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Title: Process for preparing zinc oxide-based sorbents

Abstract

The disclosure relates to zinc oxide-based sorbents, and processes for preparing and using them. 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]
  1. Cary, NC
  2. Durham, NC
Issue Date:
Research Org.:
Research Triangle Institute (Research Triangle Park, NC)
Sponsoring Org.:
USDOE
OSTI Identifier:
1019117
Patent Number(s):
7956006
Application Number:
US Patent Application 11/771,396
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
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC26-99FT40675
Resource Type:
Patent
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. Process for preparing zinc oxide-based sorbents. United States: N. p., 2011. Web.
Gangwal, Santosh Kumar, Turk, Brian Scott, & Gupta, Raghubir Prasad. Process for preparing zinc oxide-based sorbents. United States.
Gangwal, Santosh Kumar, Turk, Brian Scott, and Gupta, Raghubir Prasad. Tue . "Process for preparing zinc oxide-based sorbents". United States. https://www.osti.gov/servlets/purl/1019117.
@article{osti_1019117,
title = {Process for preparing zinc oxide-based sorbents},
author = {Gangwal, Santosh Kumar and Turk, Brian Scott and Gupta, Raghubir Prasad},
abstractNote = {The disclosure relates to zinc oxide-based sorbents, and processes for preparing and using them. 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 = {2011},
month = {6}
}

Patent:

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