JP2020529609A - 可燃性ガス・センサ、検知装置、および可燃性ガスを検知する方法 - Google Patents
可燃性ガス・センサ、検知装置、および可燃性ガスを検知する方法 Download PDFInfo
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- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4075—Composition or fabrication of the electrodes and coatings thereon, e.g. catalysts
-
- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4162—Systems investigating the composition of gases, by the influence exerted on ionic conductivity in a liquid
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- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0047—Organic compounds
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Abstract
Description
Claims (22)
- 可燃性ガス・センサであって、
少なくとも1つの第1の電極と、
前記第1の電極とは異種の材料で形成された少なくとも1つの第2の電極と、
前記第1の電極と前記第2の電極との間の活性反応接点における触媒物質とを含み、
前記第1の電極と前記第2の電極との間の前記活性反応接点が熱電対を形成する、
可燃性ガス・センサ。 - 前記第1の電極または前記第2の電極は、プラチナおよびパラジウムからなるグループから選択された材料を含む、請求項1に記載の可燃性ガス・センサ。
- 前記第1の電極または前記第2の電極がプラチナ−銀合金を含み、前記プラチナ−銀合金は約20%から約25%までの間の範囲の銀を含み、約74%から約79%までの間の範囲のプラチナを含む、請求項1に記載の可燃性ガス・センサ。
- 前記触媒物質は導電性かつ多孔質である、請求項1に記載の可燃性ガス・センサ。
- 前記触媒物質は、プラチナ・ナノ粒子、パラジウム・ナノ粒子、ロジウム・ナノ粒子、およびこれらの組合せからなるグループから選択される、請求項4に記載の可燃性ガス・センサ。
- 前記第1の電極は前記触媒物質と直接物理的に接触し、前記第2の電極は前記触媒物質と直接物理的に接触し、前記第1の電極と前記第2の電極とが前記活性反応接点において互いに直接物理的に接触していない、請求項4に記載の可燃性ガス・センサ。
- 前記触媒物質が多孔質の非導電性物質内に分散している、請求項1に記載の可燃性ガス・センサ。
- 前記第1の電極と前記第2の電極とが前記活性反応接点において互いに直接物理的に接触している、請求項7に記載の可燃性ガス・センサ。
- 前記第1の電極と前記第2の電極とが取り付けられた不活性基板をさらに含む、請求項1に記載の可燃性ガス・センサ。
- 前記不活性基板は、石英、シリカ、窒化アルミニウム、雲母、窒化ホウ素、ガラス、およびこれらの組合せからなるグループから選択された材料を含む、請求項9に記載の可燃性ガス・センサ。
- 前記第1の電極と前記第2の電極とがそれぞれ前記基板上で互いに対して直角に配置されたストリップとして構成される、請求項9に記載の可燃性ガス・センサ。
- 前記ストリップはそれぞれ約1ナノメートルから約5ナノメートルまでの間の範囲の厚さを有する、請求項11に記載の可燃性ガス・センサ。
- 前記触媒物質は、前記触媒物質が前記第1の電極および前記第2の電極の両方に物理的に接触するように前記第1の電極と前記第2の電極との間に配置されている、請求項11に記載の可燃性ガス・センサ。
- 前記触媒物質は、前記第1の電極と前記第2の電極とを封止する、請求項11に記載の可燃性ガス・センサ。
- 前記第1の電極と、前記第2の電極と、前記触媒物質とが多孔質パッケージ内に封止されている、請求項14に記載の可燃性ガス・センサ。
- 前記多孔質パッケージは多孔質アルミナを含む、請求項15に記載の可燃性ガス・センサ。
- 複数の第1の電極をさらに含み、前記第2の電極は前記複数の第1の電極を架橋して前記複数の第1の電極と前記第2の電極との間に複数の接点を形成し、前記複数の接点のうちの1つの接点が前記活性反応接点であり、前記複数の接点のうちの別の接点が基準接点である、請求項1に記載の可燃性ガス・センサ。
- 検知装置であって、
少なくとも1つの第1の電極と、前記第1の電極とは異種の材料から形成された少なくとも1つの第2の電極と、前記第1の電極と前記第2の電極との間の活性反応接点における触媒物質とをそれぞれ含む複数のセンサを含み、
前記第1の電極と前記第2の電極との間の前記活性反応接点が熱電対を形成する、
検知装置。 - 前記複数のセンサは、異なる触媒物質をそれぞれ含む、請求項18に記載の検知装置。
- 前記検知装置の第1のセンサが触媒物質としてプラチナ・ナノ粒子を含み、前記検知装置の第2のセンサが触媒物質としてパラジウム・ナノ粒子を含み、前記検知装置の第3のセンサが触媒物質としてルテニウム・ナノ粒子を含む、請求項19に記載の検知装置。
- 可燃性ガスを検知する方法であって、
少なくとも1つの第1の電極と、前記第1の電極とは異種の材料で形成された少なくとも1つの第2の電極と、前記第1の電極と前記第2の電極との間の活性反応接点における触媒物質とを含み、前記第1の電極と前記第2の電極との間の前記活性反応接点が熱電対を形成する可燃性ガス・センサを設けることと、
前記触媒物質の前記可燃性ガスへの暴露時に前記第1の電極における差動電圧を測定することと
を含む、方法。 - 前記可燃性ガスは、水素、メタン、メタノール、ブタン、プロパン、および天然ガスからなるグループから選択される、請求項21に記載の方法。
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US15/674,265 US10935514B2 (en) | 2017-08-10 | 2017-08-10 | Low power combustible gas sensing |
US15/674,265 | 2017-08-10 | ||
PCT/IB2018/055807 WO2019030621A1 (en) | 2017-08-10 | 2018-08-02 | LOW POWER COMBUSTIBLE GAS DETECTION |
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CN (1) | CN110998303A (ja) |
DE (1) | DE112018003101B4 (ja) |
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US10935514B2 (en) | 2021-03-02 |
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GB2578861A (en) | 2020-05-27 |
US20190049403A1 (en) | 2019-02-14 |
JP7137283B2 (ja) | 2022-09-14 |
DE112018003101T5 (de) | 2020-03-26 |
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