| US 7,585,489 B2 | ||
| Catalytic naphtha cracking catalyst and process | ||
| Hayim Abrevaya, Kenilworth, Ill. (US); Suheil F. Abdo, Lincolnshire, Ill. (US); and R. Lyle Patton, Surprise, Ariz. (US) | ||
| Assigned to UOP LLC, Des Plaines, Ill. (US) | ||
| Filed on Aug. 27, 2008, as Appl. No. 12/198,911. | ||
| Application 12/198911 is a division of application No. 10/990803, filed on Nov. 17, 2004, granted, now 7,446,071. | ||
| Application 10/990803 is a division of application No. 10/246801, filed on Sep. 17, 2002, granted, now 6,867,341. | ||
| Prior Publication US 2008/0318764 A1, Dec. 25, 2008 | ||
| Int. Cl. C01B 39/02 (2006.01); C01B 39/44 (2006.01); B01J 29/06 (2006.01); B01J 29/65 (2006.01); B01J 29/70 (2006.01) | ||
| U.S. Cl. 423—700 [502/60; 502/77] | 7 Claims |
| 1. A zeolite for selectively producing ethylene and propylene from naphtha comprising:
a crystal structure having substantially non-intersecting 10 membered ring channels with a dimension from about 0.1 micrometers
to about 0.3 micrometers in the direction of the channels;
elliptical pores within the crystal structure wherein the elliptical pores are defined such that the pore index is greater
than 22 Å2 and less than 30 Å2;
wherein the zeolite has a silicon to aluminum ratio from about 20 to about 200; and
the zeolite is characterized by hydrothermal stability up to a temperature of about 700° C.
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