One-step incorporation of Pd–Zn catalytic sites into organized mesoporous alumina for use in the oxidative steam reforming of methanol

Moretti, Elisa; Lenarda, Maurizio; Storaro, Loretta; Frattini, Romana; Patrono, P.; Pinzari, F.

doi:10.1016/j.jcis.2006.10.017

Cited by 19 publications

(10 citation statements)

References 44 publications

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“…The CO 2 desorption of the catalysts was studied by temperatureprogrammed desorption of CO 2 . Approximately 100 mg of each sample was pretreated with a stream of air at 400 • C for 30 min (10 • C min −1 and 60 ml min −1 ).…”

Section: Characterization Methodsmentioning

confidence: 99%

“…PEMFC technology promises to be a clean and efficient alternative to combustion of fuels for power generation in stationary and mobile applications [1]. Hydrogen, as PEMFC fuel, can be generated by steam reforming, partial oxidation, or auto-thermal reforming of liquid fuels [2] or natural gas in combination with the water gas shift reaction. However, the anode However, due to the high cost and limited availability the development of new catalytic systems more abundant and less expensive is necessary.…”

Section: Introductionmentioning

confidence: 99%

“…Al-PILC has been employed as support for CuO-CeO 2 catalysts showing a good performance in CO-PROX [39].…”

Section: Introductionmentioning

confidence: 99%

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CuO-CeO2 supported on montmorillonite-derived porous clay heterostructures (PCH) for preferential CO oxidation in H2-rich stream

et al. 2015

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a b s t r a c tThis study reports on the preparation and characterization of porous clay heterostructures (PCH) as a high-surface-area support for CuO-CeO 2 based catalysts for the preferential oxidation of CO in excess of H 2 (CO-PROX). After pillaring the montmorillonite clay with silica (Si-PCH) and silica-zirconia (SiZr-PCH), the Cu-Ce active phase was loaded by incipient wet impregnation setting the cerium amount constant (20 wt%) and investigating three different copper loadings (3, 6 and 12 wt%). The use of pillars of silica or silica-zirconia inserted in the interlayer space of a natural clay provides a high surface area support that can favor the dispersion of both CuO and CeO 2 active phases, leading to the formation of a high amount of copper-ceria interfacial sites, responsible for a very high catalytic activity in the CO-PROX reaction.The results obtained from characterization of the materials by XRD, N 2 physisorption, H 2 -TPR, XPS and CO 2 -TPD suggest that this synthesis method gives rise to catalysts with copper species highly active and selective for the CO-PROX reaction.The catalysts exhibit high CO conversion values and the sample with 6 wt% of copper on Si-PCH displays very good performances, comparable to those based on precious metal catalysts, even at low temperatures.The system reducibility was found modified by the incorporation of zirconium in the support, with a slight decrement of the CO conversion value, compared to the same material without Zr. The influence of the presence of CO 2 and H 2 O in the gas feed was also studied in order to simulate the real operating conditions of a PEMFC feed stream. Correlations between catalytic performances and physicochemical properties of the materials have been made.

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Section: Characterization Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CuO-CeO2 supported on montmorillonite-derived porous clay heterostructures (PCH) for preferential CO oxidation in H2-rich stream

et al. 2015

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“…In previous papers [23][24][25] some of us described the preparation of alumina based multi-component systems with ordered mesoporosity. Following our studies on Ce/Al based catalysts, here we report the synthesis of nanostructured Au/CeO 2 -Al 2 O 3 samples with high surface area, uniform pore size and low metal content (0.9 wt.%).…”

Section: Introductionmentioning

confidence: 99%

Gold stabilized aqueous sols immobilized on mesoporous CeO2–Al2O3 as catalysts for the preferential oxidation of carbon monoxide

Storaro

Lenarda

Moretti

et al. 2010

Journal of Colloid and Interface Science

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“…Nanostructured gamma alumina (γ -Al 2 O 3 ) such as powders, thin films, and porous templates was also an important material due to its compact crystal structure, excellent mechanical strength, and highly thermal and chemical stability. These characteristics make them widely applicable in adsorption and separation technology [1][2][3][4][5], microelectrode and automobile industry [6,7], and especially as catalyst supports [8][9][10][11][12][13]. Many authors researched the catalytic properties of nano-γ -alumina by doped noble metals [14][15][16], whereas the catalytic properties of pure alumina were seldom studied.…”

Section: Introductionmentioning

confidence: 99%

Supercritical preparation of hexagonal γ-alumina nanosheets and its electrocatalytic properties

Chang

et al. 2008

Journal of Colloid and Interface Science

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One-step incorporation of Pd–Zn catalytic sites into organized mesoporous alumina for use in the oxidative steam reforming of methanol

Cited by 19 publications

References 44 publications

CuO-CeO2 supported on montmorillonite-derived porous clay heterostructures (PCH) for preferential CO oxidation in H2-rich stream

CuO-CeO2 supported on montmorillonite-derived porous clay heterostructures (PCH) for preferential CO oxidation in H2-rich stream

Gold stabilized aqueous sols immobilized on mesoporous CeO2–Al2O3 as catalysts for the preferential oxidation of carbon monoxide

Supercritical preparation of hexagonal γ-alumina nanosheets and its electrocatalytic properties

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