GB1286298A - Process and apparatus for measuring the concentration of a component of a liquid - Google Patents

Process and apparatus for measuring the concentration of a component of a liquid

Info

Publication number
GB1286298A
GB1286298A GB59372/69A GB5937269A GB1286298A GB 1286298 A GB1286298 A GB 1286298A GB 59372/69 A GB59372/69 A GB 59372/69A GB 5937269 A GB5937269 A GB 5937269A GB 1286298 A GB1286298 A GB 1286298A
Authority
GB
United Kingdom
Prior art keywords
cell
concentration
hydrazine
membrane
dec
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.)
Expired
Application number
GB59372/69A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1286298A publication Critical patent/GB1286298A/en
Expired 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
    • G01N27/26—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
    • G01N27/404—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors
    • G01N27/4045—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors for gases other than oxygen
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
    • H01M8/04194—Concentration measuring cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/22—Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen
    • H01M8/222—Fuel cells in which the fuel is based on compounds containing nitrogen, e.g. hydrazine, ammonia
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Sustainable Development (AREA)
  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fuel Cell (AREA)

Abstract

1286298 Electro-chemical analysis SIEMENS A G 4 Dec 1969 [5 Dec 1968] 59372/69 Heading G1N [Also in Division H1] The concentration of e.g. hydrazine in an electrolyte is monitored by an electro-chemical cell with one electrode (e.g. a platinized nickel grid) behind a porous membrane (e.g. of asbestos fibre paper) and a bias of about 1 volt applied so that it operates in the diffusion limiting range. Modifications:-The membrane may be formed with coarse pores at the margins away from the electrode; an ion-exchanger resin membrane may be used; the cell may be formed as a ceramic "testtube", Fig.3 (not shown). Control. The cell may be used to control the hydrazine pump of a fuel-cell system in accordance with the deviation of hydrazine concentration from a reference valve derived from the cell load current in conventional manner, Fig.4 (not shown).
GB59372/69A 1968-12-05 1969-12-04 Process and apparatus for measuring the concentration of a component of a liquid Expired GB1286298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1812870A DE1812870C3 (en) 1968-12-05 1968-12-05 Device for measuring the concentration of liquid reactants dissolved in the electrolyte of fuel elements and fuel batteries

Publications (1)

Publication Number Publication Date
GB1286298A true GB1286298A (en) 1972-08-23

Family

ID=5715336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB59372/69A Expired GB1286298A (en) 1968-12-05 1969-12-04 Process and apparatus for measuring the concentration of a component of a liquid

Country Status (3)

Country Link
DE (1) DE1812870C3 (en)
FR (1) FR2030084B1 (en)
GB (1) GB1286298A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629664A (en) * 1984-10-31 1986-12-16 Hitachi, Ltd. Liquid fuel cell

Also Published As

Publication number Publication date
DE1812870C3 (en) 1978-11-30
DE1812870B2 (en) 1978-03-30
FR2030084A1 (en) 1970-10-30
FR2030084B1 (en) 1974-06-14
DE1812870A1 (en) 1970-06-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee