FCC catalyst additive with mixed alumina
AssigneeKetjen Limited Liability Company
InventorsEdward Lee Foster, Maria Margaret Ludvig, Kevin Alfonso Miller
Life of this patent
Estimating the term…
Abstract
Provided is a Fluid Catalytic Cracking catalyst additive composition and method of making the same. The catalyst additive composition comprises zeolite about 35 wt % to about 80 wt %, preferably about 40 wt % to about 70 wt %; silica about 0 wt % to about 10 wt %, preferably about 2 wt % to about 10 wt %; about 10.5 wt % to 20 wt % alumina and about 7 wt % to 20 wt % P2O5, preferably about 11 wt % to about 18 wt %, and the balance clay which can fall between 0 and 50 wt %. The alumina is typically derived from more than one source, such as at least an amorphous or small crystallite size pseudo-boehmite alumina and then either a large crystallite size alumina or other reactive alumina.
Claims14
An FCC additive composition comprising:
- a. about 35 wt % to about 80 wt % zeolite;
- b. about 0 wt % to about 10 wt % of silica binder;
- c. about 7 wt % to about 20 wt % P2O5;
- d. about 10.5 wt % to about 20 wt % alumina that comprises at least one large crystallite alumina having an average crystallite size of about 25 nm or greater and at least one small crystallite alumina having an average crystallite size from about 4 nm to about 5 nm;
- e. the balance clay.
An FCC additive composition comprising:
- a. about 35 wt % to about 80 wt % zeolite;
- b. about 0 wt % to about 10 wt % of silica binder;
- c. about 7 wt % to about 20 wt % P2O5;
- d. about 10.5 wt % to about 20 wt % alumina that comprises two different sources of alumina comprising at least one large crystallite alumina having an average crystallite size of about 25 nm or greater and at least one small crystallite alumina having an average crystallite size from about 4 nm to about 5 nm;
- e. the balance clay;
- wherein the ratio of the P2O5 to the at least one small crystallite alumina is greater than about 1.7.
Dependencies are inferred from the claim text.