新型低碳烷烃脱氢介孔碳非金属催化剂的设计合成及性能研究

项目名称： 新型低碳烷烃脱氢介孔碳非金属催化剂的设计合成及性能研究

项目编号： No.51302154

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 刘蕾

作者单位： 山东科技大学

项目金额： 25万元

中文摘要： 本课题针对丙烷直接脱氢制丙烯反应中存在的催化剂的稳定性差和丙烯选择性低的难点问题，拟设计合成具有特定表面活性基团的介孔碳非金属催化剂。系统考察合成条件和表面改性方法对所制备的介孔碳催化剂的结构和物化性质及其表面特性的影响。并以此为依据优化合成方法，进一步提高催化剂的催化性能，筛选出新型的、具有较好丙烯选择性和反应稳定性的介孔碳催化剂。同时将脱氢反应体系拓展到其他的低碳烷烃，考察介孔碳催化剂在正丁烷脱氢和1-丁烯脱氢反应中的催化性能，根据它们的相应催化反应活性和选择性，确定有利于丁二烯生成的活性基团和表面特性，建立催化剂体系构效关系，探讨反应机理，为高活性、高选择性和高稳定性的低碳烷烃脱氢催化剂的开发、应用提供理论指导。

中文关键词： 介孔碳；硼掺杂；丙烷脱氢；碳球；

英文摘要： Developing new efficient catalyst systems to improve catalytic performance on propane dehydrogenation, especially allowing long-time production of propylene with high selectivity at higher propane conversions is of great importance. In this project, metal-free mesoporous carbon with active surface functions are adopt as catalyst for propane dehydrogenation. In order to anchore more active functional groups, surface modification is introduced. The influence of synthesis and surface modification techniques on the porous struture, types of surface functions and acid-base properties are studied. Mesoporous carbon catalysts with high catalytic activity and stability will be present through optimization of synthesis method. Furthermore, the obtained metal-free mesoporous carbon catalysts is performed to catalyze n-butane and 1-butene dehydrogenation. The structure-activity relationship and the possible reaction mechanism are also investigated. The research results of surface science and theory will provide fundments for designing catalysts, directing highly active catalysts with high selectivity and long catalytic stability for catalytic light alkane dehydrogenation.

英文关键词： mesoporous carbon；B-doped；propane dehydrogenation；carbon spheres；