多孔性配位高分子のマクロ構造制御による固体触媒の創成

在这项研究中，我们试图通过如下所示的“配位-复制工艺（CRP）”和“陶瓷模拟工程（CME）”来解决PCP基催化剂的宏观结构化。以贝类为Ca ~（2+）前体制备了具有大孔结构的钙基PCP。最初的壳是表面光滑的分级大孔。与方酸反应后，所得样品显示出与初始壳相似的大孔结构。在表面上产生了大量的纳米/微米晶体，表明壳已经成功地复制到基于Ca的PCP。这一结果表明，生物矿物可以转化为钙基PCP，同时保持其大孔结构。通过CMEC陶瓷对PCP进行宏观结构化，以其出色的机械稳定性而闻名。我们的目标是通过CME获得具有优异机械稳定性的PCP催化剂。制备的Al-PCP纳米粒子在重力作用下紧密组装，然后将所得固体在高温下长期活化。最后，CA。获得直径为Icm的散装粒料。高放大率图像说明了大量的大孔是由纳米颗粒组装而成的。这一结果表明，通过CME获得大孔PCPs的独特方法。综上所述，我们成功地通过CRP和CME制备了大孔PCPs。这些宏观结构化方法将用于增强PCP的催化活性。

In this research, we tried to tackle macro-structuring of PCP-based catalysts by "coordination-replication process (CRP)" and "ceramic-mimicking engineering (CME)" as shown below.a. Macro-structuring of PCP by CRPWe utilized shellfish as Ca2+ precursors to make Ca-based PCPs with macroporous structures. The initial shells were of hierarchical macropores with smooth surfaces. After reacting with squaric acid, the obtained samples showed macroporous structures that were similar to the initial shell. The large amount of nano-/microcrystals were created on the surface, suggesting that the shell has been successfully replicated to Ca-based PCPs. This result indicates that biomineral can be converted to Ca-based PCPs with keeping their macroporous structure.b. Macro-structuration of PCP by CMECeramics are well-known for their outstanding mechanical stability. We aimed to obtain PCP-catalyst with outstanding mechanical stability by CME. The prepared Al-PCP nanoparticles were tightly assembled by gravity, and then obtained solids were activated at high temperature for long term. Finally, ca. 1 cm diameter of a bulk pellet was obtained. High-magnification image illustrates that significant amount of macropores are created by assemble of nanoparticles. This result suggests a unique way to obtain macroporous PCPs by CME.In summary, we have successfully prepared macroporous PCPs by CRP and CME. These macro-structuring methods would be used for enhancement of catalytic activity of PCPs.