Investigating Mesoporosity in Hierarchical Aluminophosphates

Optimising catalyst lifetime and performance is pivotal to enhancing the sustainability of industrial catalytic processes, allowing greater product yields, at lower temperatures, with less regular catalyst regeneration. As such Hierarchically Porous SAPOs (HP-SAPOs) have been developed, where mesopores are also incorporated into the material, aiding reactant and product diffusion, and extending catalyst lifetime. We have recently developed a range of HP-SAPO materials by including the mesopore template; DMOD in the AlPO synthesis, to tailor mesopore formation. Thus, we intend to investigate a sequence of HP-SAPO-5 materials, with increasing quantities of DMOD to examine the topology and connectivity of the mesopores, whilst simultaneously exploring the influence of the siliceous layer formed within Hierarchical SAPO-5 using SANS.

优化催化剂寿命与性能，对提升工业催化过程的可持续性至关重要，可在更低反应温度下实现更高的产物收率，并减少催化剂的再生频次。为此，科研人员开发了多级孔SAPO材料（Hierarchically Porous SAPOs，HP-SAPOs），在其骨架中引入介孔结构，以促进反应物与产物的扩散，进而延长催化剂寿命。本团队近期在AlPO（Aluminophosphate）合成体系中引入介孔模板剂DMOD，通过定制化调控介孔的形成过程，制备了一系列HP-SAPO材料。基于此，本研究拟对一系列DMOD添加量依次递增的HP-SAPO-5材料开展探究，以考察介孔的拓扑结构与连通性；同时借助小角中子散射（Small Angle Neutron Scattering），剖析多级孔SAPO-5内部形成的硅质层所带来的影响。