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

Result code in 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>

Alternative codes found

RIV/61989100:27710/21:10248393

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10400 - Chemical sciences

Project

<a href="/en/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institute of Environmental Technology - Excellent Research</a><br>

Continuities

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

Publication year

2021

Confidentiality

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