Activation of hydrochloric acid-CrCl3 · 6H2 solutions with N-alkyfamines |
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| Authors: | D. Sh. Cheng A. Reiner E. Hollax |
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| Affiliation: | (1) Institute of Photographical Chemistry of the Academica Sinica, Peking, China;(2) Fraunhofer-Institut für Solare Energiesysteme, Oltmannstraβe 22, D-7800 Freiburg, Federal Republic of Germany |
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| Abstract: | An economical procedure for the reactivation of aged CrCl3 · 6H2O solutions is required for the practical operation of Fe-Cr-redox cells. N-alkylamines of the general form  (n=0, 1, 2, 3,...) are suited to this application. The best results were achieved with tetraethylene pentamine (n=3). The technique functions without energy addition for a considerable length of time and is easy to manage. The mechanism of the reactivation is discussed. |
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