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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 composition, comprising: a support material that is loaded with an active metal precursor, a hydrocarbon oil, and a polar additive having a dipole moment of at least 0.45, wherein the weight ratio of said hydrocarbon oil to polar additive is in the range upwardly to 10:1, and wherein said suppo

1. A composition, comprising: a support material that is loaded with an active metal precursor, a hydrocarbon oil, and a polar additive having a dipole moment of at least 0.45, wherein the weight ratio of said hydrocarbon oil to polar additive is in the range upwardly to 10:1, and wherein said support material is thereafter treated with a gas comprising hydrogen. 2. A composition as recited in claim 1, wherein said polar additive has a boiling point in the range of from 50° C. to 275° C. 3. A composition as recited in claim 2, wherein said polar additive is selected from a heterocompound group consisting of heterocompounds. 4. A composition as recited in claim 3, wherein said heterocompound group excludes sulfur-containing compounds. 5. A composition as recited in claim 4, wherein said heterocompound group excludes paraffin and olefin hydrocarbon compounds. 6. A composition as recited in claim 5, 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, mixtures of alpha olefins having carbon numbers in the range of from 18 to 30. 7. A composition as recited in claim 6, wherein said active metal precursor is 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. %. 8. A composition as recited in claim 7, 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. %. 9. A composition as recited in claim 8, wherein said support material treated with hydrogen is thereafter treated with a sulfur compound. 10. A composition, comprising: a support material containing a metal component of a metal salt solution, hydrocarbon oil, and a polar additive having a dipole moment of at least 0.45, wherein the weight ratio of said hydrocarbon oil to polar additive is in the range upwardly to 10:1. 11. A composition as recited in claim 10, wherein said support material containing said metal component, said hydrocarbon oil and said polar additive is further treated with hydrogen. 12. A composition as recited in claim 11, wherein said support material containing said metal component, said hydrocarbon oil and said polar additive is further treated with hydrogen is further treated with a sulfur compound. 13. A composition as recited in claim 12, wherein said polar additive has a boiling point in the range of from 50° C. to 275° C. 14. A composition as recited in claim 13, wherein said polar additive is selected from a heterocompound group consisting of heterocompounds. 15. A composition as recited in claim 14, wherein said heterocompound group excludes sulfur-containing compounds. 16. A composition as recited in claim 15, wherein said heterocompound group excludes paraffin and olefin hydrocarbon compounds. 17. A composition as recited in claim 16, 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, mixtures of alpha olefins having carbon numbers in the range of from 18 to 30. 18. A composition as recited in claim 17, wherein said metal component 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. %. 19. A composition as recited in claim 18, wherein said metal component 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. %. 20. 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; andincorporating 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 polar additive is in the range upwardly to 10:1. 21. A method as recited in claim 20, further comprising: contacting said oil and additive impregnated composition under suitable hydrogen treatment conditions with hydrogen to thereby provide a hydrogen-treated composition. 22. A method as recited in claim 21, wherein prior to said incorporating of said hydrocarbon oil and said polar additive into said metal-incorporated support material, said metal-incorporated support material is dried so as to contain a volatiles content in the range of from 3 to 20 wt. % LOI. 23. A process, comprising: contacting under hydrodesulfurization process conditions a hydrocarbon feedstock with any one of the compositions of claims 1 through 19.