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Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Chemistry, микрокристаллическая целлюлоза, карбонизация, окислительная модификация, поверхностные группы, адсорбционные и каталитические свойства, Q, QD1-999, Science, microcrystal cellulose, carbonization, oxidative modification, surface groups, adsorption and catalytic properties
The surface modification of carbonized at 450 °C microcrystal cellulose (MCC-450) by the oxidative agents solutions of different strength: 30% H2O2, 3N H2SO4, oleum and chlorosulfonic acid HSO3Cl results in preparation of carbon materials (CM) with different degrees of surface oxidation. The obtained CM were characterized using FTIR, BET, elemental and X-ray spectral analyses. The obtained results showed that more carboxylic and hydroxyl surface oxygen groups were introduced into CM composition as a result of oleum and HSO3Cl oxidation process than by the oxidative solutions of Н2О2 и 3N H2SO4. Significant quality of surface oxygen in the MCC/oleum and MCC/HSO3Cl samples is part of НSO3- groups, where the S content was 2,3–2,5% at. It has been found that oxidized sample MCC/oleum reveals activity in test reactions of cellulose catalytic hydrolysis and esterification of acetic acid with ethanol.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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    • Received July 1, 2013
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