Metoder til forberedelsevandfri InCl3omfatter hovedsageligt direkte chlorering af metalindium, oxidnedbrydning og chlorering, direkte opvarmning og dehydrering af hydrat, organisk opløsningsmiddelmetode og trinvis opvarmning af chlorering. Placer indiumblokken i et bægerglas, tilsæt 36 procent saltsyre og opvarm. Indium reagerer meget hurtigt i koncentreret saltsyre, og reaktionsformlen er som følger:
2In plus 6HCl plus 8H 2 O= 2InCl3 · 4H 2 O plus 3H 2
The InCl3 solution was obtained by the reaction, and the InCl3 · 4H 2 O crystals were obtained by heating, evaporating, and dehydrating at the lowest level in a microwave oven. Put 29.3 g (about 0.1 mol) InCl3 · 4H 2 O and 100 mL cyclohexane in a 250 mL two reduce necked flask, install a moisture separator, a condenser tube, and a thermometer, and then heat it with an electric heating mantle. With the increase of heating temperature, reflux began, and the reflux liquid was white and turbid, and later clarified, and the solution in the water separator began to layer. With the increase of water output, the solution temperature gradually increased. When the amount of water that came out no longer increased, the heating was stopped, and a large amount of white powdery solid was precipitated at the bottom of the flask. After cooling to room temperature, it was filtered, and after vacuum drying for 2 h, the amount of white powdery solid was 20 g, and the volume of water in the water separator was about 6.8 mL. The entire dehydration process takes about 1.5 h.
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