Effect of the Oxidation State of Manganese in the Manganese Oxides Used in the Synthesis of Mn-Substituted Cordierite on the Properties of the Product Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2016, Volume: 57, Number: 2, Pages: 255-262 Pages count : 8 DOI: 10.1134/S0023158416020142 | ||||
| Tags | ammonia oxidation catalysts, manganese oxides, Mn-substituted cordierite | ||||
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Abstract:
Catalysts based on Mn-substituted cordierite 2MnO · 2Al2O3 · 5SiO2 have been synthesized using different manganese oxides (MnO, Mn2O3, and MnO2) at a calcination temperature of 1100°C. The catalysts differ in their physicochemical properties, namely, phase composition (cordierite content and crystallinity), manganese oxide distribution and dispersion, texture, and activity in high-temperature ammonia oxidation. The synthesis involving MnO yields Mn-substituted cordierite with a defective structure, because greater part of the manganese cations is not incorporated in this structure and is encapsulated and the surface contains a small amount of manganese oxides. This catalyst shows the lowest ammonia oxidation activity. The catalysts prepared using Mn2O3 or MnO2 are well-crystallized Mn-substituted cordierite whose surface contains different amounts of manganese oxides differing in their particle size. They ensure a high nitrogen oxides yield in a wide temperature range. The product yield increases with an increasing surface concentration of Mn3+ cations. The highest NO x yield (about 76% at 800–850°C) is observed for the MnO2-based catalyst, whose surface contains the largest amount of manganese oxides.
Cite:
Sutormina E.F.
, Isupova L.A.
, Plyasova L.M.
, Dovlitova L.S.
, Rudina N.A.
, Rogov V.A.
Effect of the Oxidation State of Manganese in the Manganese Oxides Used in the Synthesis of Mn-Substituted Cordierite on the Properties of the Product
Kinetics and Catalysis. 2016. V.57. N2. P.255-262. DOI: 10.1134/S0023158416020142 WOS Scopus РИНЦ AN OpenAlex
Effect of the Oxidation State of Manganese in the Manganese Oxides Used in the Synthesis of Mn-Substituted Cordierite on the Properties of the Product
Kinetics and Catalysis. 2016. V.57. N2. P.255-262. DOI: 10.1134/S0023158416020142 WOS Scopus РИНЦ AN OpenAlex
Original:
Сутормина Е.Ф.
, Исупова Л.А.
, Плясова Л.М.
, Довлитова Л.С.
, Рудина Н.А.
, Рогов В.А.
Влияние степени окисления оксидов марганца, используемых для синтеза Mn-замещенного кордиерита, на его свойства
Кинетика и катализ. 2016. Т.57. №2. С.250-258. DOI: 10.7868/S0453881116020143 РИНЦ OpenAlex
Влияние степени окисления оксидов марганца, используемых для синтеза Mn-замещенного кордиерита, на его свойства
Кинетика и катализ. 2016. Т.57. №2. С.250-258. DOI: 10.7868/S0453881116020143 РИНЦ OpenAlex
Dates:
| Submitted: | Jun 16, 2015 |
| Published print: | Mar 1, 2016 |
| Published online: | May 12, 2016 |
Identifiers:
| Web of science: | WOS:000376094000018 |
| Scopus: | 2-s2.0-84979547108 |
| Elibrary: | 27095732 |
| Chemical Abstracts: | 2016:773124 |
| OpenAlex: | W2375512310 |