Cobalt spinel supported on open-cell foam for N2O catalytic decomposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10248393" target="_blank" >RIV/61989100:27360/21:10248393 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/21:10248393

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cobalt spinel supported on open-cell foam for N2O catalytic decomposition

Popis výsledku v původním jazyce

This contribution was presented as poster on TechConnect Europe Innovation Conference, 15. - 17. 11. 2021, Malmö, Sweden. Nitrous oxide contributes to the greenhouse effect and stratospheric ozone depletion. Considering its long lifetime of about 150 years, the reduction of N2O emissions from industrial sources is necessary. For this reason, catalytic decomposition of N2O to oxygen and nitrogen is of great interest. Among different catalysts examined for this reaction, cobalt mixed oxides with the spinel structure have been identified as the most active. Further increase of their activity can be achieved by modification of electronic properties by alkali metal promoters; especially by Cs. Although verification of catalytic performance of cobalt spinel modified with Cs and K were successful, large-scale applications of the bulk cobalt spinel catalyst are limited due to problems with its shaping and the relatively high price of cobalt. Deposition of cobalt active phase on a support surface could be the solution and open cell foams belong to the attractive structured supports. Contribution deals with Co3O4 cobalt mixed oxide with cesium promoter deposited on different ceramic open-cell foams (Al2O3 + SiO2, ZrO2 and SiO2 + Al2O3 + C-graphite). The catalysts were tested for nitrous oxide decomposition and characterized by AAS, XRD, TPR-H2, FTIR, Raman, XPS, SEM and low-temperature nitrogen adsorption. Direct correlation of specific rate constant for N2O decomposition and surface Cs/Co molar ratio was found.

Název v anglickém jazyce

Cobalt spinel supported on open-cell foam for N2O catalytic decomposition

Popis výsledku anglicky

This contribution was presented as poster on TechConnect Europe Innovation Conference, 15. - 17. 11. 2021, Malmö, Sweden. Nitrous oxide contributes to the greenhouse effect and stratospheric ozone depletion. Considering its long lifetime of about 150 years, the reduction of N2O emissions from industrial sources is necessary. For this reason, catalytic decomposition of N2O to oxygen and nitrogen is of great interest. Among different catalysts examined for this reaction, cobalt mixed oxides with the spinel structure have been identified as the most active. Further increase of their activity can be achieved by modification of electronic properties by alkali metal promoters; especially by Cs. Although verification of catalytic performance of cobalt spinel modified with Cs and K were successful, large-scale applications of the bulk cobalt spinel catalyst are limited due to problems with its shaping and the relatively high price of cobalt. Deposition of cobalt active phase on a support surface could be the solution and open cell foams belong to the attractive structured supports. Contribution deals with Co3O4 cobalt mixed oxide with cesium promoter deposited on different ceramic open-cell foams (Al2O3 + SiO2, ZrO2 and SiO2 + Al2O3 + C-graphite). The catalysts were tested for nitrous oxide decomposition and characterized by AAS, XRD, TPR-H2, FTIR, Raman, XPS, SEM and low-temperature nitrogen adsorption. Direct correlation of specific rate constant for N2O decomposition and surface Cs/Co molar ratio was found.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10400 - Chemical sciences

Projekt

<a href="/cs/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institut environmentálních technologií - excelentní výzkum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů