JP7107494B2 - ガス検出器 - Google Patents
ガス検出器 Download PDFInfo
- Publication number
- JP7107494B2 JP7107494B2 JP2021507369A JP2021507369A JP7107494B2 JP 7107494 B2 JP7107494 B2 JP 7107494B2 JP 2021507369 A JP2021507369 A JP 2021507369A JP 2021507369 A JP2021507369 A JP 2021507369A JP 7107494 B2 JP7107494 B2 JP 7107494B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- separation membrane
- detector according
- membrane
- gas detector
- 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.)
- Active
Links
Images
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
- G01N27/128—Microapparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
- B01D69/108—Inorganic support material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/44—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42
-
- 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
-
- 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
- G01N27/126—Composition of the body, e.g. the composition of its sensitive layer comprising organic polymers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
- B01D2257/7025—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
・ poly[1-(trimethylsilil)-1-propyne](PTMSP),poly[1-(trimethylgermyl)-1-propyne](PTMGP)など、Si,Ge等のヘテロ原子を(CH3)3Si-,(CH3)3Ge-等の置換基として含むもの。
・ poly[4-(methyl)-2-pentyne](PMP),poly[1,2-diphenyl acetylene](PDPA)など、ヘテロ原子を含まず、かつiso-propyl基,フェニル基などの大きな置換基を含むもの。
・ poly[1,4,5-(CF3)3-phenylacetylene],poly[1,5-(CF3)2-phenylacetylene]など、CF3基を含む大きな置換基を持つもの。
・ poly[1-phenyl-2-[(p-trimethylsilyl)phenyl]acetylene](PTMSDPA)など、(CH3)3Si-,(CH3)3Ge-等の置換基とフェニル基とを含むもの。特にPTMSDPAは、p-トリメチルシリル-フェニル基とフェニル基とを含むので大きな細孔を持ち、検知対象ガスへの透過性と大型の環状シロキサン化合物をブロックする性能の2点で好ましい。
環状シロキサン(D4)1ppmに1時間暴露した前後での、CH4及びH2に対するガスセンサ2の応答の変化を観察した。ガスセンサ2の金属酸化物半導体膜8は膜厚40μmのSnO2膜で、動作条件は30秒毎に0.1秒間、最高加熱温度約430℃まで加熱する間欠加熱である。ガスセンサ2に負荷抵抗を接続し、加熱終了時の金属酸化物半導体8の抵抗値を測定した。多孔質PTFE膜上に膜厚10μm程度のPTMSDPA膜を積層したものをガス分離膜14とし、実施例ではガス分離膜14を設け、比較例ではガス分離膜14の代わりに単なる多孔質PTFE膜を設けた。ガスセンサ数は実施例では3、比較例では2で、検知対象ガスはCH4(図4)及びH2(図5)で、濃度は共に1000-9000ppmである。図4,図5の上段は実施例の結果を、下段は比較例の結果を示す。図4,図5から、ガス分離膜14によりシロキサンの影響を緩和できることが分かる。
置換ポリアセチレン膜は、ガス選択透過膜の中では、自由容積が大きくかつ親油性が高い。膜のガス選択性には、
・ 細孔サイズとガス分子のサイズとの相対的な値による選択性と、
・ 膜内にガス分子が溶解する溶解度、溶解したガス分子の拡散速度による選択性、
の2つの機構が考えられる。細孔サイズを利用する機構では、細孔サイズよりも大きなガス分子は細孔に侵入できないことを利用する。溶解度等を利用する機構では、大きなサイズのガス分子は膜内に溶解した後、比較的大きな細孔にトラップされ、膜内を透過しにくいことを利用する。置換ポリアセチレン膜では、細孔サイズとシロキサン分子のサイズとの違いによる選択性に加え、膜内に溶解したシロキサン分子の拡散が遅いことが寄与している、と考えられる。また置換ポリアセチレン膜では、小さなガス分子はこのような細孔にトラップされず速やかに膜を透過し、ガスセンサの検出速度への影響が小さい。
4 Siチップ
5 キャビテイ
6 支持膜
8 金属酸化物半導体膜
10,24 ベース
11 メタライズ部
12,28 カバー
13,34 通気孔
14 ガス分離膜
25 ピン
26 基板
30 吸着フィルタ
32 多孔質膜
42 スマートフォン
45 ガス導入孔
46 排気孔
48 ガスセンサ
Claims (8)
- 主鎖の2重結合炭素原子に置換基が結合している置換ポリアセチレンから成るガス分離膜と、
ガス分離膜を透過したガスを検出するセンシング要素、とを備え、
前記センシング要素は金属酸化物半導体式あるいは接触燃焼式のセンシング要素であり、
前記ガス分離膜は、環状シロキサンを遮断し、検出対象ガスを透過させるガス検出器。 - ガス分離膜は支持膜の無い単層膜であることを特徴とする、請求項1のガス検出器。
- センシング要素は、ガスにより抵抗値が変化する金属酸化物半導体膜を支持するMEMSチップであることを特徴とする、請求項1または2のガス検出器。
- 人の呼気中の水蒸気をガス分離膜により遮断するように構成されていることを特徴とする、請求項1~3のいずれかのガス検出器。
- 環境中のVOC(揮発性有機物)を検出対象ガスとすることを特徴とする、請求項1~3のいずれかのガス検出器。
- ガス分離膜を透過したガスから、検出対象以外のガスを吸着する吸着フィルタをさらに備えていることを特徴とする、請求項1~3のいずれかのガス検出器。
- ガス分離膜が吸着フィルタの外気側カバーを兼ねていることを特徴とする、請求項6のガス検出器。
- 検出対象ガスがメタンで、前記吸着フィルタにより、エタノール、スチレン及びピネンを吸着することを特徴とする、請求項6のガス検出器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019050582 | 2019-03-19 | ||
