The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2010
Filed:
Nov. 23, 2006
Christian Gückel, Paramus, NJ (US);
Klaus Wanninger, Kolbermoor, DE;
Marvin Estenfelder, Karlsruhe, DE;
Claudia Fischer, Feldkirchen, DE;
Uwe Dürr, Fürth, DE;
Christian Gückel, Paramus, NJ (US);
Klaus Wanninger, Kolbermoor, DE;
Marvin Estenfelder, Karlsruhe, DE;
Claudia Fischer, Feldkirchen, DE;
Uwe Dürr, Fürth, DE;
Süd-Chemie AG, Munich, DE;
Abstract
The invention relates to a coated catalyst, especially for oxidation of methanol to formaldehyde, which, on an inert, preferably essentially nonporous, support body, has at least one coating which comprises, before the removal of the organic fractions of components b) and c): (a) oxides, or precursor compounds convertible to the corresponding oxides, of molybdenum and iron, where the molar ratio of Mo:Fe is between 1:1 and 5:1, and optionally further metallic components or metal oxide components or precursor compounds convertible to the corresponding oxides, (b) at least one organic binder, preferably an aqueous dispersion of copolymers, especially selected from vinyl acetate/vinyl laurate, vinyl acetate/ethylene, vinyl acetate/acrylate, vinyl acetate/maleate, styrene/acrylate or mixtures thereof, and (c) at least one further component selected from the group consisting of SiOsol or precursors thereof, AlOsol or precursors thereof, ZrOsol or precursors thereof, TiOsol or precursors thereof, waterglass, MgO, cement, monomeric, oligomeric or polymeric silanes, alkoxysilanes, aryloxysilanes, acryloyloxysilanes, aminosilanes, siloxanes or silanols. Additionally described is a process for preparing the catalyst and its preferred use.