WO2009087656A1 - Capteur de gaz combustibles - Google Patents

Capteur de gaz combustibles Download PDF

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Publication number
WO2009087656A1
WO2009087656A1 PCT/IN2008/000717 IN2008000717W WO2009087656A1 WO 2009087656 A1 WO2009087656 A1 WO 2009087656A1 IN 2008000717 W IN2008000717 W IN 2008000717W WO 2009087656 A1 WO2009087656 A1 WO 2009087656A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
platinum
combustible gas
film
layer
Prior art date
Application number
PCT/IN2008/000717
Other languages
English (en)
Inventor
Vipin Kumar
Kiran Jain
S.T. Lakshmidumar
T. Raghavandra
Original Assignee
Council Of Scientific & Industrial Research
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 Council Of Scientific & Industrial Research filed Critical Council Of Scientific & Industrial Research
Priority to AP2010005255A priority Critical patent/AP2499A/xx
Publication of WO2009087656A1 publication Critical patent/WO2009087656A1/fr

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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
    • G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles

Definitions

  • Yet another objective of the present invention is to provide an electrical circuit for use of the sensor as a gas leak alarm.
  • the heater used in step (a) is a complex of hexachloroplatinic acid with a strong reducing agent such as turpentine oil and a weak reducing agent selected from acetyl acetone and ethyl alcohol.
  • the top coating of SiO 2 film formed in step (d) comprises 25-50 wt% platinum chloride, 25-50 wt% niobium chloride and 25-50 wt % SiO2 in the form of organic compound such as tetraethoxy silane.
  • the novelty of the present invention lies in 3 main steps involved in fabrication of the sensor. First, the sensor is a bi - layer structure where stability, sensitivity and selectivity have been achieved by a single step in providing a top layer by dip coating. The second step is to miniaturize the size of the sensor heater, which leads to less power consumption. The third step is to provide a support to the fragile electrical leads.
  • the device has selective response for liquid petroleum gas (LPG) over ethanol and humidity. 2.
  • LPG liquid petroleum gas
  • the device has made the miniature size application possible in the invention, due to the small size of platinum heater working at 5 volts.
  • the fast anchored electrical leads to the sensor provide accident and fault - free working of the device.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

L'invention concerne un capteur pour gaz combustibles. La présente invention concerne également un procédé de fabrication d'un capteur de gaz LPG avec la technologie des couches épaisses planes. La présente invention concerne plus particulièrement la fabrication d'un capteur bicouche basé sur du SnO2 semi-conducteur, la composition de la première couche incluant SnO2, Pt et des métaux de terres rares et celle de la seconde couche incluant Pt, Nb et Si, la seconde couche étant enrobée par immersion sur la première. Les trois principales opérations de la fabrication du capteur sont : (i) le capteur est une structure bicouche dont la stabilité, la sensibilité et la sélectivité ont été obtenues par une seule opération en fournissant une couche supérieure par enrobage par immersion, (ii) la miniaturisation du réchauffeur de capteur, ce qui entraîne une diminution de la consommation électrique et (iii) la fourniture d'un support aux fils électriques fragiles.
PCT/IN2008/000717 2008-01-07 2008-10-31 Capteur de gaz combustibles WO2009087656A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AP2010005255A AP2499A (en) 2008-01-07 2008-10-31 Combustible gas sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN62DE2008 2008-01-07
IN062/DEL/2008 2008-01-07

Publications (1)

Publication Number Publication Date
WO2009087656A1 true WO2009087656A1 (fr) 2009-07-16

Family

ID=40342986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2008/000717 WO2009087656A1 (fr) 2008-01-07 2008-10-31 Capteur de gaz combustibles

Country Status (2)

