In situ Fourier transform infrared reflection absorption spectroscopic studies of glucose oxidation on platinum in acid

Bae, In Tae; Xing, Xuekun; Liu, C.C.; Yeager, Ernest

doi:10.1016/0022-0728(90)85043-5

Cited by 70 publications

(30 citation statements)

References 24 publications

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“…In the field of carbohydrate oxidation product adsorption was found to deactivate the catalyst for the oxidation of D-glucose (22) and D-gluconic acid (23) in acidic media. In electrochemical oxidations of alcohols in acidic media, CO from aldehyde intermediates was found to cover active sites (7,24,25), but no CO poisoning was observed for D-glucose oxidation (22). In alkaline media CO is oxidized under reaction conditions (4) and is present in small amounts (26).…”

Section: Introductionmentioning

confidence: 99%

Graphite-Supported Platinum Catalysts: Effects of Gas and Aqueous Phase Treatments

Vleeming

Kuster

Marin

et al. 1997

Journal of Catalysis

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The effects on the platinum particle diameter and the available platinum surface area of a graphite-supported platinum catalyst resulting from pretreatments and from performing a selective oxidation reaction are investigated. In the gas phase considerable catalyst sintering occurs only in the presence of oxygen at 773 K due to extensive carbon burn-off, whereas in an aqueous phase platinum particle growth is limited upon oxidative treatment. A hydrogen treatment in aqueous phase at 363 K causes platinum particle growth, aggregate formation, and covering of metal sites. These phenomena become more important with increasing pH. Platinum particle growth and aggregate formation are attributed to platinum particle rather than platinum adatom mobility and is caused by the destruction of the oxygen-containing surface groups on the graphite support, which serve as anchorage sites for the platinum particles. Site covering is caused by products originating from the graphite support, which are formed as a result of the reductive treatments. When performing the aqueous phase oxidation of methyl α-D-glucopyranoside at 323 K and a pH of 9, catalyst modifications are small under oxidative conditions. Exposure of the catalyst for several hours to methyl α-D-glucopyranoside under the same conditions but in the absence of oxygen causes site covering.

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Section: Introductionmentioning

confidence: 99%

Graphite-Supported Platinum Catalysts: Effects of Gas and Aqueous Phase Treatments

Vleeming

Kuster

Marin

et al. 1997

Journal of Catalysis

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“…Generally, there is no agreement in literature regarding the nature of the poisoning species [79]. Early studies indicated the reaction product gluconic acid [80] to be the poisoning species, whereas later works identified linear CO and bridged CO as adsorbates, depending on the pH [81,82].…”

Section: Factors Affecting Long-term Operationmentioning

confidence: 87%

Abiotic (Nonenzymatic) Implantable Biofuel Cells

Kerzenmacher

2014

Implantable Bioelectronics

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“…The low overpotential oxidation process is of great interest for fuel cell applications. However, platinum surfaces are very sensitive to poisoning with chemisorbed intermediate species [80,81] , resulting in poor reaction kinetics. To enhance oxidation rate, the surface of Pt was modifi ed by heavy atoms such as Tl, Pb, Bi, W [82] .…”

Section: Glucose Oxidationmentioning

confidence: 99%

Tailoring nanostructured catalysts for electrochemical energy conversion systems

Gago¹,

Habrioux

Alonso-Vante

2012

Nanotechnology Reviews

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This review covers topics related to the synthesis of nanoparticles, the anodic and cathodic electrochemical reactions and low temperature electrochemical energy devices. The thermodynamic aspects of nucleation and growth of nanoparticles are discussed. Different methods of chemical synthesis such as w/o microemulsion, B ö nnemann, polyol and carbonyl are presented. How the electrochemical reactions take place on the surface of the catalytic nanoparticles and the importance of the substrate is put in evidence. The use of nanomaterials in low temperature energy devices such as H 2 /O 2 polymer electrolyte or proton exchange membrane fuel cell (PEMFC) and micro-direct methanol fuel cell ( μ DMFC), as well as recent progress and durability, is discussed. Special attention is given to the novel laminar fl ow fuel cell (LFFC). This review starts with the genesis of catalytic nanoparticles, continues with the surface electrochemical reactions that occur on them, and fi nally it discusses their application in electrochemical energy devices such as low temperature fuel cells or Li-air batteries.

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In situ Fourier transform infrared reflection absorption spectroscopic studies of glucose oxidation on platinum in acid

Cited by 70 publications

References 24 publications

Graphite-Supported Platinum Catalysts: Effects of Gas and Aqueous Phase Treatments

Graphite-Supported Platinum Catalysts: Effects of Gas and Aqueous Phase Treatments

Abiotic (Nonenzymatic) Implantable Biofuel Cells

Tailoring nanostructured catalysts for electrochemical energy conversion systems

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