Preparation of Ga-beta-alumina for high purity Ga extraction

为了制备一种器件材料ga - β -氧化铝，对众所周知的超离子导体na - β -氧化铝进行了库仑滴定。滴定池为（+）|GaCl_2(L)+Ga(L)| na - β -氧化铝|GaCl_2(L)|（-）。滴定的最佳条件为210℃，电压小于2 V。连续供电超过100小时。x射线吸收光谱的测量证实了Na与Ga的完全交换。这种新发明的材料，ga - β -氧化铝基本上是一个六方结构，包括尖晶石块。c轴的基元长度从22.512 (A)增加到22.735 (A)，而A轴的基元长度没有随交换过程的变化而变化。用na - β -氧化铝测定了液态Na-In和Na-Bi的热力学性质。

In order to make a deviced material, the Ga-beta-alumina, the Coulomb titration has been carried out for Na-beta-aiumina which is well-known as one of superionic conductors. The cell for the titration is (+)|GaCl_2(L)+Ga(L)|Na-beta-alumina|GaCl_2(L)|(-). The best conditions for titration were 210ﾟC and the electric voltage less than 2 V, respectively. A continuous current was supplied for more than 100 hours. The fully exchange from Na to Ga was recognized by the measurements of X-ray absorption spectra.The newly deviced material, Ga-beta-alumina has basically a hexagonal structure including spinel block. The fundamental length in the c-axis was increased from 22.512 (A) to 22.735 (A), while that in the a-axis was not varied with the exchange procedure.Thermodynamic properties of liquid Na-In and Na-Bi were also measured by using the Na-beta-alumina.