Preferential oxidation of carbon monoxide with iron-promoted platinum catalysts supported on metal foams

Chin, Paul; Sun, Xiaolei; Roberts, George W.; Spivey, James J.

doi:10.1016/j.apcata.2005.11.030

Cited by 63 publications

(34 citation statements)

References 40 publications

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“…54 Furthermore, supported PtFe catalysts could be washcoated on ceramic straight-channel monoliths 111,112 and metal foams. 113,114 Watanabe's group coated Pt−Fe/mordenite catalysts on ceramic straight-channel monoliths and demonstrated that the catalysts could achieve the 10-ppm target level at a low O 2 /CO ratio (O 2 /CO = 1) in a single-stage reactor. In addition, this catalyst exhibited excellent durability, since no deterioration in performance was observed during 500 h of operation.…”

Section: Promoted Pgm Catalysts For the Proxmentioning

confidence: 99%

Recent Advances in Preferential Oxidation of CO Reaction over Platinum Group Metal Catalysts

2012

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Preferential oxidation of CO (PROX) is an important reaction for removing small amounts of CO to a parts-per-million level from the hydrogen-rich stream, which will be ultimately supplied as a fuel to polymer−electrolyte membrane fuel cells. The key to the application of PROX is to develop a highly active and selective catalyst that operates well in a wide temperature window (e.g., 80−180°C) and has good resistance to CO 2 and steam. In the past decades, various catalyst formulations have been developed, among which platinum group metal catalysts, including Pt, Ru, and Irin particular, those modified with promoters such as alkali metals and reducible metal oxideshave received a great deal of attention for their significantly improved catalytic activities in the low-temperature range. In this minireview, the recent advances of the platinum group metal catalysts for the PROX reaction are summarized, including performances of unpromoted and promoted catalysts, reaction mechanisms, and kinetics. In addition, the important roles of hydroxyl groups in the PROX reaction are also discussed.

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Section: Promoted Pgm Catalysts For the Proxmentioning

confidence: 99%

Recent Advances in Preferential Oxidation of CO Reaction over Platinum Group Metal Catalysts

2012

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“…methane inlet concentration (measured in terms of adiabatic temperature rise, 50-150ºC, equivalent to 1800 to 5420 ppm), switching time (50-900 s) and total gas flow rate (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) L/min n.t.p.). Experiments have been carried out in the adiabatic bench-scale unit described in the methodology section.…”

Section: Experimental Studymentioning

confidence: 99%

“…Mass and heat transfer have also been studied by different authors under a wide range of operating conditions [6,[14][15][16][17]. The works regarding reaction studies are scarcer, and mainly focused on catalytic oxidations [18][19][20] and porous media burners [21,22].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

Thompson

Marín

Dı́ez

et al. 2013

Chemical Engineering Journal

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“…They can amongst others be used as catalyst support [1,2], implant material [3], heat exchanger [4], sound absorber [5] and energy/impact absorbers [6,7,8,9,10,11,12,13]. In the future OCMFs may have the potential to partially replace the relatively heavy bulk metals used in crumple zones of cars as low-weight energy absorbers [14].…”

Section: Introductionmentioning

confidence: 99%

“…PtFeAlO, NiTi, Ta) [1,3,16]. This study focuses on those made of aluminium (Al) [6,9,10,11,12,13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Open-cell aluminium foams with graded coatings as passively controllable energy absorbers

et al. 2015

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Compared to most bulk materials, open-cell aluminium (Al) foams (OCAFs) are light-weight and can absorb a significant amount of energy in compression, e.g. during impact. When coated with nickel (Ni), OCAFs can absorb even more energy, making them more appropriate for impacts at higher velocities than uncoated OCAFs. When Ni-coated OCAFs experience low-velocity impact however, the stopping distance during the impact is small compared to that of uncoated OCAFs and hence, deceleration occurs fast. This exposes devices (and possibly human beings) protected by OCAFs to large internal forces leading to internal damage. An OCAF that combines the properties of uncoated and coated OCAFs can absorb energy during both low-velocity and high-velocity impact scenarios. This contribution introduces two of such OCAFs which are created by partially and gradually coating OCAFs. The general mechanics of the two OCAFs are revealed using experimental and numerical observation methods.

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Preferential oxidation of carbon monoxide with iron-promoted platinum catalysts supported on metal foams

Cited by 63 publications

References 40 publications

Recent Advances in Preferential Oxidation of CO Reaction over Platinum Group Metal Catalysts

Recent Advances in Preferential Oxidation of CO Reaction over Platinum Group Metal Catalysts

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

Open-cell aluminium foams with graded coatings as passively controllable energy absorbers

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