新型水热方法降解纤维素及降解产物分析

以微晶纤维素（microctTstallinece llulose，MCC）为原料，首次采用水热合成反应方法，分别利用硫酸、磷钨酸以及高碘酸为降解剂对微晶纤维素进行降解处理，气质联用仪（GC-MS）分析降解产物，解析降解产物结构，并分析降解机制。结果表明：新型水热方法降解微晶纤维素较完全；不同降解剂处理所得产物中均含有机酸、酮、醛、醇和酯类化合物；采用降解剂不同，降解所得产物结构不同，含量有差异；通过反应机制分析获得降解机制迥异。图3表4参25

Liquefied products of microcrystalline cellulose using hydrolysis decomposition

To explore the effect and the degradation pathway of each acid catalyst degradation of microcrys- talline cellulose. Mieroerystalline cellulose （MCC） was utilized as the raw material with a hydrothermal synthe- sis reaction being used for degradation. The MCC degradation products were treated with sulfuric acid, sodium periodate, and phosphotungstie acid and then analyzed by gas chromatography-mass spectrometry （GC-MS） for structure and mechanisms of the degradation products. Results showed that when different acids acted on mi- eroerystalline cellulose, they gained organic acids, ketones, aldehydes, alcohols, or esters. However, different acids received specific degradation products with varying structure and content. Analyzing the reaction mecha- nism showed that degradation mechanisms differed. Ch, 3 fig. 4 tab. 25 ref.]