WO1995008764A1 - Tin oxide based gas sensors and method for their manufacture - Google Patents
Tin oxide based gas sensors and method for their manufacture Download PDFInfo
- Publication number
- WO1995008764A1 WO1995008764A1 PCT/GB1994/001832 GB9401832W WO9508764A1 WO 1995008764 A1 WO1995008764 A1 WO 1995008764A1 GB 9401832 W GB9401832 W GB 9401832W WO 9508764 A1 WO9508764 A1 WO 9508764A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tin
- gas sensor
- hydrolysis
- tin oxide
- polymer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
Definitions
- An amount of the dried solid is then mixed with a solvent, for example THF, to form a slurry which is deposited on a standard Rosemount alumina substrate fitted with gold interdigitated electrodes and a platinum heater on the obverse side, to form the gas sensor head.
- a solvent for example THF
- the sensor head can be used at different operating temperatures which provides the opportunity for selective chemical sensing. This selectivity arises from the fact that the reactions of different flammable gases on the sensor surface have different activation energies and so their rates of reaction may be controlled by varying the supply of thermal energy to the sensor.
- Figure 5 shows the response of a sensor according to the present invention to concentrations of up to approximately 36 ppm xylene.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9605970A GB2296978B (en) | 1993-09-23 | 1994-08-22 | Tin oxide based gas sensors and method for their manufacture |
EP94924914A EP0720738A1 (en) | 1993-09-23 | 1994-08-22 | Tin oxide based gas sensors and method for their manufacture |
JP7509619A JPH09503860A (en) | 1993-09-23 | 1994-08-22 | Oxide-based gas sensor and method for manufacturing the sensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB939319456A GB9319456D0 (en) | 1993-09-23 | 1993-09-23 | Improvements in tin oxide based gas sensors |
GB9319456.1 | 1993-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995008764A1 true WO1995008764A1 (en) | 1995-03-30 |
Family
ID=10742281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1994/001832 WO1995008764A1 (en) | 1993-09-23 | 1994-08-22 | Tin oxide based gas sensors and method for their manufacture |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0720738A1 (en) |
JP (1) | JPH09503860A (en) |
CN (1) | CN1134190A (en) |
CA (1) | CA2172515A1 (en) |
GB (2) | GB9319456D0 (en) |
WO (1) | WO1995008764A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010032343A (en) * | 2008-07-29 | 2010-02-12 | Figaro Eng Inc | MANUFACTURING METHOD OF SnO2 GAS SENSOR, AND MANUFACTURING METHOD OF SnO2 CARRYING HAVING NOBLE METAL NANOPARTICLES |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1282993A (en) * | 1970-05-22 | 1972-07-26 | Naoyoshi Taguchi | Gas detecting devices |
DE3313752A1 (en) * | 1982-04-17 | 1983-10-20 | Figaro Engineering Inc., Minoo, Osaka | EXHAUST GAS SENSOR AND METHOD FOR PRODUCING SUCH A |
-
1993
- 1993-09-23 GB GB939319456A patent/GB9319456D0/en active Pending
-
1994
- 1994-08-22 CA CA 2172515 patent/CA2172515A1/en not_active Abandoned
- 1994-08-22 JP JP7509619A patent/JPH09503860A/en active Pending
- 1994-08-22 WO PCT/GB1994/001832 patent/WO1995008764A1/en not_active Application Discontinuation
- 1994-08-22 GB GB9605970A patent/GB2296978B/en not_active Expired - Fee Related
- 1994-08-22 EP EP94924914A patent/EP0720738A1/en not_active Withdrawn
- 1994-08-22 CN CN 94194024 patent/CN1134190A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1282993A (en) * | 1970-05-22 | 1972-07-26 | Naoyoshi Taguchi | Gas detecting devices |
DE3313752A1 (en) * | 1982-04-17 | 1983-10-20 | Figaro Engineering Inc., Minoo, Osaka | EXHAUST GAS SENSOR AND METHOD FOR PRODUCING SUCH A |
Non-Patent Citations (5)
Title |
---|
ATKINSON A ET AL: "Thin film electroceramics", SIXTH INTERNATIONAL CONFERENCE ON SOLID FILMS AND SURFACES. ICSFS-6, PARIS, FRANCE, 29 JUNE-3 JULY 1992, ISSN 0169-4332, APPLIED SURFACE SCIENCE, 1993, NETHERLANDS, PAGE(S) 212 - 219 * |
BUTTA N ET AL: "Influence of surface parameters and doping on the sensitivity and on the response times of tin oxide resistive sensors", SENSORS AND ACTUATORS B (CHEMICAL), MAY 1990, SWITZERLAND, VOL. B2, NR. 2, PAGE(S) 151 - 161, ISSN 0925-4005 * |
LI H X ET AL: "Preparation and characterization of SnO/sub 2/ gas-sensitive membranes by sol-gel process", FOURTH INTERNATIONAL MEETING ON CHEMICAL SENSORS, TOKYO, JAPAN, 13-17 SEPT. 1992, ISSN 0925-4005, SENSORS AND ACTUATORS B (CHEMICAL), JUNE 1993, SWITZERLAND, PAGE(S) 675 - 676 * |
NAKAHARA T ET AL: "High sensitive SnO/sub 2/ gas sensor. I. Detection of volatile sulfides", PROCEEDINGS OF THE SYMPOSIUM ON CHEMICAL SENSORS, HONOLULU, HI, USA, 18-23 OCT. 1987, 1987, PENNINGTON, NJ, USA, ELECTROCHEM. SOC, USA, PAGE(S) 55 - 64 * |
WILSON A ET AL: "Sol-gel materials for gas-sensing applications", EUROSENSORS VII CONFERENCE AND EXHIBITION, BUDAPEST, HUNGARY, 26-29 SEPT. 1993, ISSN 0925-4005, SENSORS AND ACTUATORS B (CHEMICAL), APRIL 1994, SWITZERLAND, PAGE(S) 506 - 510 * |
Also Published As
Publication number | Publication date |
---|---|
CN1134190A (en) | 1996-10-23 |
GB2296978A (en) | 1996-07-17 |
GB9605970D0 (en) | 1996-05-22 |
GB9319456D0 (en) | 1993-11-03 |
CA2172515A1 (en) | 1995-03-30 |
GB2296978B (en) | 1997-12-24 |
JPH09503860A (en) | 1997-04-15 |
EP0720738A1 (en) | 1996-07-10 |
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