Monika Motak

AGH University of Krakow

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Patrick Da Costa

Sorbonne Université

Teresa Grzybek

AGH University of Krakow

Bogdan Samojeden

AGH University of Krakow

María Elena Gálvez

Institut Jean Le Rond d'Alembert

Radosław Dębek

Centre National de la Recherche Scientifique

Agnieszka Szymaszek

AGH University of Krakow

KŚ

Katarzyna Świrk Da Costa

Norwegian University of Science and Technology

Dominik Wierzbicki

Brookhaven National Laboratory

Paulina Summa

Fritz Haber Institute of the Max Planck Society

Magnus Ro̷nning

Norwegian University of Science and Technology

Cooperative Institutions

AGH University of Krakow

Centre National de la Recherche Scientifique

Sorbonne Université

Jagiellonian University

Institut Jean Le Rond d'Alembert

Warsaw University of Life Sciences

Państwowa Wyższa Szkoła Zawodowa w Ciechanowie

SGH Warsaw School of Economics

Eko-Energia (Poland)

University of Lisbon

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Deactivation of V2O5−WO3/TiO2 DeNOx Catalyst under Commercial Conditions in Power Production Plant

Energies (2020)

Maciej Żyrkowski Monika Motak Bogdan Samojeden Krzysztof Szczepanek

Nitrogen dioxide is one of the most dangerous air pollutants, because its high concentration in air can be directly harmful to human health. It is also responsible for photochemical smog and acid rains. One of the most commonly used techniques to tackle this problem in large combustion plants is selective catalytic reduction (SCR). Commercial SCR installations are often equipped with a V2O5−WO3/TiO2 catalyst. In power plants which utilize a solid fuel boiler, catalysts are exposed to unfavorable conditions. In the paper, factors responsible for deactivation of such a catalyst are comprehensively reviewed where different types of deactivation mechanism, like mechanical, chemical or thermal mechanisms, are separately described. The paper presents the impact of sulfur trioxide and ammonia slip on the catalyst deactivation as well as the problem of ammonium bisulfate formation. The latter is one of the crucial factors influencing the loss of catalytic activity. The majority of issues with fast catalyst deactivation occur when the catalyst work in off-design conditions, in particular in too high or too low temperatures.

Selective catalytic reduction

Nitrogen oxides

Sulfur trioxide

10.3390/en13236200

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Citations (11)

Preparation and texture of mineral-carbonaceous sorbents

Polish Journal of Chemistry (1998)

Teresa Grzybek Andrzej Krzyżanowski Monika Motak M. Żyła

Texture (cosmology)

Source

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Citations (4)

Operando FT-IR study on basicity improvement of Ni(Mg, Al)O hydrotalcite-derived catalysts promoted by glow plasma discharge

Plasma Science and Technology (2018)

Radosław Dębek Dominik Wierzbicki Monika Motak María Elena Gálvez Patrick Da Costa

CO2 adsorption on the surface of hydrotalcite-derived mixed oxide catalysts was investigated under low pressure glow discharge plasma in operando conditions via FT-IR spectroscopy. Nickel catalysts were promoted with various transition metal species (Ce, Fe, La, Zr) to influence their physico-chemical properties. Fe and Zr species were successfully incorporated into hydrotalcite brucite layers. After calcination formed a single phase with Ni(Mg, Al)O mixed oxide, while La and Ce species formed separate phases. This had a consequence in the distribution of surface basic sites as well as in the affinity to CO produced upon CO2 dissociation in plasma. Plasma treatment activated the surface of prepared materials and changed their properties via the generation of strong basic sites associated with low coordinated surface oxygen anions. Moreover, the CO2 adsorption capacity of prepared materials increased after plasma treatment.

Hydrotalcite

Brucite

Glow discharge

Nickel oxide

Non-blocking I/O

10.1088/2058-6272/aaf759

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Citations (16)

The structure of prospective denox catalysts based on carbon–montmorillonite nanocomposites

Catalysis Today (2004)

Teresa Grzybek Monika Motak H. Papp

Carbon fibers

10.1016/j.cattod.2004.04.010

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Citations (7)

Ni/zeolite X derived from fly ash as catalysts for CO2 methanation

Fuel (2020)

Natalia Czuma Katarzyna Zarębska Monika Motak María Elena Gálvez Patrick Da Costa

Methanation

Atmospheric temperature range

Limiting

10.1016/j.fuel.2020.117139

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Citations (79)

Novel Ni-La-hydrotalcite derived catalysts for CO2 methanation

Catalysis Communications (2016)

Dominik Wierzbicki Radosław Dębek Monika Motak Teresa Grzybek María Elena Gálvez

Hydrotalcite

Methanation

Lanthanum

Periclase

10.1016/j.catcom.2016.04.021

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Citations (155)

Methane dry reforming over hydrotalcite-derived Ni–Mg–Al mixed oxides: the influence of Ni content on catalytic activity, selectivity and stability

Catalysis Science & Technology (2016)

Radosław Dębek Monika Motak Dorota Duraczyska Franck Launay María Elena Gálvez

Ni-containing hydrotalcite-derived catalysts were prepared using different Ni loadings (from ca. 4 to 60 wt%) at the same M^II/M^III ratio equal to 3.

Hydrotalcite

Carbon dioxide reforming

10.1039/c6cy00906a

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Citations (140)

Examination of the influence of La promotion on Ni state in hydrotalcite-derived catalysts under CO2 methanation reaction conditions: Operando X-ray absorption and emission spectroscopy investigation

Applied Catalysis B Environment and Energy (2018)

Dominik Wierzbicki Rafał Baran Radosław Dębek Monika Motak María Elena Gálvez

Methanation

Hydrotalcite

Lanthanum

Periclase

10.1016/j.apcatb.2018.03.089

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Citations (103)

Nickel–magnesium-modified cenospheres for CO2 methanation

International Journal of Hydrogen Energy (2022)

Paulina Summa David Montero Bogdan Samojeden Monika Motak Patrick Da Costa

Coal combustion for power generation is a source of CO2 emission into the atmosphere. During that process, waste materials are formed such as cenospheres, which are a fraction of fly ashes. These cenospheres were applied as a catalyst support for the CO2 methanation reaction, which is a promising process for carbon dioxide utilization. Two series of catalysts were compared, a reference one based on the unmodified cenospheres, and a second based on the cenospheres modified by perforation. Nickel supported on Cenospheres nickel, or else nickel with Mg–Al mixed oxides, were prepared by solution combustion synthesis. Perforated cenospheres supporting Mg–Al mixed oxides led to a catalyst with significantly improved catalytic performance (88% at 300 °C) and selectivity to methane (>99% at 300 °C). In this work we evidence better development of the specific surface area, increased surface basicity, improved dispersion of nickel crystallites thanks to the presence of Mg–Al and enlarged number of basic centers at the surface.

Cenosphere

Methanation

10.1016/j.ijhydene.2022.06.094

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Citations (10)

Ni-Fe layered double hydroxide derived catalysts for non-plasma and DBD plasma-assisted CO2 methanation

International Journal of Hydrogen Energy (2019)

Dominik Wierzbicki M. Victoria Moreno Stéphanie Ognier Monika Motak Teresa Grzybek

Methanation

Layered double hydroxides

Nonthermal plasma

Temperature-programmed reduction

Coprecipitation

Thermal desorption spectroscopy

10.1016/j.ijhydene.2019.06.095

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Citations (77)