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1.电解池中,阴阳两极材料一般是惰性材料,都不参与电极反应吗?电解池,尤其是工业化应用中,阴阳两极多为惰性材料只起导电的作用并不参与氧化还原反应图1(电镀和粗铜精炼例外),如氯碱工业和金属的冶炼。但情况也不尽然例如:金属钛、铝的冶炼可以用石墨作阳极、钛网作阴极、熔融CaF2-CaO作电解质,利用图1所示装置获得金属钙,并以钙为还原剂,还原二氧化钛制备金属钛。
1. Electrolytic cell, the cathode material is generally inert material, are not involved in the electrode reaction? Electrolysis cells, especially in industrial applications, the positive and negative poles are mostly inert material only conductive role does not participate in the redox reaction Figure 1 ( Electroplating and briquette refining exceptions), such as chlor-alkali industry and metal smelting. However, the situation is not always the case, for example: titanium metal, aluminum smelting can be graphite anode, titanium mesh as a cathode, molten CaF2-CaO as electrolyte, using the device shown in Figure 1 to obtain metallic calcium, and calcium as a reducing agent, reducing titanium dioxide Titanium metal.