发明授权
- 专利标题: Composite hierarchical zeolite catalyst for heavy reformate conversion to xylenes
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申请号: US15958394申请日: 2018-04-20
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公开(公告)号: US11097262B2公开(公告)日: 2021-08-24
- 发明人: Veera Venkata Ramakrishna Tammana , Raed Hasan Abudawoud , Ahmad A. Jazzar , Ahmad Al Mahdi , Thamer A. Mohammad
- 申请人: Saudi Arabian Oil Company
- 申请人地址: SA Dhahran
- 专利权人: Saudi Arabian Oil Company
- 当前专利权人: Saudi Arabian Oil Company
- 当前专利权人地址: SA Dhahran
- 代理机构: Dinsmore & Shohl LLP
- 主分类号: B01J29/04
- IPC分类号: B01J29/04 ; B01J37/00 ; B01J37/02 ; B01J37/08 ; B01J35/02 ; B01J35/10 ; B01J29/22 ; B01J29/44 ; B01J29/48 ; C10G35/06 ; B01J29/26 ; C01B39/02 ; B01J29/46 ; C07C6/12 ; B01J37/18 ; C07C15/08 ; C07C15/06 ; B01J29/24 ; C07C15/04 ; B01J29/80 ; B01J29/70
摘要:
A method of producing a hierarchical zeolite composite catalyst. The method including dissolving, in an alkaline solution and in the presence of a surfactant, a catalyst precursor comprising mesoporous zeolite to yield a dissolved zeolite solution, where the mesoporous zeolite comprises large pore mordenite and medium pore ZSM-5. The method also including condensing the dissolved zeolite solution to yield a solid zeolite composite from the dissolved zeolite solution and heating the solid zeolite composite to remove the surfactant. The method further including impregnating the solid zeolite composite with one or more active metals selected from the group consisting of molybdenum, platinum, rhenium, nickel, and combinations thereof to yield impregnated solid zeolite composite and calcining the impregnated solid zeolite composite to produce the hierarchical zeolite composite catalyst. The hierarchical zeolite composite catalyst has a mesostructure comprising at least one disordered mesophase and at least one ordered mesophase.
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