Claims
- 1. A hydrotreating catalyst having an improved catalyst life, comprising:
- a catalytically effective amount of nickel and molybdenum supported on an alumina support having a total porosity of at least 0.5 cc/g and a pore size distribution of from 0.25 to 0.40 cc/g of pores with a diameter of less than 250 .ANG., 0.10 to 0.25 cc/g of pores with a diameter of from 250-500 .ANG., from 0.20 to 0.30 cc/g of pores with a diameter of from 500-1500 .ANG., from 0.05 to 0.15 cc/g of pores with a diameter of from 1500-4000 .ANG., and from 0.03 to 0.10 cc/g of pores with a diameter of greater than 4000 .ANG., said catalyst comprised of nickel and molybdenum supported on alumina having been prepared with calcining at a temperature of from 1150 F. to 1300 F.
- 2. The catalyst of claim 1 wherein the catalyst includes from 1% to 6% of nickel and from 5% to 16% of molybdenum, by weight.
- 3. The catalyst of claim 2 wherein the said temperature of calcining is from 1150.degree. to 1250.degree. F.
- 4. The catalyst of claim 2 wherein the total porosity is from 0.75 to 0.95 cc/g.
- 5. The catalyst of claim 4 wherein the alumina is gamma-alumina.
- 6. The catalyst of claim 2 wherein the catalyst further includes a catalytically effective amount of cobalt.
- 7. The catalyst of claim 1 wherein the surface area of the catalyst is at least 125 m.sup.2 /g.
- 8. The catalyst of claim 7 wherein the surface area of the catalyst is from 150-300 m.sup.2 /g.
- 9. The catalyst of claim 1 wherein there is from 0.34 to 0.36 cc/g of pores of a diameter of less than 250 .ANG., from 0.14 to 0.15 cc/g of pores with a diameter of from 250 to 500 .ANG., from 0.22 to 0.23 cc/g of pores with a diameter of from 500-1500 .ANG., from 0.10 to 0.11 cc/g of pores having a diameter of from 1500 to 4000 .ANG., and from 0.04 to 0.07 cc/g of pores with a diameter of greater than 4000 .ANG..
Parent Case Info
This is a continuation of application Ser. No. 208,948, filed Nov. 21, 1980 now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3242101 |
Erickson et al. |
Mar 1966 |
|
3505209 |
Brewer et al. |
Apr 1970 |
|
3525684 |
O'Hara |
Aug 1970 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
208948 |
Nov 1980 |
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