Catalytic properties of plate-type copper-based catalysts, for steam reforming of methanol, on an aluminum plate prepared by electroless plating

Fukuhara, Choji; Ohkura, Hiromichi; Kamata, Yoshiyuki; Murakami, Yuji; Igarashi, Akira

doi:10.1016/j.apcata.2004.06.034

Cited by 50 publications

(29 citation statements)

References 26 publications

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“…SiO 2 and Al 2 O 3 [8,9], the materials MCM-41, carbon black, honeycomb of ceramics can be utilized as efficient supports [10][11][12]. Recently, carbon nanotubes (CNTs) were also applied as the support of catalysts due to their special structural morphology and characteristics [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Catalyst Ni–Cu/CNTs by Chemical Reduction with Formaldehyde for Steam Reforming of Methanol

Liao

Yang

2007

Catal Lett

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The novel catalyst Ni-Cu alloys supported on carbon nanotubes (CNTs) was prepared by reduction with formaldehyde and applied in steam reforming of methanol. With nitric acid and sulfuric acid to create defects on the surface of CNTs and using ethanol to improve the hydrophilicity of CNTs, the Ni-Cu alloys were anchored on the surface of CNTs by co-reduction of Ni-and Cu-precursors under the use of tetra-n-methylammonium hydroxide to reduce the aggregation of Ni-Cu particles. In contrast, Ni-Cu catalyst supported on activated carbon (Ni-Cu/C) was prepared as well, and the bimetal of Ni and Cu supported on CNTs (Ni/Cu/CNTs) was attained by successive reduction of first Cu-and then Ni-precursors. The catalysts were characterized with XRD, ED, FESEM, transmission electron microscopy, and Thermogravimetric analysis. The hydrogen yield in steam reforming of methanol was near 100% at 360°C over 20 wt.% Ni 20 -Cu 80 /CNTs. The catalytic activity of Ni 20 -Cu 80 /CNTs is much higher than that of Ni 20 -Cu 80 /C and Ni 20 /Cu 80 /CNTs.

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Section: Introductionmentioning

confidence: 99%

Preparation of Catalyst Ni–Cu/CNTs by Chemical Reduction with Formaldehyde for Steam Reforming of Methanol

Liao

Yang

2007

Catal Lett

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“…The prepared catalysts were reduced by hydrogen and/or oxidized by air prior to the reaction (details shown in [30,31]). …”

Section: Copper-based Catalystmentioning

confidence: 99%

“…A copper-based structured catalyst was prepared onto an aluminum plate by the electroless plating, which consisted of a displacement plating of zinc, an intermediate plating of metal (iron, nickel, cobalt, tin, respectively), and a chemical plating of copper [30][31][32]34]. The aluminum plate (JIS A1100P-H24, apparent total surface area: 330 cm 2 , thickness: 0.4 mm) was formed into a pentagonal prism shape (21 9 120 mm).…”

Section: Copper-based Catalystmentioning

confidence: 99%

“…The authors have applied an electroless plating technique to the preparation of the structured catalyst for the wall-type reaction system so far, and have prepared various kinds of plate-type catalysts [14,[25][26][27][28][29][30][31][32][33][34]. Especially, the plate-type catalyst for loading in the wall-type reforming system for the hydrogen production has been targeted.…”

Section: Introductionmentioning

confidence: 99%

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Structured Catalysts Prepared by Electroless Plating Technique onto a Metal Substrate, for a Wall-Type Hydrogen Production System

Fukuhara

Igarashi

2012

Catal Surv Asia

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This article reviews our works on the structured catalysts for a wall-type hydrogen production system including methanol steam reforming (MSR), CO shift reaction (CO SR) and methanol decomposition (MD). The structured catalysts were copper-based, palladium-based and nickel-based catalysts. Such a series of structured catalysts were prepared by the electroless plating technique that is a novel method for preparing a structured type catalyst onto a metal-substrate. The copper-based catalyst exhibited high performance for MSR and CO SR, the palladium-based catalyst high for MSR, and the nickelbased catalyst high for MD. The catalytic properties of these catalysts were affected by the difference of the plating condition and the pretreatment condition prior to the reaction. In the copper-based catalyst, the reforming and shift activities were enhanced by the oxidation treatment. One of the factors of such activity enhancement by the oxidation was thought to be in close proximity existence of copper and zinc atoms. A lot of monodentate-type formate species having high reactivity was formed on the oxidized catalyst, which would be correlated to the activity enhancement. In the palladium-based catalyst, the reforming activity was improved by the continuous reduction treatment followed by the oxidation. Such continuous pretreatment formed the PdZn alloy species thought to be a reforming site in the surface layer. The decomposition performance of the nickel-based catalyst depended on the ratio of the crystallite size of nickel particles to that of aluminum particles. The electronic influence of zinc and phosphorous components incorporated in the plated layer contributed to the improvement of the selectivity of product.

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“…This can be met by the combustion of the fuel cell anode off gas (AOG) in a fuel cell system. Currently, increasing attention is being paid to the low temperature steam reforming of methanol to produce hydrogen as the fuel in fuel cells [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Modeling of a compact plate-fin reformer for methanol steam reforming in fuel cell systems

Pan

Wang

2005

Chemical Engineering Journal

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Catalytic properties of plate-type copper-based catalysts, for steam reforming of methanol, on an aluminum plate prepared by electroless plating

Cited by 50 publications

References 26 publications

Preparation of Catalyst Ni–Cu/CNTs by Chemical Reduction with Formaldehyde for Steam Reforming of Methanol

Preparation of Catalyst Ni–Cu/CNTs by Chemical Reduction with Formaldehyde for Steam Reforming of Methanol

Structured Catalysts Prepared by Electroless Plating Technique onto a Metal Substrate, for a Wall-Type Hydrogen Production System

Modeling of a compact plate-fin reformer for methanol steam reforming in fuel cell systems

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