Nitration of sulfate lignin under homogeneous conditions studied by electron spectroscopy
| Autor: | N. Yu. Kuzyakov, V. A. Veshnyakov, A. Yu. Garkotin, Yu. G. Khabarov, G. V. Komarova |
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| Rok vydání: | 2016 |
| Předmět: |
Nitrous acid
Chemistry Induction period Inorganic chemistry 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology complex mixtures 01 natural sciences Redox 0104 chemical sciences chemistry.chemical_compound Nitric acid Nitration Nitro Lignin Sulfate 0210 nano-technology |
| Zdroj: | Russian Chemical Bulletin. 65:2925-2931 |
| ISSN: | 1573-9171 1066-5285 |
| DOI: | 10.1007/s11172-016-1679-2 |
| Popis: | The nitration of sulfate lignin by nitric acid in an aqueous-dioxane medium under homogeneous conditions was studied. The method proposed makes it possible to synthesize nitrated lignin with the content of one nitro group per 1.5–2 phenylpropane units. At low consumptions of nitric acid, the nitration starts after an induction period, the duration of which decreases with increasing temperature. The presence of the induction period is related to redox transformations forming nitrous acid that nitrosates lignin. |
| Databáze: | OpenAIRE |
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