High-T NOx sensing elements using conductive oxides and Pt

David L. West; Fred C. Montgomery; Timothy R. Armstrong

doi:10.1115/icef2004-0854

High-T NO_x sensing elements using conductive oxides and Pt

David L. West, Fred C. Montgomery, Timothy R. Armstrong

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Development of NO_x sensing elements intended for operation at T ∼600°C are described. The elements were fabricated by depositing co-planar La_1-xSr_xBO₃ (B = Cr, Fe) and Pt electrodes on yttria-stabilized zirconia substrates. Characterization of the elements included response to NO₂ and NO as well as the [O ₂] dependence of the NO₂ response. Much stronger (∼40 mV for 450 ppm NO₂ in 7 vol% O₂ at 600°C) sensing responses were observed for NO₂ than NO, indicating these elements are best suited for detection of NO₂. Pronounced asymmetries were observed between the NO₂ step response and recovery times for the elements, with temperature being the primary variable governing the recovery times in the temperature range 500-700°C.

Original language	English
Title of host publication	Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division
Publisher	American Society of Mechanical Engineers
Pages	29-33
Number of pages	5
ISBN (Print)	0791837467, 9780791837467
DOIs	https://doi.org/10.1115/icef2004-0854
State	Published - 2004
Event	Fall Technical Conference of the ASME International Combustion Engine Division - Long Beach, CA, United States Duration: Oct 24 2004 → Oct 27 2004

Publication series

Name	Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division

Conference

Conference	Fall Technical Conference of the ASME International Combustion Engine Division
Country/Territory	United States
City	Long Beach, CA
Period	10/24/04 → 10/27/04

Access to Document

10.1115/icef2004-0854

Cite this

West, D. L., Montgomery, F. C., & Armstrong, T. R. (2004). High-T NO_x sensing elements using conductive oxides and Pt. In Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division (pp. 29-33). Article 854 (Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division). American Society of Mechanical Engineers. https://doi.org/10.1115/icef2004-0854

West, David L. ; Montgomery, Fred C. ; Armstrong, Timothy R. / High-T NO_x sensing elements using conductive oxides and Pt. Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division. American Society of Mechanical Engineers, 2004. pp. 29-33 (Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division).

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title = "High-T NOx sensing elements using conductive oxides and Pt",

abstract = "Development of NOx sensing elements intended for operation at T ∼600°C are described. The elements were fabricated by depositing co-planar La1-xSrxBO3 (B = Cr, Fe) and Pt electrodes on yttria-stabilized zirconia substrates. Characterization of the elements included response to NO2 and NO as well as the [O 2] dependence of the NO2 response. Much stronger (∼40 mV for 450 ppm NO2 in 7 vol% O2 at 600°C) sensing responses were observed for NO2 than NO, indicating these elements are best suited for detection of NO2. Pronounced asymmetries were observed between the NO2 step response and recovery times for the elements, with temperature being the primary variable governing the recovery times in the temperature range 500-700°C.",

author = "West, {David L.} and Montgomery, {Fred C.} and Armstrong, {Timothy R.}",

year = "2004",

doi = "10.1115/icef2004-0854",

language = "English",

isbn = "0791837467",

series = "Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division",

publisher = "American Society of Mechanical Engineers",

pages = "29--33",

booktitle = "Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division",

note = "Fall Technical Conference of the ASME International Combustion Engine Division ; Conference date: 24-10-2004 Through 27-10-2004",

}

West, DL , Montgomery, FC & Armstrong, TR 2004, High-T NO_x sensing elements using conductive oxides and Pt. in Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division., 854, Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division, American Society of Mechanical Engineers, pp. 29-33, Fall Technical Conference of the ASME International Combustion Engine Division, Long Beach, CA, United States, 10/24/04. https://doi.org/10.1115/icef2004-0854

High-T NO_x sensing elements using conductive oxides and Pt. / West, David L.; Montgomery, Fred C.; Armstrong, Timothy R.
Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division. American Society of Mechanical Engineers, 2004. p. 29-33 854 (Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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West DL , Montgomery FC, Armstrong TR. High-T NO_x sensing elements using conductive oxides and Pt. In Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division. American Society of Mechanical Engineers. 2004. p. 29-33. 854. (Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division). doi: 10.1115/icef2004-0854