中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

98 records (took 0.048 seconds)

    Process for preparing highly active catalysts on the basis of phosphomolybdic acid
    11.
    发明专利
    Process for preparing highly active catalysts on the basis of phosphomolybdic acid 未知

    公开(公告)号：DE3218936A1

    公开(公告)日：1982-12-23

    申请号：DE3218936

    申请日：1982-05-19

    Applicant: STANDARD OIL CO OHIO

    Inventor： CALLAHAN JAMES LOUIS ,  SHAW WILFRID GARSIDE ,  MILLER ARTHUR FRANCIS

    IPC: B01J27/188 ,  B01J27/19 ,  B01J37/02 ,  C07C51/235 ,  C07C51/25 ,  C07C57/055 ,  B01J27/18

    Abstract: Process for preparing highly active catalysts on the basis of phosphomolybdic acid by preparing a solution of hydrated phosphomolybdic acid in an essentially anhydrous alkyl alcohol, optionally with the addition of a base to the solution, evaporating the solution to prepare a catalyst powder, and final drying and calcining of the powder to form the active catalyst. A further preparation process comprises preparing a solution of hydrated phosphomolybdic acid in an essentially anhydrous alkyl alcohol, evaporation of the solution to prepare a concentrate, impregnating a catalyst support material with the concentrate, bringing the impregnated support into contact with ammonia gas in an amount which is sufficient to form an insoluble precipitate of ammonium alkyl phosphomolybdic acid within the pore structure of the support material, followed by drying and calcining the impregnated support material to form a laminar catalyst.

Patent Agency Ranking