Claims
- 1. A modified mordenite zeolite catalyst prepared in accordance with the following steps:
- (a) providing a mordenite zeolite catalyst having an Si:Al ratio of about between 5:1 to 50:1;
- (b) modifying the mordenite zeolite catalyst by incorporating Pt in an amount of about between 0.5 to 1.5% by weight into the mordenite zeolite catalyst;
- (c) reducing the Pt incorporated catalyst in the presence of hydrogen to convert substantially all of the Pt to metallic form; and
- (d) thereafter further modifying the Pt-modified mordenite zeolite catalyst by incorporating into the Pt-modified zeolite catalyst a promoter selected from the group consisting of Zn, Sn, Cr and mixtures thereof in an amount of about between 0.5 to 1.5% by wt;
- said catalyst comprising a mordenite zeolite catalyst having a Si:Al ratio of about between 5:1 to 50:1, 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.
Parent Case Info
This is a division of application Ser. No. 08,353,812 filed Dec. 12, 1994, now abandoned, which is a division 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 |
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Divisions (2)
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Number |
Date |
Country |
Parent |
353812 |
Dec 1994 |
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Parent |
181770 |
Jan 1994 |
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