新型Beta基介微孔材料催化剂的定向合成及柴油超深度脱硫反应机理研究

项目名称： 新型Beta基介微孔材料催化剂的定向合成及柴油超深度脱硫反应机理研究

项目编号： No.21276277

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 化学工业

项目作者： 段爱军

作者单位： 中国石油大学（北京）

项目金额： 80万元

中文摘要： 日益严格的环保法规极大推动了超清洁油品的生产进程。新型高活性超深度加氢脱硫催化剂的研发是技术升级的关键。本研究针对柴油中难脱除硫化物分子尺寸大、存在烷基位阻的特点，定向设计合成酸性适宜、具有三维介微孔梯级孔道结构的Beta-KIT-6复合材料，集介孔材料KIT-6的孔道优势与微孔分子筛Beta的适宜酸性于一体，通过优化调变催化剂孔道结构、酸性及理化性质实现催化剂高HDS活性，为应对超清洁油品生产需求提供性质优良、可定向调控的优质催化剂。同时，采用动力学扩散模型，系统研究不同尺度和结构的模型硫化物分子在梯级孔道材料中的扩散规律；结合催化剂表征结果，探讨催化剂反应活性与其结构性质及扩散性能之间的构效关系。通过加氢反应中间及最终产物分析，结合GC-PFPD、In-situ IR、Raman等方法细致研究复合孔道材料上加氢深度脱硫反应机理和规律，对实现国V标准清洁柴油生产具有重要的理论和应用意义。

中文关键词： 复合介微孔材料；加氢脱硫；超清洁柴油；反应动力学；反应机理

英文摘要： Stringent regulation of environmental protection impels the production of ultra clean diesel. The core of technical upgrading of hydrotreating is the development of novel catalyst. This proposal focuses on the directional synthesis of novel Beta-based hierarchically meso-microporous structure material of Beta-KIT-6 with suitable acidity and tunnel arrays. Based on the typical characteristics of molecular sizes and configurations of sulfides existed in diesel these novel composites combine the structure and acidity superiorities of mesoporous KIT-6 and microporous Beta zeolites. Through the optimization and the directional synthesis of pore structures and acid properties, a kind of novel catalyst with high activity and selectivity will be prepared to meet the production demands of ultra clean diesel. Simultaneously, this research will systematically study the diffusion properties of model sulfide molecules with different sizes and structures over the above novel hierarchically porous materials by adopting kinetics diffusion model. Combined with the characterization results of different analytical technologies, the structure-activity-relationship between these novel catalysts and their performance will be discussed in detail. The hydrodesulfurization mechanisms of reactant molecules over these novel catalysts will

英文关键词： Micro-mesoporous materials；Hydrodesulfurization；Ultra clean diesel；Reaction kinetics；Reaction mechanism