Hydrothermal Degradation of Cellulose at Temperature from 200 to 300 °C,Industrial & Engineering Chemistry Research

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Hydrothermal Degradation of Cellulose at Temperature from 200 to 300 °C
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-17 , DOI: 10.1021/acs.iecr.8b00332
Tanja Gagić ₁ , Amra Perva-Uzunalić ₁ , Željko Knez _{1,

2} , Mojca Škerget ₁

Affiliation

Cellulose was treated with subcritical water in a batch reactor within a temperature range of 200–300 °C and reaction time of 5–60 min. The main phases, such as water-soluble fraction, acetone-soluble fraction and solid residue (remaining cellulose or char), were separated and analyzed. The analysis of water-soluble phase was done by HPLC equipped with UV and RI detector, whereas acetone-soluble phase was analyzed by GC–MS. Total sugar content was determined by the phenol-sulfuric acid colorimetric method. The properties of char such as specific surface area, pore volume, and pore diameter were determined by gas adsorption method. A water-soluble phase mainly consists of sugar monomers and monomer degradation products, while acetone-soluble phase, referred to also as bio-oil, consists of furans, phenols, carboxylic acids, aldehydes, ketones, and high molecular compounds. The reaction mechanism of cellulose in subcritical water has been proposed based on the obtained results.

中文翻译：

在200至300°C的温度下纤维素的水热降解

在分批反应器中，在200–300°C的温度范围内，反应时间为5–60分钟，用亚临界水处理纤维素。分离并分析了主要相，例如水溶性级分，丙酮可溶级分和固体残留物（剩余的纤维素或炭）。水溶性相的分析是通过装有UV和RI检测器的HPLC进行的，而丙酮相的分析则通过GC-MS进行分析。总糖含量通过苯酚硫酸比色法测定。通过气体吸附法测定炭的特性，例如比表面积，孔体积和孔径。水溶性相主要由糖单体和单体降解产物组成，而丙酮可溶相（也称为生物油）由呋喃，酚，羧酸，醛，酮，和高分子化合物。根据所得结果，提出了纤维素在亚临界水中的反应机理。

更新日期：2018-04-17

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