Cobalt Based Catalysts on Alkali-Activated Zeolite Foams for N2O Decomposition

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F20%3A10246102" target="_blank" >RIV/61989100:27710/20:10246102 - isvavai.cz</a>

Alternative codes found

RIV/62243136:_____/20:N0000037 RIV/00216275:25310/20:39916849 RIV/62243136:_____/21:N0000008

Result on the web

<a href="https://www.mdpi.com/2073-4344/10/12/1398" target="_blank" >https://www.mdpi.com/2073-4344/10/12/1398</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/catal10121398" target="_blank" >10.3390/catal10121398</a>

Result language

angličtina

Original language name

Cobalt Based Catalysts on Alkali-Activated Zeolite Foams for N2O Decomposition

Original language description

In this work, we studied the effect of alkali-activated zeolite foams modifications on properties and catalytic activity of cobalt phases in the process of catalytic decomposition of N2O. The zeolite foam supports were prepared by alkali activation of natural zeolite followed by acid leaching and ion exchange. The cobalt catalysts were synthesised by a different deposition technique (direct ion exchange (DIE) and incipient wetness impregnation (IWI) method of cobalt on zeolite foams. For comparison, catalysts on selected supports were prepared and the properties of all were compared in catalytic tests in the pellet form and as crushed catalysts to determine the effect of internal diffusion. The catalysts and supports were in detail characterized by a variety of techniques. The catalyst activity strongly depended on the structure of support and synthesis procedure of a cobalt catalyst. Ion exchange method provided active phase with higher surface areas and sites with better reducibility, both of these factors contributed to higher N2O conversions of more than 80% at 450 oC. A large influence can also be attributed to the presence of alkali metals, in particular, potassium, which resulted in a modification of electronic and acid base properties of the cobalt oxide phase on the catalyst surface. The promotional effect of potassium is better reducibility of cobalt species.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20700 - Environmental engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

Catalysts

ISSN

2073-4344

e-ISSN

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Volume of the periodical

10

Issue of the periodical within the volume

12

Country of publishing house

CH - SWITZERLAND

Number of pages

21

Pages from-to

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UT code for WoS article

000601704800001

EID of the result in the Scopus database

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