Effects of Loading and Doping on Iron-Based CO2 Hydrogenation Catalysts

Abstract

Hydrogenation of CO2 to hydrocarbons is investigated over g-alumina iron-based catalysts to produce unsaturated hydrocarbons as feedstock chemicals for jet-fuel synthesis. It is shown that conversion levels up to 38% can be achieved by doping the iron with Mn. Furthermore, it was possible to obtain an olefin/paraffin ratio of over 1.16. The doping levels played a crucial role in the product distribution as well as CO2 conversion yields, with over doping leading to suppression of the desirable hydrocarbon products. Characterization of the catalysts by XRD, XPS, and SEM shed light on the role each dopant had on the overall catalyst's activity and production distribution. IRON, CATALYST, OLEFIN/PARAFFIN, RATIO, MANGANESE, CO2, HYDROGENATION, GAMMA-ALUMINA, XRD(X-RAY DIFFRACTION), XPS(X-RAY PHOTOELECTRON SPECTROSCOPY), SEM(SCANNING ELECTRON MICROSCOPE), CSTR(COUNTINUOUSLY STIRRED TANK REACTOR),

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Document Details

Document Type
Technical Report
Publication Date
Aug 24, 2009
Accession Number
ADA507118

Entities

People

  • Dennis R. Hardy
  • Frederic W. Williams
  • Heather Willauer
  • Robert W. Dorner

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Alkanes
  • Chemistry
  • Department Of Defense
  • Diffraction
  • Electron Microscopes
  • Fossil Fuels
  • Fuels
  • Hydrocarbon Fuels
  • Hydrocarbons
  • Jet Engine Fuels
  • Measurement
  • Particle Size
  • Particles
  • Petroleum
  • Renewable Energy
  • Scanning Electron Microscopes
  • X Rays

Fields of Study

  • Chemistry

Readers

  • Materials Science and Engineering.
  • Organic Chemistry
  • Petroleum Engineering

Technology Areas

  • Microelectronics