Catalyst for low temperature slurry bed Fischer-Tropsch synthesis

• Main Authors: Azzam, Khalid, Still, Mark, Kharas, Karl, Wright, Harold A, Hunegnaw, Sara, Duvenhage, Dawid J, Ionkina, Olga, Huang, Ray, Schmidt, Christine
• Format: Patent
• Language: English
• Published: 08.02.2018
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

Herein disclosed is a method for controllably producing a hematite-containing Fischer Tropsch catalyst, the method comprising: (a) 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, wherein the precipitating temperature is less than or equal to about 95'C; wherein the iron nitrate, the precipitating agent solution, or both, comprise a refractory material; (b) holding the precipitate from (a) at a hold temperature for a hold time to provide a hematite containing precipitate; and (c) washing the hematite containing precipitate from (b) via contact with a wash solution and filtering, to provide a washed hematite containing Fischer-Tropsch catalyst. The method may further comprise adding a hematite promoter to control the amount of hematite in the hematite-containing Fischer-Tropsch catalyst. lmSm