Highly active and stable Rh/MgOAl2O3 catalysts for methane steam reforming

Wang, Y.; Chin, Ya Huei; Rozmiarek, Robert T.; Johnson, Bradley R.; Gao, Yufei; Watson, Jonathan S.; Tonkovich, Annalee Y.; Wiel, D.P. Vander

doi:10.1016/j.cattod.2004.09.011

Cited by 133 publications

(54 citation statements)

References 14 publications

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“…The enhanced heat and mass transfer of novel engineered catalysts may lead to improved efficiency and performance of methane steam reforming. 73 To fully take the heat and mass transfer advantages of microchannel reaction technology so that rapider production of hydrogen and a greater volumetric productivity can be achieved, it is necessary to develop highly active and stable methane steam reforming catalysts. Commercial methane steam reforming catalysts are currently based on nickel supported on refractory materials doped with a variety of promoters.…”

Section: Analysis Of Reaction and Transport Time Scalesmentioning

confidence: 99%

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

et al. 2018

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Methane steam reforming coupled with methane catalytic combustion in microchannel reactors for the production of hydrogen was investigated by means of computational fluid dynamics. Special emphasis is placed on developing general guidelines for the design of integrated micro-chemical systems for the rapid production of hydrogen. Important design issues, specifically heat and mass transfer, catalyst, dimension, and flow arrangement, were explored. The relative importance of different transport phenomena was quantitatively evaluated, and some strategies for intensifying the reforming process were proposed. The results highlighted the importance of process intensification in achieving the rapid production of hydrogen. High heat and mass transfer rates derived from miniaturization of the chemical system are insufficient for process intensification. Improvement of the reforming catalyst is also essential.The efficiency of heat exchange can be improved greatly if the reactor dimension is properly designed.Thermal management is required to improve the reliability of the integrated system. Co-current heat exchange improves the thermal uniformity in the system. The catalyst loading is a key factor determining reactor performance, and must be carefully designed. Finally, engineering maps were constructed to achieve the desired power output, and favorable operating conditions for the rapid production of hydrogen were identified.

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Section: Analysis Of Reaction and Transport Time Scalesmentioning

confidence: 99%

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

et al. 2018

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“…The methane conversion to synthesis gas (mixture of CO and H 2 ) can be realized by different processes like the methane steam reforming (MSR) with H 2 O [1][2][3][4], dry methane reforming with CO 2 [5][6] and methane oxidation with molecular oxygen [7][8]. The most catalysts are usually nickel-based systems because of their thermal stability and low cost [2,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Methane Steam Reforming on Supported Nickel Based Catalysts. Effect of Oxide ZrO2, La2O3 and Nickel Composition

Belhadi¹,

Trari²,

Rabia³

et al. 2013

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The catalytic properties of Ni (4 and 10 wt%) supported on both La 2 O 3 and ZrO 2 were investigated for the methane steam reforming reaction between 475˚C and 700˚C at atmospheric pressure. The catalysts were prepared by the impregnation method and characterized by several techniques (atomic absorption, BET method, X-ray diffraction and TG-TPO). The catalytic activity of Ni/support systems strongly depends on both of the nature and physico-chemical properties of the support. No deactivation was observed in catalytic systems, whatever the reaction temperature indicating high stability of the catalyst.

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“…In microreaction technology, noble metals and particularly Rh are the most commonly used ones due to their high kinetics and low deactivation rates [6,11]. But as these metals are very expensive and most of the time not easily available, in some cases Ni is also being used as a catalyst in microreactors [5,12].…”

Section: Introductionmentioning

confidence: 99%

Ni Catalyst Coating on Fecralloy^® Microchanneled Foils and Testing for Methane Steam Reforming

et al. 2009

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supported) on pretreated Fecralloy® microchanneled foils under controlled milling times and viscosities of the slurries is described. The activity of the prepared coatings is also presented. Four different series of coated foils were prepared: one per each catalyst system, keeping constant the average particle size on 5 lm, and one extra series to study the effect of reducing the average particle size of the MgO-supported catalyst system to 3 lm. For each coating, scanning electron microscopy pictures were taken and specific surface areas and average densities of the catalyst layers were estimated. Finally, each series of coated foils was stacked and tested in a microreactor for the methane steam reforming (MSR) reaction under different conditions.

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Highly active and stable Rh/MgOAl2O3 catalysts for methane steam reforming

Cited by 133 publications

References 14 publications

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

Methane Steam Reforming on Supported Nickel Based Catalysts. Effect of Oxide ZrO<sub>2</sub>, La<sub>2</sub>O<sub>3</sub> and Nickel Composition

Ni Catalyst Coating on Fecralloy^® Microchanneled Foils and Testing for Methane Steam Reforming

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Highly active and stable Rh/MgOAl2O3 catalysts for methane steam reforming

Cited by 133 publications

References 14 publications

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

Methane Steam Reforming on Supported Nickel Based Catalysts. Effect of Oxide ZrO&lt;sub&gt;2&lt;/sub&gt;, La&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; and Nickel Composition

Ni Catalyst Coating on Fecralloy® Microchanneled Foils and Testing for Methane Steam Reforming

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Methane Steam Reforming on Supported Nickel Based Catalysts. Effect of Oxide ZrO<sub>2</sub>, La<sub>2</sub>O<sub>3</sub> and Nickel Composition

Ni Catalyst Coating on Fecralloy^® Microchanneled Foils and Testing for Methane Steam Reforming