JPS6438641A - Gas sensor - Google Patents

Gas sensor

Info

Publication number
JPS6438641A
JPS6438641A JP19258687A JP19258687A JPS6438641A JP S6438641 A JPS6438641 A JP S6438641A JP 19258687 A JP19258687 A JP 19258687A JP 19258687 A JP19258687 A JP 19258687A JP S6438641 A JPS6438641 A JP S6438641A
Authority
JP
Japan
Prior art keywords
alumina
layer
gas
platinum
tin oxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19258687A
Other languages
Japanese (ja)
Inventor
Kazunari Kubota
Hideo Takiguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP19258687A priority Critical patent/JPS6438641A/en
Publication of JPS6438641A publication Critical patent/JPS6438641A/en
Pending legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

PURPOSE:To stabilize isobutane gas sensitivity, by providing an oxidizing catalyst layer supporting Pt and Pd to the surface of the gas responsive body of a thin oxide type semiconductor. CONSTITUTION:Platinum electrodes 3, 4 and a platinum heater 2 are baked to an alumina substrate 1 and a tin oxide layer becoming a gas responsive body 5 is formed to the surface thereof on the platinum electrode side. Next, an oxidizing layer 6 supporting Pt and Pd is formed on the tin oxide layer by coating the tin oxide layer with an alumina paste prepared by mixing an alumina powder and colloidal alumina and baking said paste layer after drying an alumina layer. The alumina substrate having the alumina layer thus formed is immersed in a liquid mixture having a predetermined concn. of an aqueous platinum chloride solution and an aqueous palladium chloride solution and, after drying, pyrolysis is performed in air to obtain the oxidizing catalyst layer wherein a mixture of Pt and Pd is supported by alumina. By forming this oxidizing catalyst layer to the surface of the responsive body, a gas sensor low in ethyl alcohol sensitivity and having isobutane gas sensitivity without change by SO2 is obtained.
JP19258687A 1987-08-03 1987-08-03 Gas sensor Pending JPS6438641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19258687A JPS6438641A (en) 1987-08-03 1987-08-03 Gas sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19258687A JPS6438641A (en) 1987-08-03 1987-08-03 Gas sensor

Publications (1)

Publication Number Publication Date
JPS6438641A true JPS6438641A (en) 1989-02-08

Family

ID=16293745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19258687A Pending JPS6438641A (en) 1987-08-03 1987-08-03 Gas sensor

Country Status (1)

Country Link
JP (1) JPS6438641A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485685A (en) * 1992-04-10 1996-01-23 Eiwa Co., Ltd. Wood treating method
US5784805A (en) * 1992-04-10 1998-07-28 Eiwa Co., Ltd. Wood treating apparatus
JP2020165756A (en) * 2019-03-29 2020-10-08 大阪瓦斯株式会社 Gas sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485685A (en) * 1992-04-10 1996-01-23 Eiwa Co., Ltd. Wood treating method
US5784805A (en) * 1992-04-10 1998-07-28 Eiwa Co., Ltd. Wood treating apparatus
JP2020165756A (en) * 2019-03-29 2020-10-08 大阪瓦斯株式会社 Gas sensor

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