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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. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise 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.2O.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, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.

Inventors:
 [1];  [2];  [2]
+ Show Inventor Affiliations
  1. Cary, NC
  2. Durham, NC
Issue Date:
Research Org.:
Research Triangle Institute (Research Triangle Park, NC)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014473
Patent Number(s):
7682423
Application Number:
US Patent Application 11/771,364
Assignee:
Research Triangle Institute (Research Triangle Park, NC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
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DOE Contract Number:  
AC26-99FT40675
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Gangwal, Santosh Kumar, Turk, Brian Scott, and Gupta, Raghubir Prasael. Zinc-oxide-based sorbents and processes for preparing and using same. United States: N. p., 2010. Web.
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Gangwal, Santosh Kumar, Turk, Brian Scott, & Gupta, Raghubir Prasael. Zinc-oxide-based sorbents and processes for preparing and using same. United States.
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Gangwal, Santosh Kumar, Turk, Brian Scott, and Gupta, Raghubir Prasael. Tue . "Zinc-oxide-based sorbents and processes for preparing and using same". United States. https://www.osti.gov/servlets/purl/1014473.
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@article{osti_1014473,
title = {Zinc-oxide-based sorbents and processes for preparing and using same},
author = {Gangwal, Santosh Kumar and Turk, Brian Scott and Gupta, Raghubir Prasael},
abstractNote = {Zinc oxide-based sorbents, and processes for preparing and using them are provided. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise 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.2O.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, comprising 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 Mar 23 00:00:00 EDT 2010},
month = {Tue Mar 23 00:00:00 EDT 2010}
}
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Works referenced in this record:

Preparation of ZnO–Al2O3 Particles in a Premixed Flame
journal, January 2000

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