Low temperature oxidation of methane over Pd catalyst supported on metal oxides

Sekizawa, Keita; Widjaja, Hardiyanto; Maeda, Shingo; Ozawa, Yasushi; Eguchi, Koichi

doi:10.1016/s0920-5861(00)00273-x

Cited by 126 publications

(69 citation statements)

References 13 publications

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“…Pt and Pd supported on SnO2 were investigated as catalyst systems for various chemical reactions, such as the low temperature oxidation of CO and methane [67], the reduction of NOxs [68], and the electro-oxidation of alcoholic fuels [69,70]. Indeed, pure tin dioxide is a wide band gap semiconductor with electrical conductivity varying from 0.1 to 10 −6 S/cm.…”

Section: Tin Oxidementioning

confidence: 99%

Advances in Ceramic Supports for Polymer Electrolyte Fuel Cells

Lori

Elbaz

2015

Catalysts

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Durability of catalyst supports is a technical barrier for both stationary and transportation applications of polymer-electrolyte-membrane fuel cells. New classes of non-carbon-based materials were developed in order to overcome the current limitations of the state-of-the-art carbon supports. Some of these materials are designed and tested to exceed the US DOE lifetime goals of 5000 or 40,000 hrs for transportation and stationary applications, respectively. In addition to their increased durability, the interactions between some new support materials and metal catalysts such as Pt result in increased catalyst activity. In this review, we will cover the latest studies conducted with ceramic supports based on carbides, oxides, nitrides, borides, and some composite materials.

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Section: Tin Oxidementioning

confidence: 99%

Advances in Ceramic Supports for Polymer Electrolyte Fuel Cells

Lori

Elbaz

2015

Catalysts

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“…To date, SnO 2 is the most widely used oxide as the base material for semiconductor gas sensors ͑SGS͒. 11,12 Further, it is also well known that the introduction of noble metals, such as platinum and palladium, improves SGS selectivity and decreases device operating temperatures, 13,14 However, gas sensor selectivity and stability are two main problems to be solved. The electrical properties of semiconductors are influenced not only by the interaction with the target gas, but also by many gas molecules having similar physicochemical properties.…”

Section: Fanglin Chen and Meilin Liumentioning

confidence: 99%

Distributions of noble metal Pd and Pt in mesoporous silica

Arbiol

Cabot

Morante

et al. 2002

Applied Physics Letters

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Mesoporous silica nanostructures have been synthesized and loaded with Pd and Pt catalytic noble metals. It is found that Pd forms small nanoclusters (3–5 nm) on the surface of the mesoporous structure whereas Pt impregnation results in the inclusion of Pt nanostructures within the silica hexagonal pores (from nanoclusters to nanowires). It is observed that these materials have high catalytic properties for CO–CH4 combustion, even in a thick film form. In particular, results indicate that the Pt and Pd dispersed in mesoporous silica are catalytically active as a selective filter for gas sensors.

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“…10,11 The role of the support has been widely studied in the literature 7,[12][13][14][15][16][17] and it has been concluded that the catalytic properties of palladium depend on the nature of the support, which influences palladium-support interaction. Among the various supports used, alumina and zirconia have been the most studied.…”

Section: Introductionmentioning

confidence: 99%

Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports

Domingos¹,

Rodrigues²,

Brandão³

et al. 2012

Quím. Nova

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Recebido em 4/8/11; aceito em 6/2/12; publicado na web em 15/5/12Palladium catalysts supported on alumina and zirconia were prepared by the impregnation method and calcined at 600 and 1000 °C. Catalysts were characterized by BET measurements, XRD, XPS, O 2 -TPD and tested in methane combustion through temperature programmed surface reaction. Alumina supported catalysts were slightly more active than zirconia supported catalysts, but after initial heat treatment at 1000 °C, zirconia supported palladium catalyst showed better performance above 500 °C A pattern between temperature interval stability of PdOx species and activity was observed, where better PdOx stability was associated with more active catalysts.

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Low temperature oxidation of methane over Pd catalyst supported on metal oxides

Cited by 126 publications

References 13 publications

Advances in Ceramic Supports for Polymer Electrolyte Fuel Cells

Advances in Ceramic Supports for Polymer Electrolyte Fuel Cells

Distributions of noble metal Pd and Pt in mesoporous silica

Palladium-supported catalysts in methane combustion: comparison of alumina and zirconia supports

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