The effect of modification on the physicochemical characteristics of shungite

被引：0
|
作者：
I. A. Polunina
V. V. Vysotskii
I. N. Senchikhin
K. E. Polunin
I. S. Goncharova
G. A. Petukhova
A. K. Buryak
机构：
[1] Russian Academy of Sciences,Frumkin Institute of Physical Chemistry and Electrochemistry
来源：
Colloid Journal | 2017年 / 79卷
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摘要：
The influence of thermo- and mechanochemical modification of mineral shungite-III (Karelia, Russia) on its chemical composition and physicochemical properties has been studied. A method has been proposed for the mechanochemical modification of shungite, which yields a finely dispersed sorbent with a specific surface area of 70.6 m2/g, a total pore volume of 0.336 cm3/g, and a carbon concentration of higher than 75%. The comparative analysis of the thermolysis of the mineral and modified shungites in air has revealed a difference between the thermal stabilities of the samples. Almost all of the carbon of modified finely dispersed shungite combusts below 500°C, whereas the decomposition of mineral shungite starts above 600°C and only 60% of carbon combusts at 800°C.
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页码：244 / 249
页数：5
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