| 摘要 |
PURPOSE:To prepare a copper-zinc-Al-B catalyst with excellent activity and mechanical strength stably by a method wherein copper and zinc components obtained from a soluble salt by using a specified precipitators when preparing the catalyst. CONSTITUTION:A copper component (with a B component) is precipitated from a water-soluble copper salt solution, such as, copper nitrate, etc. (a water-soluble B compound may be contained) while using ammonium carbonate or ammonium bicarbonate as a precipitator. A zinc component (with the B component) is separately precipitated from a water-soluble zinc salt solution, such as, zinc nitrate, etc. (the water-soluble B compound may be contained) while employing alkali hydroxide as a precipitator. A mixture of the copper salt and the zinc salt is kneaded and dried with an alumina sol precursing compound (alumina sol) and burnt. This catalyst shows excellent activity under comparatively low temperatures and low pressure, and is superior in a pulverizability, collapse strength and moldability. |
