Search Results - "Gac, Wojciech"

Steam reforming of ethanol over Ni/support catalysts for generation of hydrogen for fuel cell applications by Denis, Andrzej, Grzegorczyk, Wieslaw, Gac, Wojciech, Machocki, Andrzej

“…The paper reports experimental results concerning the influence of the support nature (TiO 2, ZnO, Al 2O 3 and Al 2O 3–Fe 2O 3) of nickel catalysts on their…”
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Methane decomposition over Ni-MgO-Al2O3 catalysts by GAC, Wojciech, DENIS, Andrzej, BOROWIECKI, Tadeusz, KEPINSKI, Leszek

“…Studies of methane decomposition were performed over nickel alumina catalysts modified with magnesia. The catalysts were obtained by the co-precipitation…”
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The Effects of Ce and W Promoters on the Performance of Alumina-Supported Nickel Catalysts in CO2 Methanation Reaction by Wojciech Gac, Witold Zawadzki, Magdalena Greluk, Grzegorz Słowik, Marek Rotko, Marcin Kuśmierz

“…The influence of Ce and W promoters on the performance of alumina-supported nickel catalysts in the CO2 methanation reaction was investigated. The catalysts…”
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Impact of Hydrothermally Prepared Support on the Catalytic Properties of CuCe Oxide for Preferential CO Oxidation Reaction by Christos Papadopoulos, Konstantinos Kappis, Joan Papavasiliou, John Vakros, Aspasia Antonelou, Wojciech Gac, Haibin Li, George Avgouropoulos

“…CuCe mixed oxide is one of the most studied catalytic systems for preferential CO oxidation (CO-PrOx) for the purification of hydrogen-rich gas stream. In this…”
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Study on the effect of atmospheric gases adsorbed in MnFe2O4/MCM-41 nanocomposite on ortho-positronium annihilation by Wiertel, Marek, Surowiec, Zbigniew, Budzyński, Mieczysław, Gac, Wojciech

“…In this paper, results of positron annihilation lifetime spectroscopy (PALS) studies of MnFe /MCM-41 nanocomposites in N and O atmosphere have been presented…”
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The influence of silver on the structural, redox and catalytic properties of the cryptomelane-type manganese oxides in the low-temperature CO oxidation reaction by Gac, Wojciech

“…Cryptomelane-type manganese oxides modified with silver were prepared by the redox precipitation technique. The catalysts were obtained by the direct…”
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Influence of annealing temperature on structural and magnetic properties of MnFe2O4 nanoparticles by Surowiec, Zbigniew, Wiertel, Marek, Gac, Wojciech, Budzyński, Mieczysław

“…Nanoparticles of manganese ferrite were obtained by the impregnation of highly ordered mesoporous MCM-41 silica support. The investigated sample contained 20%…”
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Effects of support composition on the performance of nickel catalysts in CO2 methanation reaction by Gac, Wojciech, Zawadzki, Witold, Rotko, Marek, Greluk, Magdalena, Słowik, Grzegorz, Kolb, Gunther

“…[Display omitted] •Synthesis of nickel catalysts (10–40 wt.%) with Al2O3, ZrO2 and CeO2 as supports.•Support affect catalyst reducibility, Ni crystallite size…”
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Does the active surface area determine the activity of silica supported nickel catalysts in CO2 methanation reaction? by Karpińska-Wlizło, Karolina, Zawadzki, Witold, Słowik, Grzegorz, Gac, Wojciech

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Co/CeO2 and Ni/CeO2 catalysts for ethanol steam reforming: Effect of the cobalt/nickel dispersion on catalysts properties by Greluk, Magdalena, Gac, Wojciech, Rotko, Marek, Słowik, Grzegorz, Turczyniak-Surdacka, Sylwia

“…[Display omitted] •Ethanol dehydrogenation occurs preferentially on cobalt/nickel terrace sites.•The edge/steps sites are preferred reaction sites for C─C bond…”
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Acid–base properties of Ni–MgO–Al2O3 materials by Gac, Wojciech

“…▶ Acid–base-properties of Ni–MgO–Al2O3 systems were related to the Ni/Mg ratio. ▶ The increase of Ni/Mg ratio decreased stability of the hydrotalcite…”
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Catalytic activity of Pt species variously dispersed on hollow ZrO2 spheres in combustion of volatile organic compounds by Kondratowicz, Tomasz, Drozdek, Marek, Michalik, Marek, Gac, Wojciech, Gajewska, Marta, Kuśtrowski, Piotr

“…[Display omitted] •Mesoporous, tetragonal ZrO2 shell is formed by bottom-up strategy.•Hollow ZrO2 sphere is an ideal support for Pt-based active…”
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Effects of dealumination on the performance of Ni-containing BEA catalysts in bioethanol steam reforming by Gac, Wojciech, Greluk, Magdalena, Słowik, Grzegorz, Millot, Yannick, Valentin, Laetitia, Dzwigaj, Stanislaw

“…[Display omitted] •Small nickel crystallites formed on dealuminated BEA support.•Low acidity of dealuminated BEA nickel catalyst.•High initial activity of…”
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Nickel catalysts supported on silica microspheres for CO2 methanation by Gac, Wojciech, Zawadzki, Witold, Słowik, Grzegorz, Sienkiewicz, Andrzej, Kierys, Agnieszka

“…Nickel catalysts supported on silica microspheres were prepared by the application of porous resin beads (Amberlite XAD7HP) as hard template using different…”
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The influence of water vapour on the redox properties of Co-CeO2-ZrO2 catalysts by GAC, Wojciech

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The state of BEA zeolite supported nickel catalysts in CO2 methanation reaction by Gac, Wojciech, Zawadzki, Witold, Słowik, Grzegorz, Kuśmierz, Marcin, Dzwigaj, Stanislaw

“…[Display omitted] •High catalytic performance of Ni catalyst with dealuminated BEA support.•Formation of metallic surface sites evidenced by in-situ XPS and…”
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BEA zeolite supported Ce-promoted nickel catalysts for CO2 methanation by Gac, Wojciech, Zawadzki, Witold, Słowik, Grzegorz, Grudziński, Wojciech, Dzwigaj, Stanislaw

“…Two series of Ce-promoted nickel catalysts were prepared by co-impregnation method using unmodified and dealuminated Beta zeolites as supports, denoted…”
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CO2 Methanation in the Presence of Ce-Promoted Alumina Supported Nickel Catalysts: H2S Deactivation Studies by Gac, Wojciech, Zawadzki, Witold, Rotko, Marek, Słowik, Grzegorz, Greluk, Magdalena

“…The performance of alumina supported unpromoted and cerium promoted nickel catalysts in CO 2 methanation reaction was investigated. It was found that the…”
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Neodymium promoted ceria and alumina supported nickel catalysts for CO2 methanation reaction by Gac, Wojciech, Zawadzki, Witold, Kuśmierz, Marcin, Słowik, Grzegorz, Grudziński, Wojciech

“…[Display omitted] •Synthesis of Nd-promoted ceria and alumina supported nickel catalysts for CO2 methanation.•Weak activity changes of ceria supported nickel…”
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Structural and surface changes of cobalt modified manganese oxide during activation and ethanol steam reforming reaction by Gac, Wojciech, Greluk, Magdalena, Słowik, Grzegorz, Turczyniak-Surdacka, Sylwia

“…[Display omitted] •Formation of cobalt nanoparticles by reduction of tunnel-structured Co-Mn oxides.•Decoration of cobalt nanoparticles with manganese oxide…”
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