Catalyst for low temperature slurry bed Fischer-Tropsch synthesis

US9669390B2 · kind B2 · utility

Assignee

• RES USA, LLC · US

Inventors

• Dawid J. Duvenhage · Bryan, US
• Christine Schmidt · Berlin, DE
• Mark Still · Frederick, US
• Khalid Azzam · Rua Engenheiro Marcondes Ferraz, US
• Karl Kharas · Tulsa, US
• Sara Hunegnaw · Denver, US
• Olga Ionkina · Boulder, US
• Ray J. Huang · Denver, US
• Harold A. Wright · Longmont, US

Key dates

• Filing date: Feb 11, 2014
• Grant date: Jun 6, 2017
• Expiry date: Feb 11, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2235/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

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.