| 氧浓度对近临界水中纤维素分解的影响 |
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| 引用本文： | 吕秀阳,SAKODA Akiyoshi,SUZUKI Motoyuki.氧浓度对近临界水中纤维素分解的影响[J].太阳能学报,2002,23(4):467-471. |
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| 作者姓名： | 吕秀阳 SAKODA Akiyoshi SUZUKI Motoyuki |
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| 作者单位： | 1. 浙江大学二次资源化国家专业实验室,杭州310027
2. 东京大学生产技术研究所,东京106-8558 |
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| 基金项目： | 浙江省分析测试基金 (浙大仪 (2 0 0 0 )第 2号 )，浙江省自然科学基金资助项目 (J990 0 2 ) |
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| 摘 要： | 研究了不同初始氧浓度对纤维素在近临界水中分解的影响，实验结果表明，氧浓度显著地影响产物总碳收支平衡，液相不同组分的收率、气体的产量以及气相产物的组成，微量氧对产物总碳收支平衡影响不大，而对液相不同组分的收率有一定的影响。从实验结果可以看出，离子型反应机理在纤维素水解的第一步中起主导作用。而单糖的进一步分解是一个以自由基反应机理为主的过程。
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| 关 键 词： | 氧浓度 近临界水 纤维素 分解 生物质 |
| 文章编号： | 0254-0096(2002)04-0467-05 |
| 修稿时间： | 2000年11月6日 |
EFFECTS OF OXYGEN ON THE NEAR-CRITICAL WATER DECOMPOSITION OF CELLULOSE |
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| SAKODA Akiyoshi,SUZUKI Motoyuki.EFFECTS OF OXYGEN ON THE NEAR-CRITICAL WATER DECOMPOSITION OF CELLULOSE[J].Acta Energiae Solaris Sinica,2002,23(4):467-471. |
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| Authors: | SAKODA Akiyoshi SUZUKI Motoyuki |
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| Abstract: | Effects of initial oxygen concentration on the nearcritical water decomposition of cellulose were studied. The initial oxygen concentrations were from 0 mmol/L to 34.38 mmol/L. The results showed that initial oxygen concentration had significant influences on the total carbon balance, the yields of some aqueous phase products, the gas output and its composition. The study on the effect of trace quantities of oxygen was also conducted. Evident influence on the yields of some aqueous phase products could be observed, while little influence on the total carbon balance was detected.From these results,we could conclude that the dominant reactions for the first step of celluose decomposition were in ionic mechanism,while the dominant reactions of monose decomposition are in free radical mechanisn. |
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| Keywords: | cellulose near critical water oxygen decomposition |
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