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Title: Device and method for detecting sulfur dioxide at high temperatures

Abstract

The present invention relates to a method for selectively detecting and/or measuring gaseous SO.sub.2 at a temperature of at least 500.degree. C., the method involving: (i) providing a SO.sub.2-detecting device including an oxygen ion-conducting substrate having on its surface at least three electrodes comprising a first, second, and third electrode; (ii) driving a starting current of specified magnitude and temporal variation between the first and second electrodes; (iii) contacting the SO.sub.2-detecting device with the SO.sub.2-containing sample while maintaining the magnitude and any temporal variation of the starting current, wherein said SO.sub.2-containing sample causes a change in the electrical conductance of said device; and (iv) detecting the change in electrical conductance of the device based on measuring an electrical property related to or indicative of the conductance of the device between the first and third electrodes, or between the second and third electrodes, and detecting SO.sub.2 in the SO.sub.2-containing sample based on the measured change in electrical conductance.

Inventors:
 [1];  [1];  [2]
  1. Oak Ridge, TN
  2. Clinton, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1033924
Patent Number(s):
8048682
Application Number:
12/111,641
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

West, David L, Montgomery, Frederick C, and Armstrong, Timothy R. Device and method for detecting sulfur dioxide at high temperatures. United States: N. p., 2011. Web.
West, David L, Montgomery, Frederick C, & Armstrong, Timothy R. Device and method for detecting sulfur dioxide at high temperatures. United States.
West, David L, Montgomery, Frederick C, and Armstrong, Timothy R. Tue . "Device and method for detecting sulfur dioxide at high temperatures". United States. https://www.osti.gov/servlets/purl/1033924.
@article{osti_1033924,
title = {Device and method for detecting sulfur dioxide at high temperatures},
author = {West, David L and Montgomery, Frederick C and Armstrong, Timothy R},
abstractNote = {The present invention relates to a method for selectively detecting and/or measuring gaseous SO.sub.2 at a temperature of at least 500.degree. C., the method involving: (i) providing a SO.sub.2-detecting device including an oxygen ion-conducting substrate having on its surface at least three electrodes comprising a first, second, and third electrode; (ii) driving a starting current of specified magnitude and temporal variation between the first and second electrodes; (iii) contacting the SO.sub.2-detecting device with the SO.sub.2-containing sample while maintaining the magnitude and any temporal variation of the starting current, wherein said SO.sub.2-containing sample causes a change in the electrical conductance of said device; and (iv) detecting the change in electrical conductance of the device based on measuring an electrical property related to or indicative of the conductance of the device between the first and third electrodes, or between the second and third electrodes, and detecting SO.sub.2 in the SO.sub.2-containing sample based on the measured change in electrical conductance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {11}
}

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Works referenced in this record:

High-temperature potentiometric/amperometric NOx sensors combining stabilized zirconia with mixed-metal oxide electrode
journal, September 1998