JP6418587B2 - 窒素酸化物濃度測定及びアンモニアスリップ検出センサー - Google Patents
窒素酸化物濃度測定及びアンモニアスリップ検出センサー Download PDFInfo
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims description 419
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims description 400
- 229910021529 ammonia Inorganic materials 0.000 title claims description 198
- 238000005259 measurement Methods 0.000 title claims description 125
- 238000001514 detection method Methods 0.000 title claims description 75
- 239000007784 solid electrolyte Substances 0.000 claims description 227
- 239000003054 catalyst Substances 0.000 claims description 67
- 230000003647 oxidation Effects 0.000 claims description 65
- 238000007254 oxidation reaction Methods 0.000 claims description 65
- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 19
- -1 oxygen ion Chemical class 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 15
- 239000007772 electrode material Substances 0.000 claims description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 10
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 6
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910020599 Co 3 O 4 Inorganic materials 0.000 claims description 3
- 229910018657 Mn—Al Inorganic materials 0.000 claims description 3
- 229910003310 Ni-Al Inorganic materials 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- 239000010970 precious metal Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 37
- 238000010438 heat treatment Methods 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 10
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 7
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 7
- 238000010531 catalytic reduction reaction Methods 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 229910000510 noble metal Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- 230000009257 reactivity Effects 0.000 description 5
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910002089 NOx Inorganic materials 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Chemical compound [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 description 2
- 239000002003 electrode paste Substances 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 2
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- 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
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- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3275—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
- G01N27/3277—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction being a redox reaction, e.g. detection by cyclic voltammetry
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- 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
- G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/28—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly
- G01N25/30—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using electric temperature-responsive elements
- G01N25/32—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using electric temperature-responsive elements using thermoelectric elements
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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
- G01N27/4073—Composition or fabrication of the solid electrolyte
- G01N27/4074—Composition or fabrication of the solid electrolyte for detection of gases other than oxygen
-
- 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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- 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
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
-
- 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
- G01N33/0037—NOx
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
- G01N33/0054—Ammonia
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Molecular Biology (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Exhaust Gas After Treatment (AREA)
Description
200:加熱部
20:固体電解質
21:アンモニア酸化触媒層
30:第1の電極
40:第2の電極
50:第3の電極
60:集電体
61:端子
70:電源装置
71:測定機器
90:ヒーター
150:第4の電極
151:第1の電極層
152:第3の電極層
250:第5の電極
Claims (22)
- 酸素イオン伝導性の固体電解質と、
前記固体電解質と接し、窒素酸化物に対して反応性がある第1の電極と、
前記固体電解質と接し、前記第1の電極と分離され、窒素酸化物に対して反応性がある第2の電極と、
前記固体電解質と接し、前記第2の電極と分離されており、前記第1の電極と並列に接続されており、アンモニアに対して反応性がある第3の電極と、
並列に接続された前記第1の電極及び第3の電極と、前記第2の電極との間に電流又は電圧を印加するように構成された電源装置と、
並列に接続された前記第1の電極及び第3の電極と、前記第2の電極との間の電位差または電流を測定するように構成された測定装置を含む窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が板状に形成され、
前記固体電解質の一方側面に、前記第1の電極、前記第2の電極及び前記第3の電極が形成されている請求項1に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が板状に形成され、
前記固体電解質の一方側面に、前記第1の電極及び前記第3の電極が形成され、
前記固体電解質の前記一方側面に対向する他方側面に、前記第2の電極が形成されている請求項1に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - アンモニア酸化触媒層が前記固体電解質の表面に形成されている請求項1から3のいずれか1項に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、当該アンモニア酸化触媒層と前記固体電解質の一方側面との間に、前記第1の電極および前記第3の電極が配置される状態で、前記固体電解質の一方側面に形成されている請求項4に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、Pt、Pd、Rh、Ir、Ru、Agの中から選ばれた少なくとも一つ以上の物質を含んでいる請求項4に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、貴金属が分散された多孔性セラミックを含む請求項4に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、Co3O4、MnO2、V2O5、Ni−Al2O3、Fe−Al2O3、Mn−Al2O3、CuO−Al2O3、Fe2O3−Al2O3、Fe2O3−TiO2、Fe2O3−ZrO2の中から選ばれた少なくとも一つ以上の物質を含む請求項4に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、イオン交換ゼオライトを含む請求項4に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記第3の電極は、ZnO、SnO2とIn2O3からなる群から選択された少なくとも一つ以上の物質を含んでいる請求項1から9のいずれか1項に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 酸素イオン伝導性の固体電解質と、
前記固体電解質と接し、窒素酸化物に対して反応性がある第2の電極と、
前記固体電解質と接し、前記第2の電極と分離され、窒素酸化物に対して反応性がある第1の電極層とアンモニアに対して反応性がある第3の電極層を含む第4の電極と、
前記第2の電極と前記第4の電極との間に電流又は電圧を印加するように構成された電源装置と、
前記第2の電極と前記第4の電極との間の電位差または電流を測定するように構成された測定装置を含む窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が板状に形成され、
前記固体電解質の一方側面に、前記第2の電極および前記第4の電極が形成されている請求項11に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が板状に形成され、
前記固体電解質の一方側面に、前記第2の電極が形成され、
前記固体電解質の前記一方側面に対向する他方側面に、前記第4の電極が形成されている請求項11に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - アンモニア酸化触媒層が前記固体電解質の表面に形成されている請求項11から13のいずれか1項に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、当該アンモニア酸化触媒層と前記固体電解質の一方側面との間に、前記第2の電極および前記第4の電極が配置される状態で、前記固体電解質の一方側面に形成されている請求項14に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 酸素イオン伝導性の固体電解質と、
前記固体電解質と接し、窒素酸化物に対して反応性がある第2の電極と、
前記固体電解質と接し、前記第2の電極と分離され、窒素酸化物に対して反応性がある第1の電極材料とアンモニアに対して反応性がある第3の電極材料を含む第5の電極と、
前記第2の電極と前記第5の電極との間に電流又は電圧を印加するように構成された電源装置と、
前記第2の電極と前記第5の電極との間の電位差または電流を測定するように構成された測定装置を含む窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が板状に形成され、
前記固体電解質の一方側面に、前記第2の電極および前記第5の電極が形成されている請求項16に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が板状に形成され、
前記固体電解質の一方側面に、前記第2の電極が形成され、
前記固体電解質の前記一方側面に対向する他方側面に、前記第5の電極が形成されている請求項16に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - アンモニア酸化触媒層が前記固体電解質の表面に形成されている請求項16から18のいずれか1項に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記アンモニア酸化触媒層は、当該アンモニア酸化触媒層と前記固体電解質の一方側面との間に、前記第2の電極および前記第5の電極が配置される状態で、前記固体電解質の一方側面に形成されている請求項19に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
- 前記固体電解質が板状に形成され、
前記固体電解質と接する板状の支持体を備え、
前記支持体が、前記固体電解質の一方側面または当該一方側面と対向する他方側面に設けられた請求項1から20のいずれか1項に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。 - 前記固体電解質が多孔質である請求項1から21のいずれか1項に記載の窒素酸化物濃度測定及びアンモニアスリップ検出センサー。
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