采用丰富廉价的可再生资源纤维素合成性能优良的生物燃料2,5-二甲基呋喃(DMF)有利于减轻人类对化石燃料的依赖性。然而，对于这个涉及多个催化功能和多个转化步骤的反应，复杂的催化剂体系和繁琐的制备工艺大大降低了规模化生产的可操作性和经济效益。因此开发出多功能固体催化剂和简化反应流程是其研究的重点。本项目拟充分发挥新型碳纳米材料石墨烯的优势，为该反应构建环境友好石墨烯催化剂，实现催化剂多项功能一体化和各步催化反应的高效转化，并进一步利用催化剂、反应物和各步中间产物亲水性/疏水性的差异以及氢气在极性/非极性溶剂中溶解度的差异，建立从亲水相到疏水相连续催化转化的反应体系，实现从亲水相"纤维素→葡萄糖→果糖→5-羟甲基糠醛（HMF）"到疏水相"HMF→DMF"的连续反应。研究结果为构建复杂反应体系催化剂和简化反应流程提供理论依据，为提高纤维素制DMF催化反应性能和实现其一锅法转化提供可能。

Converting readly available and renewable cheap cellulose to high quality biofuel dimethylfuran (DMF) has the potential to reduce societal dependence on fossil-carbon based energy. For this multi-step chemical reaction, however, processes involving a number of catalysts and multi complicated conversion and separation steps will have poor overall economics and viability. Therefore, development of effective multifunctional catalysts and facilitation of the multi-step conversion processes is the key of this cellulosic biofuel production.In this project, some new research ideas and methods are proposed for the reaction taking advantages of the new carbon nano material, graphene. Effective graphene-based multifunctional catalysts will be designed and developed for the purpose of the integration of multiple catalytic functions and the improvement in the catalytic performance of the catalysts. Furthermore, a biphasic continuous conversion system is to be established based on the hydrophilicity or hydrophobicity of the catalysts, the feed and the intermediates of each reaction step, and also on the basis of the higher solubility of H2 in the polar solvent than in the non-polar solvent, in which the continuous reactions from "cellulose → glucose → fructose → HMF" in the hydrophilic phase to "HMF → DMF" in the hydrophobic phase are carried out. The research results will generate previous information for the improvement of multifunctional catalysts and the optimization of complex reaction systems, and will also provide a possibility to realize the one-pot conversion of cellulose to DMF.