Semiconductivity study of ceria-supported nickel related to its methanation catalytic activity

Herrmann, Jean-Marie; Ramaroson, E.; Tempere, J. F.; Guilleux, M. F.

doi:10.1016/s0166-9834(00)80016-0

Cited by 41 publications

(15 citation statements)

References 21 publications

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“…The most promising for methanation reaction was found to be 2 wt % Ni/CeO 2 catalyst [17][18][19]. As shown in the literature [20][21][22][23][24], methanation at the surface of supported Ni catalysts is highly structure-sensitive and is also sensitive to the presence of hydrogen.…”

Section: Experimental Observationmentioning

confidence: 88%

Water–Gas Shift Reaction over Ni/CeO2 Catalysts

et al. 2017

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This paper reports the results of a study of a water-gas shift reaction over nickel-ceria catalysts with different metal loading. Within this study, the overall CO conversion and observed kinetic behavior were investigated over the temperature range of 250-550 • C in different reactor configurations (fixed-bed and microchannel reactors). The quasi-steady state kinetics of the CO water-gas shift reaction was studied for fractions of Ni-containing cerium oxide catalysts in fixed-bed experiments at lab-scale level using a very dilute gas (1% CO + 1.8% H 2 O in He). A set of experiments with a microchannel reactor was performed using the feed composition (CO:H 2 O:H 2 :N 2 = 1:2:2:2), representing a product gas from methane partial oxidation. The results were interpreted using computational models. The kinetic parameters were determined by regression analysis, while mechanistic aspects were considered only briefly. Simulation of the WGS reaction in the microreactor was also carried out by using the COMSOL Multiphysics program.

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Section: Experimental Observationmentioning

confidence: 88%

Water–Gas Shift Reaction over Ni/CeO2 Catalysts

et al. 2017

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“…This carrier leads to strong metal-support interactions with precious metals (SMSI) [9][10][11]. In the case of palladium, we have shown by infrared spectroscopy [12][13] that in reducing atmosphere, electron transfer occurs from ceria to highly dispersed palladium.…”

Section: Introductionmentioning

confidence: 99%

Palladium-ceria catalysts: Metal-support interactions and reactivity of palladium in selective hydrogenation of but-1-yne

Bensalem¹,

Verduraz²

1997

React Kinet Catal Lett

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The influence of palladium-ceria interactions on the reactivity of palladium in but-1-yae hydrogenation has been investigated and compared with previous results obtained on alumina. The main differences from Pd-alnmina catalysts are (i) the enhancement of the turnover frequency ascribed to electron transfer from ceria to Pd, (ii) the diminution of the selectivity to but-l-ene, atm'buted to hydrogen spiUover.

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“…Nickel usually promotes the production of methane at a relatively high temperature via methanation reaction (MTN, CO + 3H 2 ↔ CH 4 + H 2 O) (Herrmann et al, 1989). This is undoubtedly an undesirable reaction against WGS because MTN consumes hydrogen.…”

Section: Characteristics Of the Catalytic Active Filters (Caf)mentioning

confidence: 99%