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A composition that comprises a support material having incorporated therein a metal component and impregnated with both hydrocarbon oil and a polar additive. The composition that is impregnated with both hydrocarbon oil and polar additive is useful in the hydrotreating of hydrocarbon feedstocks, and

A composition that comprises a support material having incorporated therein a metal component and impregnated with both hydrocarbon oil and a polar additive. The composition that is impregnated with both hydrocarbon oil and polar additive is useful in the hydrotreating of hydrocarbon feedstocks, and it is especially useful in applications involving delayed feed introduction whereby the composition is first treated with hot hydrogen, and, optionally, with a sulfur compound, prior to contacting it with a hydrocarbon feedstock under hydrodesulfurization process conditions.

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1. A method of making a composition, wherein said method comprises: incorporating a metal-containing solution into a support material to provide a metal-incorporated support material;drying said metal-incorporated support material so that it contains a volatiles content in the range of from 2 to 20

1. A method of making a composition, wherein said method comprises: incorporating a metal-containing solution into a support material to provide a metal-incorporated support material;drying said metal-incorporated support material so that it contains a volatiles content in the range of from 2 to 20 wt. % LOI;incorporating hydrocarbon oil and a polar additive having a dipole moment of at least 0.45 into said metal-incorporated support material to thereby provide an oil and additive impregnated composition having a weight ratio of said hydrocarbon oil to said polar additive in the range upwardly to 10:1, wherein said polar additive has a boiling point in the range of from 50° C. to 275° C.; and,contacting said oil and additive impregnated composition under suitable hydrogen treatment conditions with hydrogen to thereby provide a hydrogen-treated composition. 2. A method as recited in claim 1, wherein said polar additive is selected from a heterocompound group consisting of heterocompounds. 3. A method as recited in claim 2, wherein said heterocompound group excludes sulfur-containing compounds. 4. A method as recited in claim 2, wherein said heterocompound group excludes paraffin and olefin hydrocarbon compounds. 5. A method as recited in claim 1, wherein said hydrocarbon oil comprises hydrocarbons having a boiling temperature in the range of from 100° C. to 550° C. and are selected from hydrocarbon mixtures of the group consisting of heavy naphtha, kerosene, diesel, gas oil, olefins having carbon numbers in the range of from 12 to 40 carbons, and mixtures of alpha olefins having carbon numbers in the range of from 18 to 30. 6. A method as recited in claim 1, wherein said metal containing solution is an aqueous solution of a metal salt of a metal compound that includes a Group 9 and Group 10 metal component selected from the group consisting of cobalt and nickel, and wherein said Group 9 and Group 10 metal component is present in said composition in an amount in the range of from 0.5 wt. % to 20 wt. %. 7. A method as recited in claim 6, wherein said metal compound further includes a Group 6 metal component selected from the group consisting of molybdenum and tungsten, and wherein said Group 6 metal component is present in said composition in an amount in the range of from 5 wt. % to 50 wt. %. 8. A method of making a composition, wherein said method comprises: incorporating a metal-containing solution into a support material to provide a metal-incorporated support material;drying said metal-incorporated support material so as to contain volatiles in the range of from 2 to 20 wt. % LOI;incorporating hydrocarbon oil and a polar additive having a dipole moment of at least 0.45 into said metal-incorporated support material to thereby provide an oil and additive impregnated composition having a weight ratio of said hydrocarbon oil to said polar additive in the range upwardly to 10:1 wherein said hydrocarbon oil comprises hydrocarbons having a boiling temperature in the range of from 100° C. to 550° C. and are selected from hydrocarbon mixtures of the group consisting of heavy naphtha, kerosene, diesel, gas oil, olefins having carbon numbers in the range of from 12 to 40 carbons, and mixtures of alpha olefins having carbon numbers in the range of from 18 to 30; and,contacting said oil and additive impregnated composition under suitable hydrogen treatment conditions with hydrogen to thereby provide a hydrogen-treated composition. 9. A method of making a composition, wherein said method comprises: incorporating a metal-containing solution into a support material to provide a metal-incorporated support material, wherein said metal containing solution is an aqueous solution of a metal salt of a metal compound that includes a Group 9 and Group 10 metal component selected from the group consisting of cobalt and nickel, and wherein the amount of said Group 9 and Group 10 metal component incorporated into said support material is such as to provide in said composition an amount of said Group 9 and Group 10 metal component in the range of from 0.5 wt. % to 20 wt. %;drying said metal-incorporated support material so that it contains a volatiles content in the range of from 2 to 20 wt. % LOI;incorporating hydrocarbon oil and a polar additive having a dipole moment of at least 0.45 into said metal-incorporated support material to thereby provide an oil and additive impregnated composition having a weight ratio of said hydrocarbon oil to said polar additive in the range upwardly to 10:1; and,contacting said oil and additive impregnated composition under suitable hydrogen treatment conditions with hydrogen to thereby provide a hydrogen-treated composition. 10. A method as recited in claim 9, wherein said metal compound further includes a Group 6 metal component selected from the group consisting of molybdenum and tungsten, and wherein the amount of said Group 6 metal component incorporated into said support material is such as to provide in said composition an amount of said Group 6 metal component in the range of from 5 wt. % to 50 wt. %. 11. A method as recited in claim 9, wherein said hydrocarbon oil comprises hydrocarbons having a boiling temperature in the range of from 100° C. to 550° C. and can be selected from hydrocarbon mixtures of the group consisting of heavy naphtha, kerosene, diesel, gas oil, olefins having carbon numbers in the range of from 12 to 40 carbons, and mixtures of alpha olefins having carbon numbers in the range of from 18 to 30.