Invention Grant
- Patent Title: Surface-modified zeolites and methods for preparing the same
- Patent Title (中): 表面改性沸石及其制备方法
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Application No.: US13938634Application Date: 2013-07-10
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Publication No.: US08748333B2Publication Date: 2014-06-10
- Inventor: Laszlo T. Nemeth , Feng Xu
- Applicant: UOP LLC
- Applicant Address: US IL Des Plaines
- Assignee: UOP LLC
- Current Assignee: UOP LLC
- Current Assignee Address: US IL Des Plaines
- Agent Mark Goldberg
- Main IPC: B01J29/06
- IPC: B01J29/06

Abstract:
Surface-modified zeolites and methods for preparing surface-modified zeolites are provided. A hybrid polymer formed from a silicon alkoxide and a metal alkoxide, a co-monomer, or both, is contacted with a zeolite suspension. The zeolite suspension comprises a sodium-, an ammonium-, or a hydrogen-form zeolite and a solvent. The hybrid polymer and zeolite suspension are contacted under conditions sufficient to deposit hybrid polymer on external surfaces of the zeolite to form a treated zeolite. Solvent is removed therefrom. The treated zeolite is dried and calcinated to form a dried and calcinated treated zeolite. Forming of the zeolite suspension and the contacting, removing, drying, and calcinating steps are provided in one selectivation sequence to produce a surface-modified zeolite from the ammonium-form zeolite and the hydrogen-form zeolite. If the dried and calcinated treated zeolite is a sodium-form zeolite, the sodium is exchanged with ammonium and then additionally dried and calcinated.
Public/Granted literature
- US20130296160A1 SURFACE-MODIFIED ZEOLITES AND METHODS FOR PREPARING THE SAME Public/Granted day:2013-11-07
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