Claims
- 1. A process for the simultaneous dehydrogenation and isomerization of paraffins to isoparaffins and isoolefins comprising the steps of:
- providing a reactor;
- locating a mordenite zeolite catalyst comprising a mordenite zeolite catalyst having a Si:Al ratio of about between 5:1 to 10:1, Pt in an amount of about between 0.1 to 1.5% by weight wherein the Pt is present in metallic form and a promoter in an amount of about 0.1 to 1.5% by weight wherein the promoter is selected from the group consisting of Zn, Sn, Cr and mixtures thereof in the reactor;
- activating the catalyst; and
- contacting the catalyst with a paraffin in the reactor in the presence of hydrogen under the following conditions:
- (1) paraffin space velocity of about between 0.1 to 1000.sup.-1 ;
- (2) a hydrogen to paraffin ratio of about between 0.1 to 30; and
- (3) a temperature of about between 250.degree. to 800.degree. C.
- 2. A process according to claim 1 including activating the catalyst under the following conditions prior to contacting the catalyst with the paraffin:
- (a) in the presence of hydrogen
- (b) at a temperature of 200.degree. to 800.degree. C.;
- (c) for at least 1 hour.
- 3. A process according to claim 1 wherein the paraffin is selected from the group consisting of n-butane, n-pentane, isobutane and isopentane.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of application Ser. No. 08/902,186 filed Jul. 29, 1997, now U.S. Pat. No. 5,821,188, which is a continuation of application Ser. No. 08/554,606 filed Nov. 6, 1995, now U.S. Pat. No. 5,658,839, which in turn is a divisional of application Ser. No. 08/353,812 filed Dec. 12, 1994, now abandoned, which in turn is a divisional of application Ser. No. 08/181,770 filed Jan. 21, 1994, now U.S. Pat. No. 5,416,052.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5242576 |
Schmidt et al. |
Sep 1993 |
|
Divisions (3)
|
Number |
Date |
Country |
Parent |
902186 |
Jul 1997 |
|
Parent |
353812 |
Dec 1994 |
|
Parent |
181770 |
Jan 1994 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
544606 |
Nov 1995 |
|