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: Catalytic properties of alkali metal-graphite intercalation compounds
  name:
    name part: Wang, Yeong-Peng
    role:
      role term: creator
  name:
    name part: Adair, Thomas W., III
    role:
      role term: degree committee member.
  name:
    name part: Lunsford, Jack H.
    role:
      role term: degree committee member.
  name:
    name part: Rosynek, Michael P.
    role:
      role term: degree supervisor.
  name:
    name part: Tang, Yi-Noo
    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: xx
    date issued: 1983
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xx, 171 leaves : illustrations ; 29 cm
  abstract: Identities, as well as purities, of synthesized alkali metal-graphite intercalation compounds were confirmed by X-ray diffraction methods. Second-stage compounds (MC(,24), M = K, Rb, or Cs) adsorb large amounts of nitrogen and hydrogen at -196(DEGREES)C via penetration of gaseous molecules. By contrast, the densely packed alkali metal layers in the corresponding first-stage compounds (MC(,8)) restrict the penetration of gaseous molecules. For ethylene hydrogenation at 40-70(DEGREES)C, catalytic activities increase from KC(,n) to CsC(,n) (n = 8 or 24), and activation energies decrease from KC(,n) to CsC(,n). Due to the high mobilities of alkali metal species in MC(,24), the latter have higher catalytic activities than do the corresponding MC(,8) compounds. Although exposure to large amounts of air deactivates these catalysts, addition of small amounts of air increases their activities to various extents. Based on this poisoning study, these intercalates can be divided into two groups: the first group contains KC(,8), KC(,24), and RbC(,8), and the second group contains RbC(,24), CsC(,8), and CsC(,24).For carbon monoxide hydrogenation, both catalytic activities and product distributions vary with CO conversion. Over KC(,8), KC(,24), and RbC(,8), maximum activities are quite high at 300(DEGREES)C, and ethane dominates the hydrocarbon products, whereas for RbC(,24), RbC(,36), CsC(,8), and CsC(,24), maximum activities are relatively low and large amounts of methane are formed. Both activities and product distributions are related to the strengths of metal-graphite interactions. Contrary to the behavior of transition metal catalysts, decreasing amounts of methane are produced with increasing reaction temperature. 1-Butene isomerization over these compounds proceeds via a base-catalyzed mechanism, as confirmed by high initial cis/trans product ratios. Activation energies over MC(,8), which depend on basicities of the graphitic anions, decrease from KC(,8) to CsC(,8). Again,…
  note: "Major subject: Chemistry."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. in Philosophy Texas A & M University 1983
  note: Includes bibliographical references (leaves 165-170).
  subject:
    topic: Alkali metals
  subject:
    topic: Clathrate compounds
  subject:
    topic: Chemistry
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-548664
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-548664
  record info:
    record content source: TXA
    record creation date: 841025
    record change date: 20220103135218.0
    record identifier: in00000538680
    language of cataloging:
      language term: eng