The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst
A modified MnO2 clinoptillolite was obtained by using the available zeolite rock from the Sokyrnytsia deposit (Khust district of the Zakarpattia region, Ukraine) using a simple technique of mixing solutions containing separately Mn2+ and MnO4-. It was determined that the total manganese content in t...
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doaj-2d7c3b0d7abf44199dcf3fcad4f39c532021-05-19T06:51:23ZengPC Technology CenterEastern-European Journal of Enterprise Technologies1729-37741729-40612020-12-0166 (108)505810.15587/1729-4061.2020.217119204719The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalystOlena Ivanenko0https://orcid.org/0000-0001-6838-5400Andrii Trypolskyi1https://orcid.org/0000-0003-1682-0241Oleksandr Khokhotva2https://orcid.org/0000-0002-2607-9242Peter Strizhak3https://orcid.org/0000-0003-0280-8719Serhii Leleka4https://orcid.org/0000-0002-4372-9454Ihor Mikulionok5https://orcid.org/0000-0001-8268-7229National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine Nauky ave., 31, Kyiv, Ukraine, 03028National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine Nauky ave., 31, Kyiv, Ukraine, 03028National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056A modified MnO2 clinoptillolite was obtained by using the available zeolite rock from the Sokyrnytsia deposit (Khust district of the Zakarpattia region, Ukraine) using a simple technique of mixing solutions containing separately Mn2+ and MnO4-. It was determined that the total manganese content in the air-dry modified thermally untreated clinoptyllolite was 11.42 mg/g, which is 1.8 % in terms of MnO2. Structural characteristics, namely, the pore size distribution and specific surface area as the main basic characteristics of the catalyst, were studied, which were obtained from the isotherms of low-temperature nitrogen adsorption-desorption. These studies are necessary to determine the limiting stage of CO oxidation. It has been determined that the kinetics of the oxidation process is described by a first-order equation. Based on the obtained characteristics of the catalyst, the kinetic parameters of the process were calculated, namely, the effective and true rate constants and the activation energy, which is 31 kJ/mol. It has been proved that the oxidation reaction of carbon monoxide on an oxide-manganese catalyst proceeds in the intra-diffusion mode. This makes it possible, using the criterion dependences, namely, the Carberry criterion, which is less than 0.05, to assert that the reaction is not limited by the diffusion of CO from the gas stream to the outer surface of the catalyst. It is shown that the transport of carbon monoxide molecules inside the catalyst granules proceeds in the Knudsen regime. The obtained scientific result in the form of a kinetic description of the catalytic oxidation of carbon monoxide with atmospheric oxygen on a manganese oxide catalyst based on zeolite is interesting from a theoretical point of view. From a practical point of view, the calculated kinetic parameters of this process make it possible to calculate a catalytic CO oxidation reactorhttp://journals.uran.ua/eejet/article/view/217119carbon monoxideoxidation kineticsstructural parametersmanganese dioxidezeoliteclinoptilolite |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Olena Ivanenko Andrii Trypolskyi Oleksandr Khokhotva Peter Strizhak Serhii Leleka Ihor Mikulionok |
spellingShingle |
Olena Ivanenko Andrii Trypolskyi Oleksandr Khokhotva Peter Strizhak Serhii Leleka Ihor Mikulionok The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst Eastern-European Journal of Enterprise Technologies carbon monoxide oxidation kinetics structural parameters manganese dioxide zeolite clinoptilolite |
author_facet |
Olena Ivanenko Andrii Trypolskyi Oleksandr Khokhotva Peter Strizhak Serhii Leleka Ihor Mikulionok |
author_sort |
Olena Ivanenko |
title |
The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst |
title_short |
The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst |
title_full |
The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst |
title_fullStr |
The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst |
title_full_unstemmed |
The kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst |
title_sort |
kinetic parameters of the smoke gases purification process from carbon monoxide on a zeolite-based manganese oxide catalyst |
publisher |
PC Technology Center |
series |
Eastern-European Journal of Enterprise Technologies |
issn |
1729-3774 1729-4061 |
publishDate |
2020-12-01 |
description |
A modified MnO2 clinoptillolite was obtained by using the available zeolite rock from the Sokyrnytsia deposit (Khust district of the Zakarpattia region, Ukraine) using a simple technique of mixing solutions containing separately Mn2+ and MnO4-. It was determined that the total manganese content in the air-dry modified thermally untreated clinoptyllolite was 11.42 mg/g, which is 1.8 % in terms of MnO2.
Structural characteristics, namely, the pore size distribution and specific surface area as the main basic characteristics of the catalyst, were studied, which were obtained from the isotherms of low-temperature nitrogen adsorption-desorption. These studies are necessary to determine the limiting stage of CO oxidation.
It has been determined that the kinetics of the oxidation process is described by a first-order equation. Based on the obtained characteristics of the catalyst, the kinetic parameters of the process were calculated, namely, the effective and true rate constants and the activation energy, which is 31 kJ/mol. It has been proved that the oxidation reaction of carbon monoxide on an oxide-manganese catalyst proceeds in the intra-diffusion mode. This makes it possible, using the criterion dependences, namely, the Carberry criterion, which is less than 0.05, to assert that the reaction is not limited by the diffusion of CO from the gas stream to the outer surface of the catalyst. It is shown that the transport of carbon monoxide molecules inside the catalyst granules proceeds in the Knudsen regime.
The obtained scientific result in the form of a kinetic description of the catalytic oxidation of carbon monoxide with atmospheric oxygen on a manganese oxide catalyst based on zeolite is interesting from a theoretical point of view. From a practical point of view, the calculated kinetic parameters of this process make it possible to calculate a catalytic CO oxidation reactor |
topic |
carbon monoxide oxidation kinetics structural parameters manganese dioxide zeolite clinoptilolite |
url |
http://journals.uran.ua/eejet/article/view/217119 |
work_keys_str_mv |
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