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Zeolite Sensor for Nitrogen Monoxide Detection at High Temperature

Published online by Cambridge University Press:  10 February 2011

Hiroshi Tsuchiya ,
Isao Sasaki ,
Azuchi Harano ,
Tatsuya Okubo  and
Masayoshi Sadakata
Hiroshi Tsuchiya
Affiliation:
Dept. of Chemical System Engineering, The University of Tokyo 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan, tt66757@hongo.ecc.u-tokyo.ac.jp, okubo@chemsys.t.u-tokyo.ac.jp.
Isao Sasaki
Affiliation:
Dept. of Chemical System Engineering, The University of Tokyo 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan, tt66757@hongo.ecc.u-tokyo.ac.jp, okubo@chemsys.t.u-tokyo.ac.jp.
Azuchi Harano
Affiliation:
Dept. of Chemical System Engineering, The University of Tokyo 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan, tt66757@hongo.ecc.u-tokyo.ac.jp, okubo@chemsys.t.u-tokyo.ac.jp.
Tatsuya Okubo
Affiliation:
Dept. of Chemical System Engineering, The University of Tokyo 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan, tt66757@hongo.ecc.u-tokyo.ac.jp, okubo@chemsys.t.u-tokyo.ac.jp.
Masayoshi Sadakata
Affiliation:
Dept. of Chemical System Engineering, The University of Tokyo 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan, tt66757@hongo.ecc.u-tokyo.ac.jp, okubo@chemsys.t.u-tokyo.ac.jp.
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Abstract

Development of new NOx sensors, which would be sensitive, selective, inexpensive and stable at elevated temperature, will greatly contribute to the reduction of the air pollution. In this paper, synthesis and performance of zeolite film applied for gas sensing are reported.

Zeolite thin films (Cu ion-exchanged ZSM-5) were synthesized on the gold electrode of AT-cut quartz platelet by hydrothermal synthesis. In order to probe the target molecule (NO) selectively, Na in as synthesized ZSM-5 film was ion-exchanged with Cu. The films were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The synthesis condition for orientation to (0×0) face, on which the straight pores of ZSM-5 are opening, was optimized.

The bulk type quartz oscillator coated with Cu-ZSM-5 thin layer was tested as NO sensor in a flowing stream of He. This sensing system could be operated at high temperature because of the thermal stability of the ZSM-5 film and the gold electrode. As a result, NO was successfully detected at 348 K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 454: Symposium S – Advanced Catalytic Materials–1996 , 1996 , 297
Copyright
Copyright © Materials Research Society 1997

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References

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