Zinc oxide-based sorbents and processes for preparing and using same
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States); Research Triangle Inst., Research Triangle Park, NC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175517
- Patent Number(s):
- 6951635
- Application Number:
- 10/670,206
- Assignee:
- Research Triangle Institute (Research Triangle Park, NC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- AC26-99FT40675
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2003 Sep 26
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Gangwal, Santosh Kumar, Turk, Brian Scott, and Gupta, Raghubir Prasad. Zinc oxide-based sorbents and processes for preparing and using same. United States: N. p., 2005.
Web.
Gangwal, Santosh Kumar, Turk, Brian Scott, & Gupta, Raghubir Prasad. Zinc oxide-based sorbents and processes for preparing and using same. United States.
Gangwal, Santosh Kumar, Turk, Brian Scott, and Gupta, Raghubir Prasad. Tue .
"Zinc oxide-based sorbents and processes for preparing and using same". United States. https://www.osti.gov/servlets/purl/1175517.
@article{osti_1175517,
title = {Zinc oxide-based sorbents and processes for preparing and using same},
author = {Gangwal, Santosh Kumar and Turk, Brian Scott and Gupta, Raghubir Prasad},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {10}
}