• About
  • Policies
  • What is openaccess
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Chemistry
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Chemistry
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Characterization of niobium-zirconium mixed oxide as a novel catalyst for selective catalytic reduction of NO x

      Thumbnail
      View / Download
      900.0 Kb
      Author
      Cayirtepe, I.
      Naydenov, A.
      Ivanov, G.
      Kantcheva, M.
      Date
      2009
      Source Title
      Catalysis Letters
      Print ISSN
      1011-372X
      Volume
      132
      Issue
      3-4
      Pages
      438 - 449
      Language
      English
      Type
      Article
      Item Usage Stats
      163
      views
      152
      downloads
      Abstract
      The performance of mixed niobium-zirconium oxide in the SCR of NO x with propene in excess oxygen has been studied. The mixed oxide is prepared by impregnation of hydrated zirconia with acidic solution (pH 0.5) of peroxoniobium(V) complex, [Nb2(O2)3] 4+, ensuring ZrO2:Nb2O5 mole ratio of 6:1. The calcined sample (denoted as 25NbZ-P) has the structure of Zr 6Nb2O17. According to the catalytic test, the conversion of NO x over the 25NbZ-P catalyst passes through a maximum at 220 °C. Based on the in situ FT-IR results, a reaction mechanism is proposed with nitroacetone and NCO species as the key reaction intermediates. The results of the investigation show that the catalytic properties of the Zr6Nb2O17 solid solution could be of interest regarding the development of low-temperature catalyst for the SCR of NO x with hydrocarbons. © 2009 Springer Science+Business Media, LLC.
      Keywords
      C3H6-SCR of NO x
      Catalytic activity
      In situ FT-IR spectroscopy
      Zirconia-niobia solid solution
      Acidic solutions
      C<sub>3</sub>H<sub>6</sub>-SCR of NO <sub>x</sub>
      Catalytic properties
      Catalytic tests
      Excess oxygen
      In-situ
      Key reactions
      Low temperatures
      Mixed oxide
      Mole ratio
      Novel catalysts
      Reaction mechanism
      SCR of NO
      Selective catalytic reduction of NO
      Zirconium oxide
      Calcination
      Catalyst activity
      Crystallization
      Electrochemical sensors
      Hydrates
      Hydrocarbons
      Niobium
      Niobium compounds
      Oxygen
      Propylene
      Solid solutions
      Solidification
      Zirconia
      Zirconium
      Selective catalytic reduction
      Permalink
      http://hdl.handle.net/11693/22602
      Published Version (Please cite this version)
      http://dx.doi.org/10.1007/s10562-009-0150-5
      Collections
      • Department of Chemistry 616
      Show full item record

      Related items

      Showing items related by title, author, creator and subject.

      • Thumbnail

        Sulfur-tolerant BaO/ZrO2/TiO2/Al2O3 quaternary mixed oxides for deNOX catalysis 

        Say, Z.; Mihai, O.; Tohumeken, M.; Ercan, K. E.; Olsson, L.; Ozensoy, E. (Royal Society of Chemistry, 2017)
        Advanced quaternary mixed oxide materials in the form of BaO/Al2O3/ZrO2/TiO2 functionalized with Pt active sites (i.e. Pt/BaO/AZT) were synthesized and structurally characterized via XRD and BET in comparison to a ...
      • Thumbnail

        A versatile bio-inspired material platform for catalytic applications: Micron-sized "buckyball-shaped" TiO<inf>2</inf> structures 

        Erdogan, D. A.; Solouki, T.; Ozensoy, E. (Royal Society of Chemistry, 2015)
        A simple sol-gel synthesis method is presented for the production of micron-sized buckyball-like TiO<inf>2</inf> architectures using naturally occurring Lycopodium clavatum (LC) spores as biotemplates. We demonstrate that ...
      • Thumbnail

        Selective catalytic ammonia oxidation to nitrogen by atomic oxygen species on Ag (111) 

        Karatok, M.; Vovk, E. I.; Koc, A. V.; Ozensoy, E. (American Chemical Society, 2017)
        Ammonia-selective catalytic oxidation was studied on the planar Ag(111) single-crystal model catalyst surface under ultra-high-vacuum (UHV) conditions. A variety of oxygen species were prepared via ozone decomposition on ...

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 1771
      Copyright © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy