中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.037 seconds)

    Improvements in the removal of lmpurities from liquids
    4.
    发明专利
    Improvements in the removal of lmpurities from liquids 未知

    公开(公告)号：GB907158A

    公开(公告)日：1962-10-03

    申请号：GB1781660

    申请日：1960-05-20

    Applicant: BASF AG

    Inventor： SCHUETZE MAX ,  MUELLER HERBERT ,  LAURER PETER RUDOLF

    IPC: B01D15/00 ,  B01J23/72 ,  B01J23/89 ,  C07C7/148 ,  C07C17/38 ,  C07D307/08 ,  C07D319/12

    Abstract: Impurities are removed from organic liquids by the use of a large surfaced carrier containing reduced copper. Prior to use the carrier may be treated with hydrogen, carbon monoxide, oxygen or mixtures containing these. The organic liquids may belong to widely different classes, the following individual examples being given; normal-heptane, iso-octane, cyclohexane, cyclohexene, methylcyclohexane, benzene, toluene, chlorbenzene, carbon tetrachloride, trichloroethylene, methanol, ethanol, diethyl ether, dibutyl ether, tetrahydrofuran, dioxane, and ethyl acetate. Substances which under normal conditions are not liquid may also be purified according to the process by liquefying them under pressure in the case of gases, by bringing them in the fused state at elevated temperature into contact with supported copper, or by treating suitable solutions of them, e.g. propylene, butane, butadiene-(1,3), naphthalene and durene. Examples of impurities include oxygen, halogen, hydrogen peroxide, hydrogen sulphide, sulphur dioxide, hydrogen halides, carbon oxysulphide, iron pentacarbonyl, ammonia, acetylene, thiophene and amines. Suitable carriers are magnesium silicate and the oxides, hydroxides, carbonates and silicates of iron, manganese, cobalt and/or nickel. The addition of activators, such as compounds of the alkaline earths, zinc, cadmium, chromium, molybdenum, tungsten, vanadium, titanium, gold, and/or thorium, is recommended. The ratio by weight of copper to the other compounds of the composition may lie between 1 : 20 and 20 : 1. Specification 869,052 is referred to.

    Catalytic oxidation of small amounts of gaseous hydrocarbons in atmospheric air
    6.
    发明专利
    Catalytic oxidation of small amounts of gaseous hydrocarbons in atmospheric air 未知

    公开(公告)号：GB983372A

    公开(公告)日：1965-02-17

    申请号：GB3050062

    申请日：1962-08-09

    Applicant: BASF AG

    Inventor： SCHUETZE MAX ,  BUSCHMANN KARL ,  ERMSHAUS HANS-DIETER

    IPC: B01D53/34

    Abstract: Traces of gaseous hydrocarbons are removed from air by passage over cobalt oxide or cobalt and silver oxides, at temperatures from 80 DEG 180 DEG C. and space velocities of 1,000-30,000 v/v/hr. The catalysts are prepared by precipitation from CO, or CO and Ag salt solutions by caustic soda or sodium carbonate, preferably in the presence of an oxidizing agent such as sodium hypochlorite or by passing air through the solution. The precipitate is washed, formed into pellets and dried at 110 DEG C. The hydrocarbon oxidation is preferably effected at 5-300 atmospheres pressure and the treated air may then be passed to an air liquefaction plant without risk of explosion, preferably after removing the carbon dioxide oxidation product.

Patent Agency Ranking