Effect of various admixtures on the properties of Mn-substituted cordierite
| Autor: | Vladimir A. Rogov, Lyubov A. Isupova, N. A. Kulikovskaya, N. A. Rudina, E. F. Sutormina |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Cordierite Corundum 02 engineering and technology Manganese engineering.material Vermiculite 010402 general chemistry Talc 01 natural sciences Catalysis Boric acid chemistry.chemical_compound Oxidation state medicine General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Computer Science Applications chemistry Chemical engineering Modeling and Simulation engineering Hydroxide 0210 nano-technology medicine.drug |
| Zdroj: | Kinetics and Catalysis. 57:446-454 |
| ISSN: | 1608-3210 0023-1584 |
| DOI: | 10.1134/s0023158416040133 |
| Popis: | The effect of various admixtures (graphite, sawdust, mullite–silica fiber, vermiculite, boric acid, different size fractions of cordierite, corundum microspheres) in the cordierite stock (mixture of talc, clay, manganese oxide, and aluminum hydroxide) on the formation of Mn-substituted cordierite has been investigated. The admixtures exert an effect on the degree of cordierite formation, on the impurity phase content of the product (including its Mn2O3 content), on the surface concentration of manganese cations, on their oxidation state, on the texture of the catalysts, and on their ammonia oxidation activity. The highest NO x yield is observed with the catalysts containing a coarse fraction of cordierite and corundum microspheres, which are characterized by a high surface concentration of oxidized manganese cations and have large transport pores. |
| Databáze: | OpenAIRE |
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