Claims
- 1. Process for hydroisomerizing n-paraffins containing more than 15 carbon atoms, characterized in that the n-paraffin, or a mixture of n-paraffins, is brought into contact, under hydroisomerization conditions, with a bifunctional catalyst comprising:
- (a) a carrier of acidic character constituted by silica-alumina gel, amorphous as determined by X-ray analysis, with a molar ratio of SiO.sub.2 :Al.sub.2 O.sub.3 comprised within the range of from 30:1 to 500:1, a surface area comprised within the range of from 500 to 1,000 m.sup.2 /g, with a porosity comprised within the range of from 0.3 to 0.6 ml/g, with a diameter of pores comprised within the range of from 10 to 30 .ANG.;
- (b) one or more metals belonging to Group VIIIA, in amounts comprised within the range of from 0.05 to 5% by weight.
- 2. Process for hydroisomerizing n-paraffin according to claims 1, characterized in that said process is carried out in the presence of an amount of bifunctional catalyst comprised within the range of from 0.5 to 30% by weight, based on n-paraffins, at a temperature comprised within the range of from 200.degree. to 540.degree. C., and under a hydrogen pressure comprised within the range of from atmospheric pressure up to 25,000 kPa.
- 3. Process according to claim 2, characterized in that it is carried out in the presence of a bifunctional catalyst used in an amount comprised within the range of from 1 to 15% by weight based on n-paraffins, at a temperature comprised within the range of from 250.degree. to 450.degree. C., and under a hydrogen pressure comprised within the range of from 4,000 to 10,000 kPa.
Priority Claims (1)
Number |
Date |
Country |
Kind |
MI92A/1895 |
Jul 1992 |
ITX |
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Parent Case Info
This is a division of application Ser. No. 08/099,650 filed on Jul. 30, 1993 now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5049536 |
Bellussi et al. |
Sep 1991 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
99650 |
Jul 1993 |
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