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factisfact: 金币+10, 基金HEPI+1 2013-04-25 08:59:34
factisfact: 金币+10, 基金HEPI+1 2013-04-25 08:59:34
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中文摘要： 纤维素乙醇作为第二代液体燃料已成为世界能源界的研究热点，但目前存在酸水解糖类产物分解严重、对后续发酵微生物产生抑制和毒害，酶水解缺乏高效预处理方法、纤维素酶成本高的问题，本研究依据生物质本身三大组分的特点，提出以高温液态水（酸浓度为零）水解作为半纤维素的水解方法，对纤维素采用酸浓度在0.2%以内的超低酸水解的方法，并将二种方法统一定义为超低酸水解。通过自行设计的2套多功能水解试验台和先进的仪器分析手段，研究了模化物和不同种类生物质在高温液态水和不同超低酸环境下生物质各组分的水解规律，并建立了相关的动力学模型；依据生物质本身含有金属盐的特点，引入金属盐助催化剂，优化了金属盐超低酸水解工况，在此基础上分析了金属盐助催化机理。本研究为形成环保、高效的生物质水解方法打下了理论基础，更为超低酸-纤维素酶-燃料乙醇工艺做了理论铺垫。自立项以来，共发表（接收）期刊论文12篇，其中国际期刊4篇，全部SCI收录，EI收录论文7 篇；另外，课题组成员参加国际学术会议6次，参加国内各级会议4次，发表会议论文6篇；基于本项目的研究成果申请发明专利3项，授权1项，培养研究生4名，其中2名硕士生已毕业。 中文主题词： 纤维素类生物质，超低酸水解，高温液态水水解，金属盐助催化剂 英文摘要: As the second generation liquid fuel, cellulosic ethanol has become tropical research spot in energy field in the world. But there are still exist some bottlenecks halting its development. According to the feature of the three main components of lignocellulose, the extremely low acids(ELA) hydrolysis is proposed in this project.The research on the hydrolysis reaction mechanism of lignocellulosic biomass under ELA with different acids and metal ions as the catalyst was investegated by two facillities set up ourselves. And by the advanced test instruments, the reaction process were inspected from appearance to molecular. Simultaneously the kinetic models were set up and the metal catalysts were drawn into the hydrolysis system. These work lay the theoretical foundation for the formation of environmental friendly and effective hydrolysis method.During the project research,20 papers are published or accepted among them 4 papers are belong to international SCI jounals and 7 papers are accepted by EI, 6 papers are published in conferences home and abroad, 3 patents are applied and one of them is authorized.Two postgraduate students graduated among the 4 students joining the reasearch work. |
2楼2013-04-24 15:00:34
