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New high-temperature palladium detectors for oxygen determination

Part II. Principles and investigations on various designs of a continuous detector

Neue Hochtemperatur-Palladium-Detektoren zur Sauerstoffbestimmung

II. Prinzip und Untersuchung verschiedener Konstruktionsentwürfe eines kontinuierlichen Detektors

  • Original Papers
  • Oxygen Determination
  • Published:
Fresenius' Zeitschrift für analytische Chemie Aims and scope Submit manuscript

Zusammenfassung

Ein neuer Hochtemperatur-Detektor zur kontinuierlichen Sauerstoffbestimmung wird vorgeschlagen. Wasserstoff diffundiert bei erhöhter Temperatur durch eine Wand aus metallischem Palladium und reagiert mit dem im zu analysierenden Gas vorhandenen Sauerstoff. Die resultierende Temperaturdifferenz zwischen der Palladiumwand und der Umgebung dient als Maß für den Sauerstoffgehalt. Bei gegebener Gasstromgeschwindigkeit ist die Signalgröße direkt proportional der Sauerstoffkonzentration, was die Richtigkeit der abgeleiteten Grundformel für die Signalgröße bestätigt. Die Anwendbarkeit des Detektors direkt im heißen Gas wurde sowohl im Labor- als auch im industriellen Maßstab bestätigt.

Summary

A new high-temperature detector for the continuous determination of oxygen is presented. Hydrogen diffuses at elevated temperature through a wall made of metallic palladium and reacts with oxygen contained in the analysed gas. The resultant difference between the palladium wall temperature and the ambient temperature provides the measure of the oxygen content. At a given gas-flow rate the output signal is directly proportional to the oxygen concentration. This confirms the correctness of the derived general equation for the output signal. The applicability of the detector for direct operation in hot gases has been confirmed by both laboratory experiments and industrial testing.

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References

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Author information

Authors and Affiliations

  1. Institute of Inorganic Chemistry and Technology, Technical University of Gdańsk, Majakowskiego 11/12, Poland

    E. Kozłowski & T. Górecki

  2. Refinery of Gdańsk, Elbląska 135, Gdańsk, Poland

    M. Bownik

Authors
  1. E. Kozłowski
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  2. T. Górecki
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  3. M. Bownik
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Additional information

Part I: see [1]

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Kozłowski, E., Górecki, T. & Bownik, M. New high-temperature palladium detectors for oxygen determination. Z. Anal. Chem. 323, 249–253 (1986). https://doi.org/10.1007/BF00464084

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  • DOI: https://doi.org/10.1007/BF00464084

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