Fixed Bed Catalyst Utilized Patents (Class 570/245)
  • Process and catalyst for the production of dichloroethane
    Patent number: 4323716
    Abstract: An oxychlorination catalyst active in the production of dichloroethane from ethylene, hydrogen chloride and oxygen, consisting of copper chloride on a granular support consisting of alumina in the crystallographic form eta, having a total volume of pores of from 0.3 to 0.5 ml/g and a surface area of from 250 to 400 m.sup.2 /g with at least 90% of said volume attributable to pores with a radius of less than 40 A and at least 90% of said surface area attributable to pores with a radius of less than 30 A.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: April 6, 1982
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Roberto Canavesi, Ferdinando Ligorati, Giancarlo Aglietti
  • Removal of organic contaminants from aqueous hydrochloric acid
    Patent number: 4263269
    Abstract: Method of removing organic contaminants from aqueous hydrochloric acid comprising countercurrently contacting the aqueous acid containing the contaminants and steam at superatmospheric pressures, and recovering said aqueous acid substantially free from organic contaminants. The invention is particularly adapted for the removal of chloral from aqueous hydrochloric acid.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: April 21, 1981
    Assignee: The Dow Chemical Company
    Inventors: John C. Little, Charles R. Youngson, Jr.