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AssigneeDalian Institute of Chemical Physics
InventorsYunjie Ding, Wenping Ma, Liwu Lin
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Diesel fuels or blending stocks having high cetane number are produced from non-shifting Fischer-Tropsch processes, which directly convert carbon monoxide and hydrogen to diesel distillates over activated carbon supported cobalt based Fischer-Tropsch catalysts. The activated carbon supported cobalt based catalysts comprise a substantially high dispersion of at least one of a zirconium component, an cerium component, a ruthenium component or a potassium component in porous carbon and elemental cobalt either deposited thereon or substantially uniformly dispersed therein, wherein the concentration of activated carbon in the catalyst is from about 20 to about 90 percent by weight, based on the weight of the catalyst, the concentration of elemental cobalt in the catalyst is from about 4 to about 50 percent by weight, based on the weight of the catalyst, the total concentration of the zirconium component, the cerium component, or a combination thereof in the catalyst is from about 0.01 to about 20 percent by weight, based on the weight of the catalyst and calculated as the elemental metal or metals, and the total concentration of the ruthenium component, the potassium component, or a combination thereof in the catalyst is from about 0.01 to about 5.0 percent by weight, based on the weight of the catalyst and calculated as the elemental metal or metals. Activated carbon carrier has a surface area in the range of about 200-2000 m2/g, preferably 800-1500 m2/g, and a pore volume of 0.3 to 2.0 ml/g, preferably 0.35 to 0.75 ml/g, a distribution of pore diameter of 4 to 1000 Å, preferably 5 to 500 Å.
An activated carbon supported cobalt based catalyst, comprising a substantially high dispersion of at least one of a zirconium component, an cerium component, a ruthenium component or potassium component in a porous carbon matrix and elemental cobalt either deposited thereon or substantially uniformly dispersed therein, wherein the concentration of activated carbon in the catalyst is from 20 to 90 percent by weight, based on the weight of the catalyst, the concentration of elemental cobalt in the catalyst is from 1 to 50 percent by weight, based on the weight of the catalyst, the total concentration of the zirconium component, the cerium component, the ruthenium component, the potassium component, or a combination thereof in the catalyst is from 0.1 to 40 percent by weight, based on the weight of the catalyst and calculated as the elemental metal or metals, and each of the zirconium, cerium, ruthenium or potassium components that is present is in the form of the elemental metal, its oxide or a combination thereof.
A method for direct synthesis of diesel distillates with paraffins having carbon numbers less than 25 as principal distillates from a synthesis gas through a Fischer-Tropsch synthesis, comprising:
Dependencies are inferred from the claim text.