rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Ammonia oxidation and nitric oxide reduction over Cu(II)Nay zeolites
  name:
    name part: Williamson, William Burton.
    role:
      role term: creator
  name:
    name part: Lunsford, Jack H.
    role:
      role term: degree supervisor.
  name:
    name part: Smith, J.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: txu
    date issued: 1976
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xii, 109 leaves : illustrations ; 28 cm
  abstract: The catalytic activity of Cu(II)NaY zeolites in the oxidation of ammonia by molecular oxygen and by nitric oxide has been investigated for a series of copper-exchanged Y zeolites. Kinetic data were determined for the reactions in a closed circulating system. Infrared spectroscopy was used to verify that copper-ammine complexes were present in the zeolite under reacting conditions. Electron paramagnetic resonance spectroscopy was used to characterize the transition metal complexes within the zeolites and to provide rate data for Cu²⁺ reduction. From these experimental investigations possible reaction mechanisms are proposed in an attempt to clarify the role of the copper-ammonia complex in oxidation reactions catalyzed by CuY zeolites. The oxidation of ammonia by molecular oxygen to nitrogen and water over CuY zeolites has been studied in the temperature range from 160 to 185°C. The reaction rate was first order in NH₃ and zero order in O₂. The rate was proportional to the degree of Cu²⁺ ion exchange up to a level of about one ion per large cavity. An activation energy of 36.7 ± 2.6 kcal/mole was observed for the three exchange levels which were studied (3%, 14%, 44%). For the 14% exchanged sample a turnover number of 0.169 (NH₃ molecules per Cu atom) min⁻¹ was observed at 175°C and an ammonia pressure of 300 Torr..
  note: by William Burton Williamson.
  note: "Major subject: Chemistry."
  note: Vita.
  note: Texas A & M University
  note: Includes bibliographical references (leaves 103-108).
  subject:
    topic: Ammonia
  subject:
    topic: Nitrogen oxides
  subject:
    topic: Oxidizing agents
  subject:
    topic: Reduction (Chemistry)
  subject:
    topic: Zeolites
  subject:
    topic: Chemistry
  subject:
    topic: Ammonia
  subject:
    topic: Nitrogen oxides
  subject:
    topic: Oxidizing agents
  subject:
    topic: Reduction (Chemistry)
  subject:
    topic: Zeolites
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-614614
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-614614
  record info:
    record content source: TXA
    record creation date: 770125
    record change date: 20220104090401.0
    record identifier: in00000604260
    language of cataloging:
      language term: eng