TY - JOUR
T1 - The electrochemistry of tellurium in methylene chloride
AU - Liftman, Y.
AU - Albeck, M.
AU - Goldschmidt, J. M.E.
AU - Yarnitsky, Ch
PY - 1984/12
Y1 - 1984/12
N2 - It was found that TeCl4 in methylene chloride (containing tetrabutylammonium perchlorate as a supporting electrolyte) is reduced to TeCl2, Te0 and Te-2 in potential applied. Two reduction waves are observed during the reduction of TeCl4 at a platinum rde (Ep1 = 0.08 ± 0.02 V, Ep2 = -1.10 ± 0.02 V) due to the reduction of TeCl4 to Te and Te-2 respectively. A cathodic deposition of tellurium from TeCl4 is followed by anodic stripping wave (Ep1 = 0.42 ± 0.02 V), corresponding to the oxidation of Te to TeCl2. It has been shown that reduction of TeCl4, or TeCl-26 to Te causes coating of the electrode with metallic tellurium, on whose surface chloride ions are strongly bonded. It was found that when the electrolysis solution contains excess of chloride ion with respect to TeIV the peak potentials of the cathodic waves shift to more cathodic values (Ep1 = 0.30 ± 0.02 V, Ep2 = -1.25 ± 0.02 V). After cathodic deposition of at least a monolayer of tellurium from such a solution two anodic waves appear (Ep1 = 0.12 ± 0.03 V, Ep2 = 0.24 ± 0.03 V) which are both due to the oxidation of Te to TeII.
AB - It was found that TeCl4 in methylene chloride (containing tetrabutylammonium perchlorate as a supporting electrolyte) is reduced to TeCl2, Te0 and Te-2 in potential applied. Two reduction waves are observed during the reduction of TeCl4 at a platinum rde (Ep1 = 0.08 ± 0.02 V, Ep2 = -1.10 ± 0.02 V) due to the reduction of TeCl4 to Te and Te-2 respectively. A cathodic deposition of tellurium from TeCl4 is followed by anodic stripping wave (Ep1 = 0.42 ± 0.02 V), corresponding to the oxidation of Te to TeCl2. It has been shown that reduction of TeCl4, or TeCl-26 to Te causes coating of the electrode with metallic tellurium, on whose surface chloride ions are strongly bonded. It was found that when the electrolysis solution contains excess of chloride ion with respect to TeIV the peak potentials of the cathodic waves shift to more cathodic values (Ep1 = 0.30 ± 0.02 V, Ep2 = -1.25 ± 0.02 V). After cathodic deposition of at least a monolayer of tellurium from such a solution two anodic waves appear (Ep1 = 0.12 ± 0.03 V, Ep2 = 0.24 ± 0.03 V) which are both due to the oxidation of Te to TeII.
UR - http://www.scopus.com/inward/record.url?scp=0021587117&partnerID=8YFLogxK
U2 - 10.1016/0013-4686(84)89009-x
DO - 10.1016/0013-4686(84)89009-x
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AN - SCOPUS:0021587117
SN - 0013-4686
VL - 29
SP - 1673
EP - 1678
JO - Electrochimica Acta
JF - Electrochimica Acta
IS - 12
ER -