JP2019050582 | 2019-03-19 | ||
PCT/JP2020/011690 WO2020189675A1 (ja) | 2019-03-19 | 2020-03-17 | ガス検出器 |
Publications (3)
Publication Number | Publication Date |
---|---|
JPWO2020189675A1 JPWO2020189675A1 (ja) | 2020-09-24 |
JPWO2020189675A5 JPWO2020189675A5 (ja) | 2022-01-18 |
JP7107494B2 true JP7107494B2 (ja) | 2022-07-27 |
Family
ID=72520124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021507369A Active JP7107494B2 (ja) | 2019-03-19 | 2020-03-17 | ガス検出器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US12078606B2 (ja) |
JP (1) | JP7107494B2 (ja) |
CN (1) | CN113574369B (ja) |
WO (1) | WO2020189675A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7057576B2 (ja) * | 2019-05-17 | 2022-04-20 | フィガロ技研株式会社 | ガス検出装置及びガス検出方法 |
DE102021103897A1 (de) * | 2021-02-18 | 2022-08-18 | Infineon Technologies Ag | Gassensor mit einem hohlraum und einer gasdurchlassstruktur mit einem selektiv gasdurchlässigem element |
IT202200006020A1 (it) * | 2022-03-28 | 2023-09-28 | Airgloss S R L | Cartuccia multigas digitale basata su array di sensori mems ad ossido di metallo per il riconoscimento di pattern relativi alla composizione dell’aria e relativo metodo di stabilizzazione |
WO2024027486A1 (zh) * | 2022-08-02 | 2024-02-08 | 杭州三花研究院有限公司 | 检测组件、传感装置以及传感装置的制造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010104045A1 (ja) | 2009-03-09 | 2010-09-16 | 住友化学株式会社 | 重合体 |
WO2010110051A1 (ja) | 2009-03-24 | 2010-09-30 | シャープ株式会社 | 化学物質検出装置 |
JP2013242269A (ja) | 2012-05-22 | 2013-12-05 | Figaro Eng Inc | ガスセンサ |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1034618A3 (ru) * | 1978-06-21 | 1983-08-07 | "Раделкиш" Электрокемиаи Мюсердьярто Севеткезет (Инопредприятие) | Электрохимический датчик дл определени концентрации веществ в растворах |
JPS59221971A (ja) | 1983-05-30 | 1984-12-13 | Sanyo Chem Ind Ltd | 空気電極 |
JPH0691928B2 (ja) * | 1985-08-02 | 1994-11-16 | 松下電器産業株式会社 | 気体透過膜 |
US5338430A (en) * | 1992-12-23 | 1994-08-16 | Minnesota Mining And Manufacturing Company | Nanostructured electrode membranes |
US5407466A (en) * | 1993-10-25 | 1995-04-18 | Membrane Technology And Research, Inc. | Sour gas treatment process including membrane and non-membrane treatment steps |
CN1179210C (zh) * | 1996-11-01 | 2004-12-08 | 英国石油国际有限公司 | 控制液体运动的方法和装置 |
JP2007145984A (ja) * | 2005-11-28 | 2007-06-14 | Sharp Corp | シロキサン系分子膜、その製造方法及びその膜を用いた有機デバイス |
JP5196815B2 (ja) * | 2007-03-09 | 2013-05-15 | キヤノン株式会社 | 螺旋型置換ポリアセチレン構造体、その製造方法、デバイス構造、イオン輸送膜および気体分離膜 |
US7814782B2 (en) * | 2007-08-13 | 2010-10-19 | Baker Hughes Incorporated | Downhole gas detection in drilling muds |
CN101910314A (zh) * | 2007-11-05 | 2010-12-08 | Co2Crc技术股份有限公司 | 气体分离膜及其制备方法 |
JP2009292947A (ja) * | 2008-06-05 | 2009-12-17 | Ebara Corp | 置換ポリアセチレンとその製造方法、電解質膜、電解質膜・電極接合体、電気化学デバイス及び燃料電池 |
CN103534012A (zh) * | 2011-04-08 | 2014-01-22 | 道康宁公司 | 使用环氧官能硅氧烷制备气体选择性膜的方法 |
JP5773419B2 (ja) * | 2011-05-26 | 2015-09-02 | フィガロ技研株式会社 | ガスセンサとガス検出装置 |
JP5885015B2 (ja) * | 2011-09-06 | 2016-03-15 | セイコーエプソン株式会社 | ガスセンサー |
KR20140097714A (ko) * | 2013-01-29 | 2014-08-07 | 한국전자통신연구원 | 다공성 멤브레인이 내장된 마이크로히터를 이용한 mems형 접촉연소식 가스 센서 |
JP6071004B2 (ja) * | 2013-03-29 | 2017-02-01 | 富士フイルム株式会社 | 酸性ガス分離複合膜の製造方法及び酸性ガス分離膜モジュール |
