Method for producing hydroisomerization catalyst and method for producing lubricant base oil
A method for producing a hydroisomerization catalyst according to the present invention includes: a first step of preparing a catalyst to be treated, which contains a support having a one-dimensional porous structure including a 10-membered ring and at least one metal selected from the group consisting of: group 8 to 10 metals of the periodic table, Mo, and W supported on the hydroisomerization catalyst; and a second step of producing a hydroisomerization catalyst having a carbon content of 0.4 to 2.5% by mass by subjecting the catalyst to be treated to a coking treatment by means of a carbon-containing compound.
1. A method for producing lubricant base oil, wherein the method comprises:
subjecting a catalyst to a coking treatment with a carbon containing compound, the coking treatment being at a temperature of 300° C. to 350° C. to obtain a hydroisomerization catalyst having a carbon content of 0.4% to 2.5% by mass, wherein the catalyst comprises a support having a one-dimensional porous structure including a 10-membered ring and at least one metal selected from the group consisting of group 8 to 10 metals of the periodic table, Mo, and W, supported on the catalyst; and
contacting a hydrocarbon feedstock containing normal paraffins having 10 or more carbon atoms with the hydroisomerization catalyst in the presence of hydrogen at a hydroisomerization temperature of 370° C. to 450° C.
2. The method for producing lubricant base oil according to claim 1 , wherein the catalyst is subjected to a coking treatment by using the hydrocarbon feedstock as the carbon-containing compound.
3. The method for producing lubricant base oil according to claim 1 , wherein the hydrocarbon feedstock is further hydrofinished and vacuum-distilled after the hydrocarbon feedstock is contacted with the hydroisomerization catalyst.
4. The method for producing lubricant base oil according to claim 1 , wherein the hydrocarbon feedstock is at least one selected from the group consisting of: atmospheric residues; vacuum residues; a vacuum gas oil; a slack wax; and a Fischer Tropsch synthetic wax.
5. The method for producing lubricant base oil according to claim 1 , wherein the hydrocarbon feedstock includes a fraction with a boiling point at atmospheric pressure of more than 360° C.
6. The method for producing lubricant base oil according to claim 1 , wherein the hydroisomerization catalyst has a volume of micropores per unit mass of the catalyst of 0.02 to 0.11 cc/g and a volume of micropores per unit mass of a zeolite contained in the catalyst of 0.04 to 0.12 cc/g.
7. The method for producing lubricant base oil according to claim 1 , wherein the hydroisomerization catalyst comprises at least one zeolite selected from the group consisting of: a ZSM-22 zeolite; a ZSM-23 zeolite; an SSZ-32 zeolite; and a ZSM-48 zeolite.
8. A method for producing lubricant base oil, wherein the method comprises:
subjecting a catalyst to a coking treatment with a carbon containing compound, the coking treatment being at a temperature of 300° C. to 350° C. to obtain a hydroisomerization catalyst having a carbon content of 0.4% to 2.5% by mass, wherein the catalyst comprises a support having a one-dimensional porous structure including a 10-membered ring and at least one metal selected from the group consisting of group 8 to 10 metals of the periodic table, Mo, and W, supported on the catalyst; and
contacting a hydrocarbon feedstock containing normal paraffins having 10 or more carbon atoms with the hydroisomerization catalyst in the presence of hydrogen at a hydroisomerization temperature of 370° C. to 450° C., wherein the hydrocarbon feedstock includes a fraction with a boiling point at atmospheric pressure of more than 360° C.