Effect of the Mechanical Activation of a Mixture of MnCO3 ⋅ mMn(OH)2 ⋅ nH2O and AlOOH as a Stage of the Preparation of a MnOx–Al2O3 Catalyst on Its Phase Composition and Catalytic Activity in CO Oxidation Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2015, Volume: 56, Number: 3, Pages: 359-368 Pages count : 10 DOI: 10.1134/S0023158415030015 | ||||||
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Abstract:
The effect of the mechanical activation of a mixture of MnCO3 · mMn(OH)2 · nH2O and AlOOH as a stage in the preparation of a MnO x -Al2O3 catalyst on the characteristics of the resulting samples was studied. It was found that the catalytic activity of MnO x -Al2O3 increased even after mechanical activation for 5 min. It was established that a decrease in the concentration of manganese hydroxocarbonate within the limits of the tested ratios between the components exerted the greatest positive effect of mechanical activation on catalytic activity. This was likely because the dispersion of this compound increased and interactions between the components strengthened in the course of mechanical activation. This was evidenced by a considerable increase in the amount of the α-Al2O3 phase relative to δ-Al2O3 in the catalyst calcined at 950°C. According to the results of temperature-programmed reduction with hydrogen, the formation of a larger number of catalytically active, fine MnO x particles after high-temperature heat treatment was responsible for the strengthening of interactions between the initial components upon mechanical activation. Transmission electron-microscopic data also indicated an increase in the dispersity of manganese oxide particles with the use of mechanical activation as a stage of the preparation of the MnO x -Al2O3 catalyst.
Cite:
Afonasenko T.N.
, Bulavchenko O.A.
, Knyazheva O.A.
, Baklanova O.N.
, Gulyaeva T.I.
, Trenikhin M.V.
, Tsybulya S.V.
, Tsyrulʹnikov P.G.
Effect of the Mechanical Activation of a Mixture of MnCO3 ⋅ mMn(OH)2 ⋅ nH2O and AlOOH as a Stage of the Preparation of a MnOx–Al2O3 Catalyst on Its Phase Composition and Catalytic Activity in CO Oxidation
Kinetics and Catalysis. 2015. V.56. N3. P.359-368. DOI: 10.1134/S0023158415030015 WOS Scopus РИНЦ AN OpenAlex
Effect of the Mechanical Activation of a Mixture of MnCO3 ⋅ mMn(OH)2 ⋅ nH2O and AlOOH as a Stage of the Preparation of a MnOx–Al2O3 Catalyst on Its Phase Composition and Catalytic Activity in CO Oxidation
Kinetics and Catalysis. 2015. V.56. N3. P.359-368. DOI: 10.1134/S0023158415030015 WOS Scopus РИНЦ AN OpenAlex
Original:
Афонасенко Т.Н.
, Булавченко О.А.
, Княжева О.А.
, Бакланова О.Н.
, Гуляева Т.И.
, Тренихин М.В.
, Цыбуля С.В.
, Цырульников П.Г.
Влияние механической активации смеси MnCO3 · mMn(OH)2 · nH2O и AlOOH как стадии приготовления катализатора MnOX Al2O3 на его фазовый состав и каталитическую активность в реакции окисления СО
Кинетика и катализ. 2015. Т.56. №3. С.359-368. DOI: 10.7868/S0453881115030016 РИНЦ OpenAlex
Влияние механической активации смеси MnCO3 · mMn(OH)2 · nH2O и AlOOH как стадии приготовления катализатора MnOX Al2O3 на его фазовый состав и каталитическую активность в реакции окисления СО
Кинетика и катализ. 2015. Т.56. №3. С.359-368. DOI: 10.7868/S0453881115030016 РИНЦ OpenAlex
Dates:
| Submitted: | Oct 9, 2014 |
| Published print: | Apr 30, 2015 |
| Published online: | Jun 16, 2015 |
Identifiers:
| Web of science: | WOS:000356369200015 |
| Scopus: | 2-s2.0-84933520222 |
| Elibrary: | 23973229 |
| Chemical Abstracts: | 2015:1022043 |
| OpenAlex: | W606588860 |