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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

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