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硅基介孔材料具有孔径分布均一、孔道结构独特、比表面积高等优点,其在石油产品加氢脱硫(HDS)催化剂载体中的应用成为近年来研究的热点。但在实际应用过程中硅基介孔材料的耐硫性差、路径选择性低等局限性也逐渐显现出来,针对此类问题,近年来的研究集中在硅基材料的改性工作上。本文综述了近年来金属改性的硅基介孔材料应用于油品加氢脱硫的研究现状,重点讨论了铝、钛、锆等金属的引入对硅基介孔材料基本结构(比表面积、孔容和孔径)、酸性和HDS催化活性的影响。分析总结了经金属改性的硅基介孔材料作为HDS催化剂载体的优点和不足,并展望了其未来的应用前景。
Silica-based mesoporous materials have the advantages of uniform pore size distribution, unique pore structure and high specific surface area. Their applications in HDS catalysts for petroleum products have become hot topics in recent years. However, in the practical application of the silicon-based mesoporous materials, poor resistance to sulfur, low path selectivity has gradually emerged, in response to such issues, in recent years, research focused on the modification of silicon-based materials. In this paper, the current research status of metal-modified silicon-based mesoporous materials for hydrodesulfurization of oil products is reviewed. The introduction of metals such as aluminum, titanium and zirconium into the basic structure of silicon-based mesoporous materials (specific surface area, pores Volume and pore size), acidity and HDS catalytic activity. The merits and demerits of metal-modified silicon-based mesoporous materials as HDS catalyst carrier were summarized and analyzed, and their future application prospects were prospected.