Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions Metadata

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  • Main Title Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: DOE; USDOE, Washington, DC (United States)


  • Name: Textron, Inc., Everett, MA (United States). Textron Defense Systems
    Place of Publication: United States


  • Creation: 1991-08-01


  • English


  • Content Description: The program objective is to generate ultra-fine catalyst particles (20 to 400 {Angstrom} in size) and quantify their potential for improving coal dissolution in the solubilization stage of two-stage catalytic-catalytic liquefaction systems. It has been shown that catalyst activity increases significantly with decreasing particle size for particle sizes in the submicron range. Ultra-fine catalyst particle generation will be accomplished using a novel two-step process. First, the severe conditions produced by a supercritical fluid (e.g., supercritical H{sub 2}O or CO{sub 2}) will be used to dissolve suitable catalyst compounds (e.g., Fe{sub 2}O{sub 3}, FeS{sub 2}, and/or Fe(CO){sub 5}). Sulfur containing compounds may be added to the supercritical solvent during catalyst dissolution to enhance the catalytic activity of the resulting ultra-fine, iron based, catalyst particles.
  • Physical Description: Pages: (21 p)


  • Keyword: Catalytic Effects
  • STI Subject Categories: 01 Coal, Lignite, And Peat
  • Keyword: Sulfides
  • Keyword: Progress Report
  • Keyword: Document Types
  • Keyword: Transition Element Compounds 010405* -- Coal, Lignite, & Peat-- Hydrogenation & Liquefaction
  • Keyword: Oxides
  • Keyword: Chalcogenides
  • Keyword: Liquefaction
  • Keyword: Iron Sulfides
  • Keyword: Iron Oxides
  • Keyword: Carbonyls
  • Keyword: Particle Size
  • Keyword: Sulfur Compounds
  • Keyword: Supercritical State
  • Keyword: Coal Liquefaction
  • Keyword: Thermochemical Processes
  • Keyword: Size
  • Keyword: Oxygen Compounds
  • Keyword: Solubility
  • Keyword: Iron Compounds
  • Keyword: Catalysts
  • Keyword: Synthesis


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Other: DE92015948
  • Report No.: DOE/PC/90053-T1
  • Grant Number: AC22-90PC90053
  • DOI: 10.2172/5060284
  • Office of Scientific & Technical Information Report Number: 5060284
  • Archival Resource Key: ark:/67531/metadc1057519


  • Display Note: OSTI; NTIS; GPO Dep.