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Methanation Activity of Raney Nickel Catalysts. Effect of Proportion of NiAl3 and Ni2Al3 in Precursor Alloys.


PB279656

Publication Date 1978
Personal Author Oden, L. L.; Russell, J. H.
Page Count 20
Abstract The Bureau of Mines is developing Raney nickel catalysts for converting synthesis gas derived from coal to synthetic natural gas. The present report describes the relationship between the composition of Raney nickel alloys in the range NiAl3 to Ni2Al3 equilibrated at 840C and the properties of catalysts obtained therefrom. Methanation activity was determined in the temperature range of 300 to 360C in a flowing gas stream containing 1 pct CO, 8 pct H2 and the remainder He. One ppm H2S was added to the gas stream at 400C to evaluate the susceptibility of catalysts to sulfur poisoning. The total surface area and the active surface area were measured by nitrogen adsorption at liquid nitrogen temperature and by the adsorption of hydrogen at room temperature, respectively. Total surface area, and active surface area were found to increase with increasing proportion of Al-saturated Ni2Al3 in the precursor alloy, but methanation activity and resistance to poisoning by H2S were nearly constant. However, the methanation activity of the catalyst prepared from stoichiometric Ni2Al3 was less than half that of the other catalysts.
Keywords
  • Methanation
  • Catalysts
  • Coal gasification
  • Natural gas
  • Fossil fuels
  • Manufactured gas
  • Surfaces
  • Activity
  • Alloys
  • Hydrogen sulfide
  • Laboratory equipment
  • Raney nickel catalysts
  • Synthetic fuels
Source Agency
  • Technical Information Center Oak Ridge Tennessee
  • Bureau of Mines
NTIS Subject Category
  • 99F - Physical & Theoretical Chemistry
  • 97F - Fuel Conversion Processes
Corporate Authors Bureau Of Mines, Albany, Oreg. Albany Metallurgy Research Center.; Energy Research and Development Administration, Washington, D.C.
Supplemental Notes Prepared in cooperation with Energy Research and Development Administration.
Document Type Technical Report
Title Note Rept. of investigations 6 Jul 76-7 Jul 77.
NTIS Issue Number 197815
Methanation Activity of Raney Nickel Catalysts. Effect of Proportion of NiAl3 and Ni2Al3 in Precursor Alloys.
Methanation Activity of Raney Nickel Catalysts. Effect of Proportion of NiAl3 and Ni2Al3 in Precursor Alloys.
PB279656

  • Methanation
  • Catalysts
  • Coal gasification
  • Natural gas
  • Fossil fuels
  • Manufactured gas
  • Surfaces
  • Activity
  • Alloys
  • Hydrogen sulfide
  • Laboratory equipment
  • Raney nickel catalysts
  • Synthetic fuels
  • Technical Information Center Oak Ridge Tennessee
  • Bureau of Mines
  • 99F - Physical & Theoretical Chemistry
  • 97F - Fuel Conversion Processes
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