Patents by Inventor Franz J. Mueller

Franz J. Mueller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Separating rhodium from solution containing rhodium carbonyl complexes and converting the separated rhodium into soluble rhodium carbonyl complexes
    Patent number: 4131640
    Abstract: A process for the separation of rhodium from a solution containing a rhodium carbonyl complex such as is obtained in the carbonylation of an alkanol or of an olefinically or acetylenically unsaturated compound with carbon monoxide and water and conversion of the separated rhodium into a soluble rhodium carbonyl complex, in which the solution containing the rhodium carbonyl complex is treated with hydrogen in the presence of a carrier substance at a temperature of from 25.degree. to 300.degree. C and at a pressure of from 1 to 700 atmospheres, the solution freed from rhodium is separated and the rhodium precipitated on the carrier is converted into a soluble rhodium carbonyl complex by treatment with carbon monoxide in the presence of a solvent and a compound which can replace the carbon monoxide as a ligand at a temperature of from 20.degree. to 300.degree. C and at a pressure of from 1 to 700 atmospheres.
    Type: Grant
    Filed: January 4, 1973
    Date of Patent: December 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Nikolaus von Kutepow, Franz J. Mueller, Peter Reuter