Catalyst for the manufacture of gases containing methane
AssigneeBASF SE
InventorsFranz Josef Broecker, Guenter Zirker, Bruno Triebskorn, Laszlo Marosi, Matthias Schwarzmann, Winfried Dethlefsen, Knut Kaempfer
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Abstract
The compound Ni.sub.6 Al.sub.2 (OH).sub.16. CO.sub.3. 4H.sub.2 O is isolated from aqueous solution. The catalyst is obtained from this compound by drying, calcination and subsequent reduction in a stream of hydrogen, whilst maintaining very specific temperature gradients between the drying stage and the calcination stage. A process for the manufacture of gases containing methane from hydrocarbons by steam cracking, in which the abovementioned catalyst is employed, is also described.
Claims4
A catalyst produced by the process consisting essentially of precipitating the compound Ni.sub.6 Al.sub.2 (OH).sub.16.CO.sub.3.4H.sub.2 O as a catalyst precursor from an aqueous medium;
- drying said precipitate at a temperature of from 80.degree. to 180.degree.C;
- raising the temperature of said precipitate between the drying stage and the calcination stage at a gradient of 1.66.degree.C/minute to 3.33.degree.C/minute;
- calcining said precipitate at a temperature of from 300.degree. to 550.degree.C;
- and thereafter reducing said precipitate in a stream of hydrogen to form said catalyst.
A catalyst produced by the process consisting essentially of precipitating the compound Ni.sub.6 Al.sub.2 (OH).sub.16.CO.sub.3.4H.sub.2 O on a support as a catalyst precursor from an aqueous medium;
- drying said precipitate and said support at a temperature of from 80.degree. to 180.degree.C;
- raising the temperature of said precipitate and said support between the drying stage and the calcination stage at a gradient of 1.66.degree.C/minute to 3.33.degree.C/minute;
- calcining said precursor at a temperature of from 300.degree. to 550.degree.C;
- and thereafter reducing said precursor in a stream of hydrogen to form said catalyst.
Dependencies are inferred from the claim text.