| 刘淑芬,郭会琴,颜流水,李可心,舒婷,马文天.油茶果壳水热碳化液相产物分析[J].农业环境科学学报,2015,34(10):2019-2026. |
| 油茶果壳水热碳化液相产物分析 |
| Analysis of Liquefied Products from Hydrothermal Carbonization of Camellia Oleifera Shell by GC-MS |
| 投稿时间：2015-03-29 |
| DOI：10.11654/jaes.2015.10.026 |
| 中文关键词: 油茶果壳 气相色谱-质谱联用 水热碳化 生物质转化 |
| 英文关键词: Camellia Oleifera shell(COS) GC-MS hydrothermal carbonization biomass conversion |
| 基金项目:国家自然科学基金项目(21165013,21366024);江西省青年科学基金项目(20114BAB213016);江西省重大科技招标项目(赣科发计字[2014]56-6号) |
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| 中文摘要: |
| 采用气相色谱-质谱联用(GC-MS)方法对油茶果壳水热碳化后主要液相产物的组成进行了分析,并推测其水热反应的转化路径.结果表明,在230 ℃、12 h的水热条件下,油茶果壳水热碳化液相产物主要有糠醛、二甲氧基苯酚、甲氧基苯酚、苯酚以及乳酸和乙酰丙酸等.推测该条件下前体的转化过程为:果壳中的纤维素、半纤维素降解为糖类物质,然后糖类物质在水热条件下发生异构化、键断裂、脱水等反应,分解为呋喃衍生物、环状化合物、短链醇和有机酸类等,而果壳中的木质素和单宁则主要断链形成酚类化合物. |
| 英文摘要: |
| The hydrothermal carbonization of biomass has aroused great interest within the context of global climate change. However, there is little information available on the composition of the liquefied products. In this paper, the intermediates in liquid phase from the hydrothermal carbonization of Camellia Oleifera shell(COS) were analyzed with gas chromatography-mass spectrometer(GC-MS), and the possible conversion pathways of COS were also explored. Under the hydrothermal conditions of 230 ℃ and 12 h, the main intermediates detected in the liquid phase included acyclic compounds, phenolic compounds, and cyclic compounds. Most of these compounds, such as furfural, dimethoxy phenol, p-methoxyphenol, phenol, lactic acid and levulinic acid, etc. were recognized by the NIST Library for GC-MS. Based on the fact that the main components of COS are cellulose, hemicellulose and lignin, it could be speculated that the cellulose and hemicellulose in COS were degraded into carbohydrates, which were then converted into furan derivatives, cyclic compounds, short-chain alcohols and short-chain organic acids by the reactions of isomerization, bond breaking and dehydration. The lignin and tannin in COS were converted into phenol and methoxyphenol. |
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