High throughput experimentation applied to the combustion of methane and a comparison with conventional micro-reactor measurements

Demoulin, Olivier; Navez, Michaël; Wolf, E.E.; Ruíz, Patricio

doi:10.1016/j.cattod.2004.03.014

Cited by 13 publications

(24 citation statements)

References 11 publications

(15 reference statements)

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“…These species are temperaturesensitive, since they reappeared when temperature was cooled down to 150 8C. Similar results were obtained when 10 vol.% CO 2 were added in the CCM feed [56].…”

Section: Adsorbed Species Under Various Reaction Conditionssupporting

confidence: 85%

“…At 450 (F) and 500 8C (G), CO 2(g) still increases. Similar results were obtained in the case of a pre-reduced catalyst [56]. After the experiment on the pre-reduced catalyst, the sample was cooled down to 350 8C, still under reaction conditions (Fig.…”

Section: O 2 -Rich Reaction Conditions (O 2 /Ch 4 = 4)supporting

confidence: 77%

“…10), which is probably catalyzed by the presence of palladium since their production is much more important on the Pd/g-Al 2 O 3 catalyst than on the g-alumina support, as shown elsewhere [56]. This can be explained by a lowering of the apparent activation energy of formates formation on Pd/g-Al 2 O 3 , which is reported to be fivefold less important on the catalyst than on the raw Al 2 O 3 material, underlying the role of the metal in the formates formation process [69].…”

Section: Comentioning

confidence: 93%

“…8). They account for species adsorbed on the alumina support, since they also appeared when CO 2 was fed to pure alumina, in another study [56]. Based on literature data, the peak at 1650 cm À1 accounts for either hydrogenocarbonates [64,67,70] or carbonates species [60,65,66,68,69], likely in the bidentate configuration [65,60,68].…”

Section: Peaks At 1650 1590 1460 and 1440 CM à1mentioning

confidence: 96%

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Investigation of the behaviour of a Pd/γ-Al2O3 catalyst during methane combustion reaction using in situ DRIFT spectroscopy

Demoulin

Navez

Ruíz

2005

Applied Catalysis A: General

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“…These species are temperaturesensitive, since they reappeared when temperature was cooled down to 150 8C. Similar results were obtained when 10 vol.% CO 2 were added in the CCM feed [56].…”

Section: Adsorbed Species Under Various Reaction Conditionssupporting

confidence: 85%

Section: O 2 -Rich Reaction Conditions (O 2 /Ch 4 = 4)supporting

confidence: 77%

Section: Comentioning

confidence: 93%

Section: Peaks At 1650 1590 1460 and 1440 CM à1mentioning

confidence: 96%

See 2 more Smart Citations

Investigation of the behaviour of a Pd/γ-Al2O3 catalyst during methane combustion reaction using in situ DRIFT spectroscopy

Demoulin

Navez

Ruíz

2005

Applied Catalysis A: General

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“…Micro-reactor and micro miniaturized total analysis systems (µ-TAS) have been studied to investigate reduction in system size, waste solutions, and reagents, and to achieve high reaction rates [1][2][3][4][5][6][7][8][9][10][11][12][13]. This kind of equipment has been developed on silicon, glass, and organic sheets by mask processes, photo lithography and LIGA processes.…”

Section: Introductionmentioning

confidence: 99%

Development of three-electrode type micro-electrochemical reactor on anodized aluminum with photon rupture and electrochemistry

Sakairi

Yamada

Kikuchi

et al. 2007

Electrochimica Acta

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Photon rupture with a focused single pulse of pulsed YAG-laser irradiation was used to fabricate an aluminum electrochemical micro-reactor. Porous type anodic oxide film formed on aluminum specimens was irradiated in solutions with a pulsed Nd-YAG laser beam through a convex lens to fabricate micro channels, micro-electrode, and through holes (for reference electrode, solution inlet, and outlet). During irradiation, specimens were moved by a computer controlled XYZ stage. After irradiation, the surface of the micro-channel and through hole were again treated to form anodic oxide film and the surface of the micro-electrode was treated electrochemically to provide an Au layer. The calculated volume of the micro-reactor including micro-channel and through holes is about 1.5 µl. The cyclic voltammogram of the micro-electrochemical cell was measured in K 3 Fe(CN) 6 / K 4 Fe(CN) 6 with both static and flowing solution at different scanning rates. The anodic and cathodic peak currents were measured and the values depended on scanning rate and ion concentration when the solution was static. With the flowing solution, limiting currents were observed and the anodic limiting current was increased with the cubic root of the solution flow rate.

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Effect of support on the apparent activity of palladium oxide in catalytic methane combustion

2020

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The support effect on the low temperature catalytic oxidation of methane over palladium catalysts was studied by comparing a series of metal oxides as the support. Samples of 0.010 g/g Pd catalysts supported on different grades and/or phases of TiO2, Al2O3, and ZrO2 were prepared via incipient impregnation and their catalytic activity was evaluated using a laboratory plug‐flow reactor. The specific surface area of the supports determined by nitrogen adsorption varied from about 13‐220 m2/g. Initial experiments conducted with titania (anatase) as a support showed a low apparent activity and a poor thermal stability. Focusing on anatase, we have successfully improved its thermal stability by additions of Al2O3 or by doping with CeO2, or La2O3. However, contrary to expectations based on some information in the literature, we have found that the activity decreased in the sequence of Al2O3 > ZrO2 > TiO2, and was not a direct function of specific surface area. This was especially evident in the case of titania. The surface structure of the support and the nature of its interaction with the active component PdO seem to play a far more important role in activity than the apparent specific surface area. Moreover, anatase‐supported catalysts present a very rapid deactivation, whereas rutile‐supported catalysts are relatively stable. The observed phenomena could potentially be related to the interaction between support and the active phase of palladium. Several models have been proposed to describe the strong metal‐support interaction, but either charge transfer or encapsulation seems to be the most probable.

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High throughput experimentation applied to the combustion of methane and a comparison with conventional micro-reactor measurements

Cited by 13 publications

References 11 publications

Investigation of the behaviour of a Pd/γ-Al2O3 catalyst during methane combustion reaction using in situ DRIFT spectroscopy

Investigation of the behaviour of a Pd/γ-Al2O3 catalyst during methane combustion reaction using in situ DRIFT spectroscopy

Development of three-electrode type micro-electrochemical reactor on anodized aluminum with photon rupture and electrochemistry

Effect of support on the apparent activity of palladium oxide in catalytic methane combustion

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