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:
Jun. 06, 2017
Filed:
Feb. 11, 2014
Res Usa, Llc, Westminister, CO (US);
Dawid J. Duvenhage, Evergreen, CO (US);
Christine Schmidt, Denver, CO (US);
Mark Still, Frederick, CO (US);
Khalid Azzam, Houston, TX (US);
Karl C. Kharas, South Bound Brook, NJ (US);
Sara Hunegnaw, Denver, CO (US);
Olga Ionkina, Boulder, CO (US);
Ray J. Huang, Plain City, OH (US);
Harold A. Wright, Longmont, CO (US);
RES USA, LLC, Westminister, CO (US);
Abstract
A method for controllably producing a hematite-containing Fischer-Tropsch catalyst by combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases; holding the precipitate from at a hold temperature for a hold time to provide a hematite containing precipitate; and washing the hematite containing precipitate via contact with a wash solution and filtering, to provide a washed hematite containing catalyst. The method may further comprise promoting the washed hematite containing catalyst with a chemical promoter; spray drying the promoted hematite containing catalyst; and calcining the spray dried hematite containing catalyst to provide a calcined hematite-containing Fischer-Tropsch catalyst.