面向重油催化裂化的高效等级催化剂的设计和调控

Catalytic cracking of heavy oil is always a core technology towards one of the "holy grails" of refining industry. Hierarchical catalysts having multiple porous structures certainly are one of most hot research topic in catalysis cracking. Hierarchical structures with hierarchical functions such as zeolites nanocrystals are base of hierarchical catalysis, and also extremely challenging, which has the potential to deliver next-generation industrial catalysts. We have developed a novel quasi-solid-crystalline approach to hierarchical zeolites, and plan to transfer this knowledge to hierarchical structured catalysis constructed by various types of zeolite nanocrystals via multiple-step crystallization and co-crystallization. Such a hierarchical assembly provides a simple and low-cost method for large-scale preparation of hierarchical catalysts. The targets of our proposal are as the following: firstly we will develop a hierarchical assembly and a relevant nanotechnological synthesis methodology for design and controlled-synthesis of the hierarchical structured architectures constructed by various zeolites nanocrystals. Next, the improvement of catalysis stability and the exploration of the structure-function mechanism are absolutely required for further in catalysis cracking. Finally, aiming at applications, the great enhancement of the catalytic activity is essential, and also the up-scale for industry process need to be developed.

重油的催化裂化一直是炼油领域的核心技术。等级孔结构催化剂具有多尺度的结构优势已经成为工业催化裂化应用研究的热点。多类型纳米分子筛同时引入同一等级结构中可以有效地实现多类型催化活性中心一体化，不仅是实现多步催化一步完成的基础，同时也是下一代工业催化剂的重要挑战。我们拟通过原创的半固相转晶技术，通过重结晶和共结晶方法实现多类型纳米分子筛一体化等级组装。此外半固相等级组装的方法还具有简便、成本低和易于放大的特点，对工业放大具有显著的潜能。因此本项目将研究： 1，等级孔结构多类型纳米分子筛一体化的可控调控及多功能化；2，等级孔结构催化剂催化稳定性及纳米结构功能协同催化裂化机制；3，等级孔结构催化剂的催化裂化性能优化和工业放大技术。

重油的催化裂化一直是炼油领域的核心技术。本项目设计的等级孔结构催化剂具有多尺度的结构优势及多类型催化活性中心一体化的功能优势，能够实现多步催化一步完成，为下一代工业催化剂的设计提供了思路。本项目开发的半固相转晶技术，具有简便、成本低和易于放大的特点，对工业放大具有显著的潜能。本项目主要研究了以下三个方面的内容：1，等级孔结构多类型纳米分子筛一体化的可控调控及多功能化；2，等级孔结构催化剂催化稳定性及纳米结构功能协同催化裂化机制；3，等级孔结构催化剂的催化裂化性能优化和工业放大技术。依托项目共发表SCI论文30篇，其中影响因子10以上的5篇，影响因子5-10的11篇，影响因子3-5的7篇，4次被选为 “封面论文”。授权中国国家发明专利3项，在申请专利9项。