JPS6438641A - Gas sensor - Google Patents
Gas sensorInfo
- 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
Links
Landscapes
- 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.
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)
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 |
-
1987
- 1987-08-03 JP JP19258687A patent/JPS6438641A/en active Pending
Cited By (3)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0703449B1 (en) | Catalytic calorimetric gas sensor | |
GB1418280A (en) | Oxygen sensor coated with catalytic material | |
GB1509346A (en) | Method of forming porous coating on electrode layer of concentration cell type oxygen sensor | |
JPS54146690A (en) | Gas detecting element | |
US4768012A (en) | Sensors | |
JPH0177943U (en) | ||
JPS6438641A (en) | Gas sensor | |
JP2000146906A (en) | Gas sensor element | |
JPS54134697A (en) | Gas sensitive element | |
JPH0226741B2 (en) | ||
JPS6036017B2 (en) | Manufacturing method of reducing gas detection element | |
JP3271635B2 (en) | Thick film gas sensor and method of manufacturing the same | |
JP3026523B2 (en) | Gas sensor | |
JPS57207856A (en) | Preparation of electrode for gaseous oxygen detection element | |
JP3696494B2 (en) | Nitrogen oxide sensor | |
JPH0531104B2 (en) | ||
JPS63279150A (en) | Semiconductor type gas sensor | |
JPS6367556A (en) | Gas detector | |
JPS61218933A (en) | Production of oxygen concentration sensor | |
JPH03162656A (en) | Gas sensor | |
JPH04279853A (en) | Gas sensor | |
JPS5710446A (en) | Gas detecting element | |
JP2575479B2 (en) | Gas sensor | |
JPH01250852A (en) | Gas sensor | |
JPS59120946A (en) | Gaseous freon detecting element |