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Kinetics and Catalysis

, Volume 57, Issue 4, pp 446–454 | Cite as

Effect of various admixtures on the properties of Mn-substituted cordierite

  • E. F. SutorminaEmail author
  • L. A. Isupova
  • N. A. Kulikovskaya
  • N. A. Rudina
  • V. A. Rogov
Article
  • 40 Downloads

Abstract

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.

Keywords

Mn-substituted cordierite manganese oxides porous structure ammonia oxidation 

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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • E. F. Sutormina
    • 1
    Email author
  • L. A. Isupova
    • 1
  • N. A. Kulikovskaya
    • 1
  • N. A. Rudina
    • 1
  • V. A. Rogov
    • 1
    • 2
  1. 1.Boreskov Institute of Catalysis, Siberian BranchRussian Academy of SciencesNovosibirskRussia
  2. 2.Novosibirsk State UniversityNovosibirskRussia

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