) .…”

Section: Glycerol Conversion To Fine Chemicals Inmentioning

confidence: 99%

Biomass-derived Platform Molecules Upgrading through Catalytic Processes: Yielding Chemicals and Fuels

Dumeignil

Capron

Katryniok

et al. 2015

J. Jpn. Petrol. Inst.

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Biomass valorization is a booming field. Especially, the valorization of platform molecules by catalytic processes has driven a large interest in the recent years, and many groups are actively working on the transformation of biosourced substrates to a variety of upgraded chemicals. In this context, in the present paper we put in perspectives the scientific works of our research team. We first classified catalytic transformations of industrial interest according to the number of carbons of the starting material, from C1 to C6. They involve, among others, acid catalysts (e.g., for glycerol dehydration), redox catalysts (e.g., for 5-HMF conversion to diformylfuran), acid and redox catalysts (e.g., for direct acetalization of alcohols), or complex multifunctional catalysts, especially for the Guerbet reaction. Further, we also developed what we called 'toolboxes,' which are general concepts or technologies with a broader field of applications. For example, we adapted the two zones fluidized bed reactor (TZFBR) concept to the single reactor continuous regeneration of coking catalysts. Further, we designed a completely new high throughput platform enabling synthetizing, characterizing and testing the performances of many catalysts for considerably accelerating the catalysts discovery/optimization loop.

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“…The metals used in these studies included Pd, Pt, Au, Pt-Bi, Au-Pd, Au-Pt supported usually on carbonaceous materials (active carbon, charcoal, graphite, carbon nanotubes) [12][13][14][15][16][17][18][19][20][21][22][23] [24][25][26][27], MgAl 2 O 4 -spinels [28] or hydrotalcite [29] have also been employed. A second metal or promoter is added sometimes in order to improve the activity and/or selectivity, to inhibit the over-oxidation or to prevent the deactivation.…”

Section: Introductionmentioning

confidence: 99%

Gel-type ion exchange resin stabilized Pd-Bi nanoparticles for the glycerol oxidation in liquid phase

Vajíček

Štolcová

Kaszonyi

et al. 2016

Journal of Industrial and Engineering Chemistry

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Oxidation of mono- and polyalcohols with gold: Comparison of carbon and ceria supported catalysts

Cited by 87 publications

References 24 publications

Direct Isomerization of Linoleic Acid to Conjugated Linoleic Acids (CLA) using Gold Catalysts

Direct Isomerization of Linoleic Acid to Conjugated Linoleic Acids (CLA) using Gold Catalysts

Biomass-derived Platform Molecules Upgrading through Catalytic Processes: Yielding Chemicals and Fuels

Gel-type ion exchange resin stabilized Pd-Bi nanoparticles for the glycerol oxidation in liquid phase

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