Country Link
AP (1) AP2499A (fr)
WO (1) WO2009087656A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112225245A (zh) * 2019-06-28 2021-01-15 东北大学 一种稀土元素掺杂的SnO2基高响应SO2敏感材料的制备方法
CN113088873A (zh) * 2021-03-15 2021-07-09 中南大学 一种乙醇蒸汽与间隙敏感元件及其研制方法
CN114609198A (zh) * 2022-05-13 2022-06-10 兰州大学 一种基于稀土元素掺杂、贵金属修饰的氧化锡基氢气传感材料及其制备方法、应用
CN114813837A (zh) * 2021-07-09 2022-07-29 长城汽车股份有限公司 生物柴油品质传感器及其制作方法和车辆
US11806142B2 (en) 2019-12-13 2023-11-07 Heraeus Deutschland GmbH & Co. KG Method for the manufacture of precious metal electrodes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056339A1 (fr) * 1981-01-14 1982-07-21 Westinghouse Electric Corporation Procédé de fabrication d'un détecteur de gaz à oxide stannique
DE3604594A1 (de) * 1986-02-14 1987-08-20 Schott Glaswerke Duennfilmgassensoren mit hoher messempfindlichkeit als mehrschichtsysteme auf der basis von indiumoxid-tauchschichten zum nachweis von gasspuren in traegergasen
US5624640A (en) * 1993-10-12 1997-04-29 Robert Bosch Gmbh Sensor for detecting nitrogen oxide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056339A1 (fr) * 1981-01-14 1982-07-21 Westinghouse Electric Corporation Procédé de fabrication d'un détecteur de gaz à oxide stannique
DE3604594A1 (de) * 1986-02-14 1987-08-20 Schott Glaswerke Duennfilmgassensoren mit hoher messempfindlichkeit als mehrschichtsysteme auf der basis von indiumoxid-tauchschichten zum nachweis von gasspuren in traegergasen
US5624640A (en) * 1993-10-12 1997-04-29 Robert Bosch Gmbh Sensor for detecting nitrogen oxide

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ALIPOUR S ET AL: "Selective Sensor to LPG in presence of CO using nanogold filter, operating at low temperature, with Pt/SnO2", SENSORS, 2006. 5TH IEEE CONFERENCE ON, IEEE, PI, 1 October 2006 (2006-10-01), pages 1089 - 1092, XP031083209, ISBN: 978-1-4244-0375-2 *
PARK CO, AKBAR SA AND HWANG J: "Selective gas detection with catalytic filter", MATERIALS CHEMISTRY AND PHYSICS, vol. 75, no. 1-3, 28 April 2002 (2002-04-28), pages 56 - 60, XP002515336 *
SAUVAN M ET AL: "Selectivity improvement of SnO2 films by superficial metallic films", SENSORS AND ACTUATORS B, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 58, no. 1-3, 21 September 1999 (1999-09-21), pages 295 - 301, XP004251759, ISSN: 0925-4005 *
WADA K ET AL: "Improvement of gas-sensing properties of SnO2 by surface chemical modification with diethoxydimethylsilane", SENSORS AND ACTUATORS B, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 53, no. 3, 10 December 1998 (1998-12-10), pages 147 - 154, XP004168050, ISSN: 0925-4005 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112225245A (zh) * 2019-06-28 2021-01-15 东北大学 一种稀土元素掺杂的SnO2基高响应SO2敏感材料的制备方法
US11806142B2 (en) 2019-12-13 2023-11-07 Heraeus Deutschland GmbH & Co. KG Method for the manufacture of precious metal electrodes
CN113088873A (zh) * 2021-03-15 2021-07-09 中南大学 一种乙醇蒸汽与间隙敏感元件及其研制方法
CN113088873B (zh) * 2021-03-15 2021-12-21 中南大学 一种乙醇蒸汽与间隙敏感元件及其研制方法
CN114813837A (zh) * 2021-07-09 2022-07-29 长城汽车股份有限公司 生物柴油品质传感器及其制作方法和车辆
CN114609198A (zh) * 2022-05-13 2022-06-10 兰州大学 一种基于稀土元素掺杂、贵金属修饰的氧化锡基氢气传感材料及其制备方法、应用

Also Published As

Publication number Publication date
AP2010005255A0 (en) 2010-08-31
AP2499A (en) 2012-10-22

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