CAJ | 학술논문

以甲醇为液化剂、浓硫酸为催化剂,对竹子、杨木、松木和桉木四种生物质原料的加压液化进行了实验研究。结果表明,在200益下反应30 min后,这些生物质原料可转化得到气体、固体残渣和液体生物油三种产品,且竹子的液化率最高。将竹子液化产物进一步分级处理,得到烷基多糖苷和木素解离多酚两类化学品。其中,多糖苷产品的主要成分为己糖苷类化合物,占83.38%(质量分数)；多酚类产品的主要成分为4-乙基-2-甲氧基苯酚、丁香酚和3,4-二甲氧基苯酚等,占65.79%(质量分数)。同时,根据原料的物质构成和液化油的组成结构分析,提出了液化反应的机理：纤维类生物质中的纤维素和半纤维素在酸性条件下发生醇解反应生成甲基糖苷,小部分甲基糖苷进一步转化生成乙酰丙酸甲酯；原料中的木质素在降解过程中,由于酚羟基和甲氧基的供电子效应,使Cα-Caromatic键发生断裂,生成苯酚、愈创木酚等酚类物质。
이갑순위액화제、농류산위최화제,대죽자、양목、송목화안목사충생물질원료적가압액화진행료실험연구。결과표명,재200익하반응30 min후,저사생물질원료가전화득도기체、고체잔사화액체생물유삼충산품,차죽자적액화솔최고。장죽자액화산물진일보분급처리,득도완기다당감화목소해리다분량류화학품。기중,다당감산품적주요성분위기당감류화합물,점83.38%(질량분수)；다분류산품적주요성분위4-을기-2-갑양기분분、정향분화3,4-이갑양기분분등,점65.79%(질량분수)。동시,근거원료적물질구성화액화유적조성결구분석,제출료액화반응적궤리：섬유류생물질중적섬유소화반섬유소재산성조건하발생순해반응생성갑기당감,소부분갑기당감진일보전화생성을선병산갑지；원료중적목질소재강해과정중,유우분간기화갑양기적공전자효응,사Cα-Caromatic건발생단렬,생성분분、유창목분등분류물질。
The liquefaction of ligno-cellulosic biomass materials of bamboo, poplar, pine and eucalyptus woods was investigated in methanol under high pressure with H2 SO4 as catalyst. The results indicated that the biomass materials are converted into bio-gas, solid residue and bio-oil after reaction at 200℃ for 30 min. The bio-oil can be further separated into a variety of high value-added products such as alkyl polyglycosides, levulinate acid esters, and polyphenols. Alkyl polyglycosides is the main component of the liquefied products and accounts for 83. 38% by weight;besides, phenolic products are mainly composed of 4-ethyl-2-methoxyphenol, eugenol and 3, 4-dimethoxyphenol, which account for about 65. 79% by weight. Considering the molecular structure of lingo-cellulosic materials, it was proposed that cellulose and hemicellulose are transformed to alkyl glucoside, levulinate esters, etc. with methanol catalyzed by sulfuric acid under high pressure. Due to electron donating effects of phenolic hydroxyl and methoxy groups, guaiacol, phenol and a series of phenolic compounds are formed through the cleavage of C-C bond of guaiacyl units in lignin.