The Nature of Active Centers during Sorption of Cyanide Complexes of Noble Metals on Carbon Sorbents

被引：2
|
作者：
Randin, O. I. [1 ]
Afonina, T. Yu. [1 ]
Dudarev, V. I. [1 ]
Moskaeva, N. Yu. [1 ]
Syrykh, Yu. S. [1 ]
机构：
[1] Irkutsk State Tech Univ, Irkutsk 664074, Russia
来源：
RUSSIAN JOURNAL OF NON-FERROUS METALS | 2008年 / 49卷 / 04期
关键词：
D O I：
10.3103/S1067821208040044
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Carbon sorbents obtained from cannel coal of the Leninsk-Kuznetskii coal field are investigated by EPR spectroscopy. It is established that the sorption capacity of activated carbons by silver increases as the concentration of paramagnetic centers increases, and both parameters are peaked at the activation temperature of similar to 900 degrees C. As the sorption surface, the polyconjugated aromatic system with a delocalized unpaired electron is suggested.
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页码：237 / 240
页数：4
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