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Development of a Novel Closed Loop UHV‐Apparatus for Coulometric Titrations of Oxygen by Means of λ‐Probes in Three‐Electrode‐Arrangement
Author(s) -
Keller HansLothar,
Wilk Peter
Publication year - 2003
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200300140
Subject(s) - coulometry , yttria stabilized zirconia , loop (graph theory) , electrode , cubic zirconia , closed loop , oxygen , atmosphere (unit) , titration , analytical chemistry (journal) , materials science , chemistry , optoelectronics , physics , inorganic chemistry , engineering , thermodynamics , composite material , control engineering , chromatography , ceramic , organic chemistry , mathematics , combinatorics , electrochemistry
A novel apparatus is described that does not only allow a very wide range of oxygen concentrations to be tuned in and gauged but also facilitates a direct observation of ongoing reactions within. It is principally built up of tubular lambda‐probes made of yttria stabilized zirconia (YSZ) and resembles a closed loop installation, enabling a total control of the inside atmosphere. Long term reactions inside the installation may be observed optically. First results of observed reactions are shown.