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Title: 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 = {Tue Oct 04 00:00:00 EDT 2005},
month = {Tue Oct 04 00:00:00 EDT 2005}
}