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JPS5757249A - Gas sensing element - Google Patents

Gas sensing element

Info

Publication number
JPS5757249A
JPS5757249A JP13235380A JP13235380A JPS5757249A JP S5757249 A JPS5757249 A JP S5757249A JP 13235380 A JP13235380 A JP 13235380A JP 13235380 A JP13235380 A JP 13235380A JP S5757249 A JPS5757249 A JP S5757249A
Authority
JP
Japan
Prior art keywords
vanadium
al2o3
gas
sio2
baked
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.)
Granted
Application number
JP13235380A
Other languages
Japanese (ja)
Other versions
JPS618940B2 (en
Inventor
Masayuki Shiratori
Masaki Katsura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13235380A priority Critical patent/JPS5757249A/en
Priority to US06/293,963 priority patent/US4407778A/en
Priority to AU75432/81A priority patent/AU541693B2/en
Priority to DE8181107576T priority patent/DE3175814D1/en
Priority to EP81107576A priority patent/EP0048955B1/en
Priority to CA000386550A priority patent/CA1171461A/en
Publication of JPS5757249A publication Critical patent/JPS5757249A/en
Publication of JPS618940B2 publication Critical patent/JPS618940B2/ja
Granted legal-status Critical Current

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

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

PURPOSE:To obtain higher sensitivity for reducible gas and Freon gas in low concentration of a degree of 500ppm, by providing a catalyst layer comprising Al2O3 and SiO2 on Al2O3. SiO2 carrying a prescribed amount of vanadium on the surface of a gas-sensitive means. CONSTITUTION:A carrier of Al2O3, SiO2 and Al2O3.SiO3 is weighed in a prescribed amount, and the carrier is dipped in a vanadium solution on a mixed solution of vanadium molybdenum and a mixed solution of vanadium-tungsten. After that, the resultant is left as it is, and is evaporated on drying, and further, it is pulverized to be fine particles in a mortar. Further said fine particles are entered in a quartz crucible, and are baked at temperature of 300-600 deg.C to obtain a catalyst. As a gas-sensitive means 3 a binder such as methyl cellulose is added properly by mixing to an oxide semiconductor of a ZnO system. This is applied on an insulating substrate 1 provided with a pair of electrode 2, and dried, before being baked. On the surface of this means 3, said catalyst is applied by using a proper solvent, and is baked. The vanadium content in said catalyst layer is made to be 0.1- 50wt%.
JP13235380A 1980-09-25 1980-09-25 Gas sensing element Granted JPS5757249A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP13235380A JPS5757249A (en) 1980-09-25 1980-09-25 Gas sensing element
US06/293,963 US4407778A (en) 1980-09-25 1981-08-18 Freon gas detecting element
AU75432/81A AU541693B2 (en) 1980-09-25 1981-09-17 Freon gas detecting element
DE8181107576T DE3175814D1 (en) 1980-09-25 1981-09-23 Freon gas detecting element
EP81107576A EP0048955B1 (en) 1980-09-25 1981-09-23 Freon gas detecting element
CA000386550A CA1171461A (en) 1980-09-25 1981-09-24 Freon gas detecting element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13235380A JPS5757249A (en) 1980-09-25 1980-09-25 Gas sensing element

Publications (2)

Publication Number Publication Date
JPS5757249A true JPS5757249A (en) 1982-04-06
JPS618940B2 JPS618940B2 (en) 1986-03-18

Family

ID=15079369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13235380A Granted JPS5757249A (en) 1980-09-25 1980-09-25 Gas sensing element

Country Status (1)

Country Link
JP (1) JPS5757249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637450A (en) * 1986-06-27 1988-01-13 川鉄建材工業株式会社 Macadam decorative surface finish panel and its production
JPH02236351A (en) * 1989-03-08 1990-09-19 Nitto Boseki Co Ltd Transparent through-chip type tile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637450A (en) * 1986-06-27 1988-01-13 川鉄建材工業株式会社 Macadam decorative surface finish panel and its production
JPH02236351A (en) * 1989-03-08 1990-09-19 Nitto Boseki Co Ltd Transparent through-chip type tile
JPH0721242B2 (en) * 1989-03-08 1995-03-08 日東紡績株式会社 Transparent through-chip tile

Also Published As

Publication number Publication date
JPS618940B2 (en) 1986-03-18

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