Electrochemical behaviour of tellurium and silver telluride at rotating glassy carbon electrode
作者:M. Traore、R. Modolo、O. Vittori
DOI:10.1016/0013-4686(88)80100-2
日期:1988.7
Electrodeposition of tellurium and silver is performed at rotatingglassycarbon disc electrodes. First the mechanism of deposition of tellurium is investigated, and a well defined wave may be observed close to − 0.4 V/sce. On the plateau of this wave a small peak may be noticed at − 0.7 V/sce, and is due to reduction of Te(0) into Te(—II), but a chemical reaction occurs simultaneously between Te(—II)
碲和银的电沉积是在旋转的玻璃碳圆盘电极上进行的。首先,研究碲的沉积机理,并且可以在-0.4 V / sce附近观察到清晰的波。在此波的平台上,可能会在-0.7 V / sce处看到一个小峰,这是由于Te(0)还原成Te(-II),但在Te(-II)和Te之间同时发生了化学反应(IV)通过对流和扩散到达电极,再次导致Te(0),因此沉积物的厚度增加。相反,在不旋转电极的情况下,Te(IV)物种仅通过扩散到达电极,与上述情况相比,其数量更少。因此峰值为− 0.7 V / sce 由于碲沉积物通过还原in Te(-II)溶解而变得很大。
Anodic dissolution of tellurium in acid solutions
作者:S.A. Awad
DOI:10.1016/0013-4686(68)85025-x
日期:1968.4
The potential of telluriumanodes was measured in HClO4, H2SO4 and HNO3 as a function of cd and acid concentration. The results indicate the formation of telluryl ion, TeO2H+, in the pH range 0–0·8, tellurous acid, H2TeO3, above pH 1·8, and both products at intermediate pH. In all these solutions, the over-all reaction rate is governed by the initial discharge of water.
在HClO 4,H 2 SO 4和HNO 3中测量碲阳极的电势,它是cd和酸浓度的函数。结果表明,在pH范围为0-0.8的情况下会生成碲酸根离子TeO 2 H +,在pH值1·8以上的情况下会生成亚碲酸H 2 TeO 3,并且两种产物均处于中等pH值。在所有这些解决方案中,总体反应速率取决于水的初始排放。
Glasses prepared by the melting of stoichiometric compounds
申请人:Allied Chemical Corporation
公开号:US04087511A1
公开(公告)日:1978-05-02
Chemically durable non-silicate glasses derived from compounds including phosphates, borates, arsenates, sulfates, tellurates, tellurites, germanates and the like, are prepared by forming a melt from monobasic compounds of stoichiometric proportions, said melt then being polymerized by suitable means in the melt stage and subsequently cooled to form a desired glass. The resulting glass exhibits properties not normally found in similar glasses prepared from melts of oxides of the same materials.