Hydrogen catalytic combustion over a Pt/Ce0.6Zr0.4O2/MgAl2O4 mesoporous coating monolithic catalyst

Zhang, Cunman; Zhang, Jing; Ma, Jie

doi:10.1016/j.ijhydene.2012.05.073

Cited by 35 publications

(26 citation statements)

References 19 publications

(11 reference statements)

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“…For the implementation of the "hydrogen economy" challenges related to production, transportation, storage and combustion should be met first. Catalytic hydrogen combustion (CHC, reaction (1)) is a key reaction in the "hydrogen economy" which can be employed as a means of heat production (cookers, heaters, etc) as well as for safety purposes [4][5][6][7][8][9][10][11][12][13][14][15][16][17]:…”

Section: Introductionmentioning

confidence: 99%

“…Regarding safety, many papers report the use of CHC for the management of lean and/or explosive mixtures in a wide range of conditions and applications, from the destruction of residual hydrogen in the exhaust of fuel cells to the prevention of destructive explosions in nuclear reactors [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Thinking of a practical application for reaction (1), catalyst should be prepared in supported form, which improves dispersion, prevents aggregation and facilitates it use in successive cycles. Most papers report the use of metal oxides such as SiO2, TiO2, CeO2, SnO2, ZrO2, etc and other ceramics as catalyst support [7,14,17,19]. However, if CHC is thought to be employed for heating purposes, silicon carbide should be considered as a support of election due to its high mechanical strength, chemical inertness and high thermal conductivity to prevent the formation of hot spots [20].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications

Fernández

Arzac

Vogt

et al. 2016

Applied Catalysis B: Environmental

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Highlights• Catalytic hydrogen combustion was studied in a Pt washcoat on SiC foam• The catalyst contains Pt particles of 5-20 nm size on porous Al 2 O 3 with ceria additive • Kinetics was monitored by measuring water concentration through FTIR • The Pt/SiC material shows high thermal stability and reaction start-up at room temperature • Catalyst converted at least 18.5 L H2 .min -1 .g Pt -1 with 35kJ.mol -1 activation energy Abstract A commercial Pt based washcoat, used for catalytic methane combustion, was studied supported on a commercial SiC foam as catalytic material (Pt/SiC) for catalytic hydrogen combustion (CHC). Structural and chemical characterization was performed using Electron Microscopy, X-Ray Diffraction (XRD) and X-Ray Photoelectron Spectroscopy (XPS). The reaction was monitored following water concentration by Fourier Transform Infrared spectra (FTIR). The FTIR method was compared with H2 detection by Gas Cromatography (GC) and has shown to be adequate to study the kinetics of the CHC reaction in steady state under our experimental conditions (very lean 1% (v/v) H2/air mixtures). The catalyst is composed of 5-20 nm disperse Pt nanoparticles decorating a mixture of high surface area Al2O3 and small amounts of ceria supported on the SiC foam which also contains alumina as binder. The Pt/SiC catalytic material has demonstrated to be active enough to start up the reaction in a few seconds at room temperature. The material has been able to convert at least 18.5Lhydrogen.min -1 .gPt -1 at room temperature in conditions of excess of catalyst. The Pt/SiC material was studied after use using XPS and no significant changes on Pt oxidation states were found. The material was characterized from a kinetic point of view. From the conversion-temperature plot a T50 (temperature for 50% conversion) of 34 o C was obtained. Activation energy measured in our conditions was 35±1 kJ.mol -1 .

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications

Fernández

Arzac

Vogt

et al. 2016

Applied Catalysis B: Environmental

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show abstract

“…Common catalysts used include Pt, Pd, Ni, and Co, usually dispersed in metal oxide supports, for example, Al 2 O 3 , SiO 2 , ZrO 2 , and TiO 2 . In a more recent study, a mesoporous ceramic coating monolithic Pt-based catalyst (Pt/Ce 0.6 Zr 0.4 O 2 /MgAl 2 O 4 /cordierite) was prepared from inorganic salt and alkali and used for catalytic hydrogen combustion study [13]. The supports help to disperse the metal catalysts and enhance surface area, while in some cases, play a more active role by functioning as catalysts themselves.…”

Section: Catalytic Combustionmentioning

confidence: 99%

Hydrogen Utilization: Combustion

2014

Hydrogen Generation, Storage, and Utilization

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“…Zhang et al prepared a monolithic Pt-based catalyst with a mesoporous ceramic coating for used in the CCR of lean H 2 [14]. The Pt/Ce 0.6 Zr 0.4 O 2 /MgAl 2 O 4 catalyst showed excellent catalytic activity for H 2 combustion.…”

Section: Introductionmentioning

confidence: 99%

Catalytic combustion of the retentate gas from a CO2/H2 separation membrane reactor for further CO2 enrichment and energy recovery

Hwang

Park

Lee

et al. 2015

Energy

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Hydrogen catalytic combustion over a Pt/Ce0.6Zr0.4O2/MgAl2O4 mesoporous coating monolithic catalyst

Cited by 35 publications

References 19 publications

Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications

Investigation of a Pt containing washcoat on SiC foam for hydrogen combustion applications

Hydrogen Utilization: Combustion

Catalytic combustion of the retentate gas from a CO2/H2 separation membrane reactor for further CO2 enrichment and energy recovery

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