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:
Jan. 12, 2016
Filed:
Apr. 01, 2011
Robert J. Gulotty, Jr., Glendale, AZ (US);
Dean M. Millar, Midland, MI (US);
Albert E. Schweizer, Jr., Port St. Lucie, FL (US);
Raymond M. Collins, Midland, MI (US);
Robert J. Gulotty, Jr., Glendale, AZ (US);
Dean M. Millar, Midland, MI (US);
Albert E. Schweizer, Jr., Port St. Lucie, FL (US);
Raymond M. Collins, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A process for preparing a molybdenum sulfide-based catalyst comprises drying a precipitated molybdenum sulfide-based catalyst precursor, for example, a wet filter cake, such that a particulate catalyst precursor, containing from 12 to 15 percent by weight water, is formed. The particulate catalyst precursor is desirably in the form of free-flowing particles. The particulate catalyst precursor is then auto-reduced. A rotary furnace that subjects the catalyst precursor to at least two zones having distinct temperatures may be conveniently used for drying, auto-reduction, or both. The staged drying and auto-reduction steps reduce the tendency of the precursor to self-heat, which is undesirable because it reduces both the activity and selectivity of the final catalyst.