2014-03-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/685187摘要：此計畫的重點為在以 DMSO 為溶劑的系統下，以接有官能基的中孔徑碳奈米材料 (MCNs) 作為催化劑，並於最佳條件下將纖維素一步轉化成生質燃料。生質燃料的來源為生質物，其中特別是以來自無法食用的木質纖維廢棄物最受人矚目。我們將於此處提出兩個有關纖維素轉換為生質燃料的新概念：第一點是合成並利用表面積大、具疏水性以及含多種官能基的 MCNs 當作有效的固體催化劑；另一點則是在具經濟效益的溶劑 (亦即DMSO) 下直接將纖維素轉化為5-羥甲基糠醛 (HMF)。首先我們計畫設計出一個適合的反應器，並使該反應在不含 MCNs 催化劑的 DMSO 系統下操作於數種不同組合的反應條件中。其各種參數，例如:反應時間、溫度和反應物與溶劑的比例都必須最佳化以獲得 HMF 的最大產率。接下來，我們會將印度合作者 (Dr. Bhaumik) 所合成的各種多官能化的 MCNs 作特性分析，並藉此了解 MCNs 的結構特性以及其官能化的情形。之後，為了要了解在 DMSO 系統下的轉化機制，MCNs 會被應用於不同起始物 (如:果糖、葡萄糖、纖維雙糖及纖維素) 生成HMF的反應中。我們希望藉由這些構想能得到有效的催化劑以及反應系統，並使纖維素轉換成生質能源的反應不再僅限於實驗室的研究而是可以應用於工業上的大量生產使用。<br> Abstract: This project is focused on one-step cellulose conversion to biofuels under optimized reaction conditions in dimethyl sulfoxide (DMSO) systems with the presence of functionalized mesoporous carbon nanomaterials (MCNs) as effective heterogeneous catalysts. Biofuels generate from biomass, especially from inedible lignocellulosic residues, are attracting great attention. Here we propose a cellulose-to-biofuels conversion with two new concepts. One is the synthesis and utilization of MCNs exhibiting large surface area, hydrophobicity, and multi-functionalities as an efficient solid catalyst, and the other is the direct conversion of cellulose to 5-hydroxymethylfurfural (HMF) in an economically favorable solvent (i.e., DMSO) system. We plan to first design a suitable reactor and to conduct the reaction under several combinations of operating variables in DMSO system without MCNs catalysts. Several parameters such as reaction time, temperature, and the ratio of reactants to solvent will be optimized in order to obtain the maximum yield of 5-HMF. Second, various kinds of functionalized MCNs synthesized by our Indian collabor (Dr. Bhaumik) will be characterized in order to understand the structural properties and functionalities of MCNs. After that, MCNs will be used as catalysts in the production of HMF converted separately from different starting materials (e.g., frucotse, glucose, cellubiose, and cellulose) in order to understand the conversion mechanism in DMSO systems. We expect that the presenting propose will provide effective catalysts and reaction systems to converse cellulose into useful biofuels not only in a small scale in the lab but also suitable for scale-up for industrial applications.生質物轉換纖維素5-羥甲基糠醛中孔徑碳奈米材料DMSO異相催化劑biomass conversioncellulose5-hydroxymethylfurfuralmesoporous carbon nanomaterialsdimethyl sulfoxideheterogeneous catalysis