| 摘要 |
Methane is made by reacting C5 to C8 paraffins with steam at 600 DEG to 925 DEG F. in the presence of a catalyst made by coprecipitating Ni and Al as hydroxides, carbonates or basic carbonates from aqueous solutions, separating a precipitate which contains 0.4 to 1.3 atoms of Ni per atom of Al, drying at 200 DEG to 400 DEG F. calcining at 600 DEG to 925 DEG F. and reducing in hydrogen. A fuel gas rich in methane may be made in an analogous manner. Generally the proportion of steam is about 1.5 to 5 parts by weight per part of hydrocarbon and the reaction zone pressure 1 to 70 atmospheres. Examples describe the reforming of hexane with addition of desired of C5/C6 naphtha. Gases after removal of CO2 and water vapour of calorific value 600 to 1000 B.T.U./S.C.F. may be obtained.ALSO:A nickel/alumina catalyst contains 0.4 to 1.3 atoms of nickel per atom of alumina and is made by coprecipitating Ni and Al as hydroxides carbonates or basic carbonates followed by drying at 200 - 400 DEG F, calcining at 600 - 925 DEG F, and reducing with hydrogen. The catalyst may be promoted by a Ba, Sr, Cs or K compound. Details of catalyst surface area are given.
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