427078 Preparation and Catalytic Performances of Functionalized Mesoporous Carbon Materials: A Combined Experimental and Molecular Simulation Study

Wednesday, November 11, 2015
Exhibit Hall 1 (Salt Palace Convention Center)
Xiuqin Dong1,2,3, Lingtao Wang1,2,3, Yifei Chen1,2,3 and Haoxi Jiang1,2,3, (1)R & D Center for Petrochemical Technology, Tianjin University, Tianjin, China, (2)Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China, (3)Key Laboratory of Ministry of Education for Green Chemical Technology, Tianjin, China

Mesoporous carbon materials have been widely studied as prospective catalytic materials because of their uniform mesoporous structure, high specific surface area and large pore volume.

In this work, the materials with ordered mesoporous structure were successfully prepared by both nanocasting method and self-assembly technique in aqueous phase. The surface functionalized methods of mesoporous carbon materials, such as acidity and hydrophobicity modifications, were systematically studied. The effects of pore structure, surface acidity, surface hydrophobicity of mesoporous carbon based solid acid catalysts on the catalytic esterification of free fatty acids (FFAs) in high acid value oil were also systematically investigated. The experimental results showed that high FFA conversion (>90%) could be obtained under the optimized reaction conditions, and the acid value of product oil could be reduced to < 2 mg KOH/g.

Both experimental characterization and molecular simulation method were used to explore the possible mechanism of self-assembly process of mesoporous carbon materials. The results indicated that the content of carbon precursor could affect the thickness and homogeneity of mesopore wall. Moreover, water could play a role to disperse carbon source and template agent in self-assembly system. The proposed mechanism could provide the mesoscopic scale understanding of mesoporous carbon synthesis by self-assembly method.

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