发明授权
- 专利标题: Highly active and highly selective aromatization catalyst
- 专利标题(中): 高活性和高选择性芳构化催化剂
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申请号: US724146申请日: 1985-04-17
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公开(公告)号: US4699894A公开(公告)日: 1987-10-13
- 发明人: Donald S. Santilli , John J. Long , Robert T. Lewis
- 申请人: Donald S. Santilli , John J. Long , Robert T. Lewis
- 申请人地址: CA San Francisco
- 专利权人: Chevron Research Company
- 当前专利权人: Chevron Research Company
- 当前专利权人地址: CA San Francisco
- 主分类号: B01J29/00
- IPC分类号: B01J29/00 ; B01J29/068 ; B01J29/08 ; B01J29/10 ; B01J29/62 ; B01J29/63 ; B01J29/89 ; C10G35/095 ; B01J29/30
摘要:
A highly selective zeolitic reforming catalyst is disclosed that contains a promoter selected from the group consisting of iron, cobalt, and titanium; and that has a platinum to promoter weight ratio of less than 10:1. In one embodiment a type L zeolite is formed by combining an aqueous solution of potassium hydroxide, aluminum hydroxide, and ferric nitrate with an aqueous solution of silica to form a thickening gel in a mother liquor; heating the thickening gel to form a type L zeolite; cooling the solution containing the type L zeolite; decanting the mother liquor from the solution; filtering the type L zeolite from the solution; washing the filtered type L zeolite so that the pH of the wash is about 101/2; and drying the washed type L zeolite. The catalyst is formed by adding platinum to the dried type L zeolite by pore fill impregnation with an aqueous solution of Pt(NH.sub.3).sub.4 (NO.sub.3).sub.2 to form a catalyst; drying the catalyst and calcining the catalyst.
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