两相共生共存分子筛及结构效应在催化裂化反应中的作用

项目名称： 两相共生共存分子筛及结构效应在催化裂化反应中的作用

项目编号： No.21276278

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： 巩雁军

作者单位： 中国石油大学（北京）

项目金额： 80万元

中文摘要： 根据多活性中心协同作用在反应中的潜在优势，原位构筑两相共生共存分子筛，使两类分子筛发挥各自结构特点，而且进行微结构互补，互调，从而带来特殊的催化效果。本项目设计针对FCC催化剂助剂材料的两相共生共存分子筛体系，可提供多活性中心，易调控分子筛酸性质；营造微孔－微孔－介孔多级结构的反应场所，提高活性位的可接近性，提高分子筛择形能力和平衡二次裂化能力，从而发展共生共存分子筛晶体结构、活性位结构和晶粒大小、空间维度等微观-介观集成方法。借助于类固相晶化方法制备分子筛技术思想，包括前躯体导向、模板组装、过程控制等特征的分子筛制备化学内容，发展晶面择优取向、形貌结构调控的介观-宏观集成技术。利用先进的SAXS技术，丰富分子筛真实微观结构表征的内涵。笔者深信，项目实施将形成多维化、多尺度、高活性的分子筛新体系，在此基础上对其形成过程中结构畸变、活性位变化以及构效关系的研究，提高FCC催化剂的研究水平。

中文关键词： 分子筛；共生共存；微结构；催化裂化；

英文摘要： As we know, the multiple types of active sites in co-crystalline zeolite structure plays very important roles in catalytic reaction due to the synergic effect of active centers from different kind of zeolites. In this program, the novel co-crystalline structures have been designed and in situ synthesis strategy have been carried out to obtain the co-crystallined material by intergrowth of two different zeolites. The both zeolites in co-crystalline material display not only their individual microscopic structure features, but also give prominence to their microstructure complementarity, resulting in unique catalysis performance. Fluid catalytic cracking (FCC) is one of the most petroleum refining processes, development of the high effective catalyst and its catalyst additive is very desirable all the time. Based on the structure requirement of FCC catalyst additive for enhancement of propylene and gasoline octane number，the novel co-crystalline zeolite material (such as EUO/MRE, MFI/MRE co-crystalline structures) has been designed in this program. For example, EU-1 (EUO) zeolite displays 1-D channel system with 10-MR openings (4.1×5.4 ?) running along the direction connected to the side pocket by 12 MR in the (001) direction.The 12-MR side pockets are 6.8 ×5.8 ? wide and 8.1 ? deep. This intriguing topologic str

英文关键词： zeolite；co-crystalline；microstructure；catalytic cracking；