| Autor: |
Pen, R.Z., Shapiro, I.L., Ambrosovich, I.A. |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| DOI: |
10.34660/inf.2021.82.11.015 |
| Popis: |
Stalks of straw Triticum sp. delignified with hydrogen peroxide and peracetic acid, followed by alkaline extraction. Conditions of the oxidation stage: initial concentration of acetic acid 36%, hydrogen peroxide 12%, sulfuric acid (catalyst for the formation of peracetic acid) 0.45%; hydronic module 3; temperature 85°C; duration 2 hours. The product obtained with a yield of 85.8% was treated with a sodium hydroxide solution at hydromodule 3 and a temperature of 85°C; the concentration of alkali was changed in the range of 2 ... 4%, duration - 0.5 ... 1.5 hours. The maximum yield of technical cellulose of 40.2% in the absence of "lack of penetration" was obtained at an alkali concentration of 3.6% and a duration of 1.5 hours. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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