Additives for metal contaminant removal
The present invention is directed to catalytic cracking additives comprising a metals trapping material; and a high activity catalyst. The present invention is directed to processes for the catalytic cracking of feedstock comprising contacting said feedstock under catalytic cracking conditions with a composition comprising a bulk catalyst and a catalytic cracking additive, wherein the catalytic cracking additive comprises a metals trapping material; and a high activity catalyst. The invention is also directed to processes for increasing the performance of a bulk catalyst in the presence of at least one metal comprising contacting a feedstock with a catalytic cracking additive comprising a metals trapping material; and a high activity catalyst.
1. A process for the catalytic cracking of feedstock comprising contacting said feedstock under catalytic cracking conditions with a composition comprising a bulk catalyst, wherein the bulk catalyst has a surface area of less than about 300 m 2 /g, and a catalytic cracking additive, wherein the catalytic cracking additive comprises:
a) a metals trapping material; and
b) a high activity catalyst, wherein the high activity catalyst has a surface area of greater than about 350 m 2 /g.
2. The process of claim 1 , wherein the composition comprises from about 2% to about 80% of the catalytic cracking additive by weight.
3. The process of claim 1 , wherein the composition comprises from about 20% to about 60% of the catalytic cracking additive by weight.
4. The process of claim 1 , wherein the composition comprises from about 5% to about 20% of the catalytic cracking additive by weight.
5. The process of claim 1 , wherein the additive comprises from about 2% to about 98% of the metals trapping material by weight.
6. The process of claim 1 , wherein the additive comprises from about 60% to about 95% of he metals trapping material by weight.
7. The process of claim 1 , wherein the additive comprises from about 70% to about 90% of the metals trapping material by weight.
8. The process of claim 1 , wherein the additive comprises from about 5% to about 40% of the high activity catalyst by weight.
9. The process of claim 1 , wherein the metals trapping material and the high activity catalyst comprise separate particles.
10. The process of claim 1 , wherein the metals trapping material and the high activity catalyst are within the same particle.
11. The process of claim 1 , wherein the metals trapping material comprises a calcium-containing compound, a magnesium-containing compound, or a combination thereof.
12. The process of claim 1 , wherein the metals trapping material comprises a non-anionic magnesium- and aluminum-containing compound that has not been derived from a hydrotalcite-like compound, a hydrotalcite-like compound, a silica- and alumina-containing compound, or a combination thereof.
13. The process of claim 1 , wherein the high activity catalyst comprises a zeolite.
14. The process of claim 1 , wherein the high activity catalyst comprises an in situ-synthesized zeolite.
15. The process of claim 13 , wherein the zeolite is zeolite X, Y zeolite, zeolite A, zeolite L, zeolite ZK-4, beta zeolite, ZSM-5 zeolite, faujasite, or a combination thereof.
16. The process of claim 13 , wherein the zeolite is Y zeolite, beta zeolite, or a combination thereof.
17. The process of claim 1 , wherein the metals trapping material is a vanadium trapping material.
18. The process of claim 1 , wherein the bulk catalyst is about 5% to about 40% zeolite.