초록 ▼

A catalyst for use in a Fischer-Tropsch synthesis reaction which comprises cobalt supported on alumina, in which: the catalyst average particle size is in the range 20 to 100 μm; the specific surface area of the impregnated and calcined catalyst particles is greater than 80 m2/g; the average pore si

A catalyst for use in a Fischer-Tropsch synthesis reaction which comprises cobalt supported on alumina, in which: the catalyst average particle size is in the range 20 to 100 μm; the specific surface area of the impregnated and calcined catalyst particles is greater than 80 m2/g; the average pore size of the impregnated and calcined catalyst is at least 90 Å (9 nm); and the pore volume of the impregnated and calcined catalyst is greater than 0.35 cm3/g.

대표청구항 ▼

1. An impregnated and calcined Fischer-Tropsch catalyst for use in a Fischer-Tropsch synthesis reaction, the impregnated and calcined Fischer-Tropsch catalyst comprising cobalt supported on alumina, in which: the impregnated and calcined Fischer-Tropsch catalyst average particle size is in the range

1. An impregnated and calcined Fischer-Tropsch catalyst for use in a Fischer-Tropsch synthesis reaction, the impregnated and calcined Fischer-Tropsch catalyst comprising cobalt supported on alumina, in which: the impregnated and calcined Fischer-Tropsch catalyst average particle size is in the range 20 to 100 μm; the specific surface area of the impregnated and calcined Fischer-Tropsch catalyst particles is greater than 120 m2/g; the average pore size of the impregnated and calcined Fischer-Tropsch catalyst is at least 110 Å (11 nm); the pore volume of the impregnated and calcined Fischer-Tropsch catalyst is at least 0.45 cm3/g; and the cobalt content of the impregnated and calcined Fischer-Tropsch catalyst is from 15 to 40% by weight. 2. A catalyst as claimed in claim 1, in which the specific surface area of the impregnated and calcined catalyst particles is in the range 120 to 220 m2/g. 3. A catalyst as claimed in claim 1, in which the particle size range is 40 to 80 μm. 4. A catalyst as claimed in claim 1, in which the average pore size of the impregnated and calcined catalyst is at least 130 Å (13 nm). 5. A catalyst as claimed in claim 1, incorporating less than 3% by weight of a promoter. 6. A catalyst as claimed in claim 5, in which the promoter is rhenium or platinum. 7. A catalyst as claimed in claim 1, in which the support material is γ-alumina. 8. A catalyst as claimed in claim 7, in which the γ-alumina is stabilised with a stabilising agent. 9. A catalyst as claimed in claim 8, in which the y-alumina is stabilised with lanthanum. 10. A catalyst as claimed in claim 1, in which the alumina support includes a binder. 11. A catalyst as claimed in claim 10, in which the binder represents less than 25% by weight of the catalyst. 12. A catalyst as claimed in claim 10, in which the binder is an alumina-containing binder material. 13. A catalyst as claimed in claim 1, in which the specific surface area of the prepared catalyst, comprising the cobalt in an active catalytic form on the support, is in the range 125 to 160 m2/g. 14. A catalyst as claimed in claim 1, in which the cobalt content is from 15 to 25% by weight.