Oxidation and characterization of active carbon AG-5
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2021-03-29 15:50
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546.26 (11)
Inorganic chemistry (444)
SM ISO690:2012
GOREACIOC (ARAPU), Tatiana. Oxidation and characterization of active carbon AG-5. In: Chemistry Journal of Moldova, 2015, nr. 1(10), pp. 76-83. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2015.10(1).11
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Chemistry Journal of Moldova
Numărul 1(10) / 2015 / ISSN 1857-1727 /ISSNe 2345-1688

Oxidation and characterization of active carbon AG-5
DOI: https://doi.org/10.19261/cjm.2015.10(1).11
CZU: 546.26

Pag. 76-83

Goreacioc (Arapu) Tatiana12
 
1 Institute of Chemistry of the Academy of Sciences of Moldova,
2 Institute of Ecology and Geography of the ASM
 
Disponibil în IBN: 15 iulie 2015


Rezumat

The surface chemistry of the commercial active carbon AG-5 has been modifi ed by oxidation with concentrated nitric acid. The structural changes caused by oxidative treatment were estimated on the basis of nitrogen adsorption-desorption isotherms and thermal analysis. Boehm titration method and infrared spectral analysis have been used in order to evaluate surface chemistry characteristics of active carbon samples. After oxidation process the amount of total acidic groups on oxidized active carbon surface (AG-5ox) increases by about 6 times in comparison with unmodifi ed sample (AG-5). The concentration of the acidic groups on

Cuvinte-cheie
active carbon, oxidation, surface properties, thermal analysis, infrared spectroscopy.