Advantages of Stainless Steel Sieves as Support for Catalytic N2O Decomposition over K-doped Co3O4.

0456088 - ÚCHP 2016 RIV NL eng J - Journal Article
Klyushina, A. - Pacultová, K. - Krejčová, S. - Slowik, G. - Jirátová, Květa - Kovanda, F. - Ryczkowski, J. - Obalová, L.
Advantages of Stainless Steel Sieves as Support for Catalytic N2O Decomposition over K-doped Co3O4.
Catalysis Today. Roč. 257, Part 1 (2015), s. 2-10. ISSN 0920-5861. E-ISSN 1873-4308.
[AWPAC2014 - International Symposium on Air & Water Pollution Abatement Catalysis. Krakow, 01.09.2014-05.09.2014]
R&D Projects: GA ČR GA14-13750S
Institutional support: RVO:67985858
Keywords : N2O catalytic decomposition * Co3O4 * stainless steel support * potassium promoter * TiO2 support
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 4.312, year: 2015

Supported Co3O4 catalysts were prepared by heating of the cobalt hydroxide synthesized electrochemically on stainless steel sieves and by heating of the commercial TiO2 pellets impregnated with cobalt nitrate solution; the catalysts were modified with potassium promoter. The comparable activities expressed as TOF were evaluated over the K-doped Co3O4 deposited on stainless steel sieves and K-doped Co3O4 grains which is connected with the absence of internal diffusion limitation as was confirmed by calculation of internal effectiveness factor. Mathematic model of ideal plug flow reactor was used for simulation of the catalytic reactor for N2O decomposition to compare catalytic performance of K/Co3O4 catalyst deposited on stainless sieves and TiO2 pellets. Simulation results showed that higher conversions can be achieved over the catalyst deposited on stainless steel sieves in comparison with TiO2 pellets.
Permanent Link: http://hdl.handle.net/11104/0256662