WO2016033638A1 (en) * | 2014-09-02 | 2016-03-10 | Royal Melbourne Institute Of Technology | Gas sensor nanocomposite membranes |
GB2556836B (en) * | 2015-09-17 | 2021-09-22 | Figaro Eng | Electrochemical gas sensor |
CN108778468A (zh) * | 2016-03-09 | 2018-11-09 | 株式会社新生能源研究 | 燃烧系统 |
JP6537154B2 (ja) * | 2016-06-23 | 2019-07-03 | フィガロ技研株式会社 | ガスセンサ |
WO2018053656A1 (en) | 2016-09-21 | 2018-03-29 | Sensirion Ag | Gas sensor |
-
2020
- 2020-03-17 CN CN202080021724.8A patent/CN113574369B/zh active Active
- 2020-03-17 WO PCT/JP2020/011690 patent/WO2020189675A1/ja active Application Filing
- 2020-03-17 US US17/432,973 patent/US12078606B2/en active Active
- 2020-03-17 JP JP2021507369A patent/JP7107494B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010104045A1 (ja) | 2009-03-09 | 2010-09-16 | 住友化学株式会社 | 重合体 |
WO2010110051A1 (ja) | 2009-03-24 | 2010-09-30 | シャープ株式会社 | 化学物質検出装置 |
JP2013242269A (ja) | 2012-05-22 | 2013-12-05 | Figaro Eng Inc | ガスセンサ |
Non-Patent Citations (1)
Title |
---|
TEPLYAKOV, V.V. 外3名,Investigations on the peculiar permeation properties of volatile organic compounds and permanent gas,journal of MEMBRANE SCIENCE,2003年,Vol.220, Issues 1-2,pp.165-175,Abstract |
Also Published As
Publication number | Publication date |
---|---|
CN113574369B (zh) | 2024-09-10 |
US12078606B2 (en) | 2024-09-03 |
US20220163474A1 (en) | 2022-05-26 |
JPWO2020189675A1 (ja) | 2020-09-24 |
CN113574369A (zh) | 2021-10-29 |
WO2020189675A1 (ja) | 2020-09-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7107494B2 (ja) | ガス検出器 | |
US8268630B2 (en) | Differential preconcentrator-based chemical sensor stabilization | |
JP2021181989A5 (ja) | ||
JPWO2020189675A5 (ja) | ||
US20050090018A1 (en) | Method and detector capture of gases | |
US4745796A (en) | Membrane-selective vapor sensing | |
EP3835772A1 (en) | Gas detector | |
JP4401445B2 (ja) | 検知素子 | |
US7992426B2 (en) | Apparatus and method for increasing the selectivity of FET-based gas sensors | |
US20040110299A1 (en) | Systems and methods to control humidity effects on sensor performance | |
JP7090016B2 (ja) | ガスセンサ用フィルタ及びガスセンサ | |
JP2016200547A (ja) | ガスセンサおよびガス検出装置 | |
US20240157294A1 (en) | Compact, microcomposite gas filter | |
JP6334221B2 (ja) | ガス検知器 | |
JP6303211B2 (ja) | ガス検知器 | |
CN112639454B (zh) | 气体检测装置以及气体检测方法 | |
JP2016138782A (ja) | ガス検出装置 | |
EP3908836B1 (en) | Device and method for detecting methanol and/or ethanol | |
JP6370576B2 (ja) | ガス検知器 | |
CN210322956U (zh) | 气体传感器 | |
JP6556288B2 (ja) | ガス検知器 | |
JP7562470B2 (ja) | ガスセンサ | |
EP4505167A1 (en) | Diffusion discriminating gas sensors | |
US20060174691A1 (en) | Method of controlling degradation of trace gas sensors | |
JP3064175B2 (ja) | 前処理装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A529 | Written submission of copy of amendment under article 34 pct |
Free format text: JAPANESE INTERMEDIATE CODE: A5211 Effective date: 20210906 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210906 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20210907 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20220704 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20220704 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7107494 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |