Title:
GAS SENSOR
Document Type and Number:
WIPO Patent Application WO/2019/017377
Kind Code:
A1
Abstract:
A noble metal constituent of a detection electrode of this gas sensor comprises a mixture or an alloy of platinum and one or more noble metal elements other than platinum. The platinum and the noble metal elements have four types of adsorption sites, namely an ontop site (S1), a bridge site (S2), a hexagonal close-packed hollow site (S3), and a face-centered cubic hollow site (S4). The CO molecule adsorption energy of the noble metal at at least one of the four types of adsorption sites is less than that of the platinum at the same adsorption site. Moreover, the NO dissociative adsorption energy of the noble metal at at least one of the four types of adsorption sites is greater than that of the platinum at the same adsorption site.
Inventors:
MAEDA ERIKO (JP)
OKAMOTO TAKUMI (JP)
ITO MAKOTO (JP)
SUZUKI YOSUKE (JP)
KAWAI DAISUKE (JP)
OKAMOTO TAKUMI (JP)
ITO MAKOTO (JP)
SUZUKI YOSUKE (JP)
KAWAI DAISUKE (JP)
Application Number:
PCT/JP2018/026876
Publication Date:
January 24, 2019
Filing Date:
July 18, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01N27/409; G01N27/41
Foreign References:
| JPS50132990A | 1975-10-21 | |||
| JPS52123292A | 1977-10-17 | |||
| JPS5330386A | 1978-03-22 | |||
| JPS51142389A | 1976-12-07 | |||
| JPS5175497A | 1976-06-30 | |||
| JPH06331593A | 1994-12-02 | |||
| JP2008043943A | 2008-02-28 |
Attorney, Agent or Firm:
AICHI, TAKAHASHI, IWAKURA & ASSOCIATES (JP)
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