JP2892390B

PURPOSE:To efficiently and uniformly distribute Ru and/or Pt from the surface of a catalyst toward the interior by dissolving an Ru compd. and/or a Pt compd. in an ethanol-water mixture having a certain ethanol content or above. CONSTITUTION:When a catalyst supporting groups VI and VIII metals of th...

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Bibliographische Detailangaben
Hauptverfasser: SHIRAISHI KATSUZO, KAMO TETSUO, YAMAGUCHI TOSHIO, KANEHARA NAOTO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE:To efficiently and uniformly distribute Ru and/or Pt from the surface of a catalyst toward the interior by dissolving an Ru compd. and/or a Pt compd. in an ethanol-water mixture having a certain ethanol content or above. CONSTITUTION:When a catalyst supporting groups VI and VIII metals of the periodic table is produced, a soln. prepd. by dissolving an Ru compd. and/or a Pt compd. in an ethanol-water mixture having >=50% ethanol content is used as a soln. to be impregnated. This soln. is impregnated into a catalyst and this catalyst is dried and calcined or dried and/or calcined and subjected to proper reduction treatment to obtain a hydrogenation catalyst. Since the viscosity of the soln. is lowered and the affinity of Ru and/or Pt for the catalyst is reduced, Ru and/or Pt is uniformly dispersed even in the interior of the catalyst and high activity is ensured.