About: Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition

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Description	The series of alkali metals promoted catalysts was prepared by impregnation of thermally treated Co-Mn-Al layered double hydroxides (Co/Mn/Al = 4/1/1) with aqueous nitrate solutions of alkali metals using a pore-filling method. In this way prepared samples were characterized by AAS, AES, SEM, XRD, TPR and TPD. The elemental mapping of alkali metals indicated homogeneous promoter distribution on the catalysts' surface. Substantial differences between surface (XPS) and bulk chemical composition (AAS, AES) were observed. Presence of alkali metals promoters in the prepared catalysts influenced both redox (TPR-H2) and acid-base surface properties (TPD-CO2, TPD-NH3). The effect of alkali promoters on the rate of N2O decomposition was investigated in an inert gas. The Li-promoted catalyst was less active for N2O decomposition than the non-modified one, while the same catalytic activity on Na-containing catalyst was observed. On the other hand, rubidium and cesium caused the increase in N2O conversion. Their beneficial influence on the catalyst activity is probably of electronic nature. The series of alkali metals promoted catalysts was prepared by impregnation of thermally treated Co-Mn-Al layered double hydroxides (Co/Mn/Al = 4/1/1) with aqueous nitrate solutions of alkali metals using a pore-filling method. In this way prepared samples were characterized by AAS, AES, SEM, XRD, TPR and TPD. The elemental mapping of alkali metals indicated homogeneous promoter distribution on the catalysts' surface. Substantial differences between surface (XPS) and bulk chemical composition (AAS, AES) were observed. Presence of alkali metals promoters in the prepared catalysts influenced both redox (TPR-H2) and acid-base surface properties (TPD-CO2, TPD-NH3). The effect of alkali promoters on the rate of N2O decomposition was investigated in an inert gas. The Li-promoted catalyst was less active for N2O decomposition than the non-modified one, while the same catalytic activity on Na-containing catalyst was observed. On the other hand, rubidium and cesium caused the increase in N2O conversion. Their beneficial influence on the catalyst activity is probably of electronic nature. (en)
Title	Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition (en)
skos:prefLabel	Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition (en)
skos:notation	RIV/61989100:27360/11:86080611!RIV12-GA0-27360___
http://linked.open...avai/predkladatel	Fakulta metalurgie a materiálového inženýrství
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(2B06068), P(GA106/09/1664)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Karásková, Kateřina
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta metalurgie a materiálového inženýrství
http://linked.open...dnocenehoVysledku	185207
http://linked.open...ai/riv/idVysledku	RIV/61989100:27360/11:86080611
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Nitrous Oxide, Catalytic Decomposition, Mixed Oxide Catalyst, Co-Mn-Al Layered Double Hydroxide, Alkali Metals (en)
http://linked.open.../riv/klicoveSlovo	Alkali Metals Catalytic Decomposition Co-Mn-Al Layered Double Hydroxide Mixed Oxide Catalyst Nitrous Oxide
http://linked.open...ontrolniKodProRIV	[25AD9FA0E75D]
http://linked.open...v/mistoKonaniAkce	Tatranské Matliare
http://linked.open...i/riv/mistoVydani	Bratislava
http://linked.open...i/riv/nazevZdroje	38th International Conference of Slovak Society of Chemical
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Supported oxidic catalysts containing low amount of active species as catalysts for N2O decomposition Evaluation, Verification and Interpretation of the environmental loads of the Czech Republic
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Jirátová, Květuše Karásková, Kateřina Kovanda, František Kulová, Taťána Obalová, Lucie
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2011-05-23 (xsd:date)
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Slovenská technická univerzita v Bratislave
https://schema.org/isbn	978-80-227-3503-2
http://localhost/t...ganizacniJednotka	27360
is http://linked.open...avai/riv/vysledek of	Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition Alkali metals promoted Co-Mn-Al mixed oxide for N2O catalytic decomposition

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