活性炭吸附硫脲溶液中的金离子之形态

The Form of Gold Ions Adsorbed by Charcoal from Thiourea

由实验得出活性炭从硫脲溶液中吸附金的特点,根据络合化学原理找到溶液中被吸附离子形态是AuTu^+,AuTu_2^+和Au^+,并解释了实验现象。

The characteristics of gold adsorption by activated carbon from thiourea solution at different temperature and acidities were stud iedexperimentally. It is found that the specieses in thiourea solution were AuTu^+ , AuTu_2^+ and Au^+ according to the principle of complex chemistry. Au^+ was easily adsorbed by carbon than other speciescs. Because of the bisprop(?)rtionation r(?)action of Au^+, more Au^+ would be formed by the decomposition of different specieses of gold complexes, and promoting the adsorption of Au^+. Activated carbon plays a role of catalysis and reduction.