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:
Dec. 08, 2009
Filed:
Dec. 09, 2005
Susan J. Siler, Lake Jackson, TX (US);
Joseph D. Henry, Lake Jackson, TX (US);
David L. Trent, Lake Jackson, TX (US);
Larry N. Ito, Midland, MI (US);
David G. Barton, Midland, MI (US);
Susan J. Siler, Lake Jackson, TX (US);
Joseph D. Henry, Lake Jackson, TX (US);
David L. Trent, Lake Jackson, TX (US);
Larry N. Ito, Midland, MI (US);
David G. Barton, Midland, MI (US);
Dow Global Technologies, Inc., Midland, MI (US);
Abstract
A method of reclaiming a titanosilicate from a deactivated or spent oxidation catalyst containing a titanosilicate having deposited thereon one or more catalytic metals, such as gold, and optionally, one or more promoter metals, the method involving treating the deactivated catalyst with an oxidant; contacting the oxidant-treated catalyst with acid, preferably aqua regia; washing the titanosilicate to remove residual acid; and optionally drying and/or calcining. A method of reconstituting an active oxidation catalyst from a spent or deactivated oxidation catalyst, the method involving reclaiming the titanosilicate as noted above, and then depositing one or more catalytic metals and, optionally, one or more promoter metals onto the reclaimed titanosilicate.