Zinc oxide-based sorbents and processes for preparing and using same
Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents contain an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl.sub.2 O.sub.4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, containing a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States); Research Triangle Inst., Research Triangle Park, NC (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC26-99FT40675
- Assignee:
- Research Triangle Institute (Research Triangle Park, NC)
- Patent Number(s):
- 6,951,635
- Application Number:
- 10/670,206
- OSTI ID:
- 1175517
- Resource Relation:
- Patent File Date: 2003 Sep 26
- Country of Publication:
- United States
- Language:
- English
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