| 초록 |
The ordered mesoporous alumina (OMA) material is widely used for the chemical industry due to the high specific surface area, large volume, and texture properties such as uniform pore size. Many researchers have been investigated in tunable pore size and structure by using the nonionic surfactant and cationic surfactant. The purpose of this study confirms that the effect of the types of nonionic template on the dispersion of Pd in OMA synthesis. The OMA was prepared by sol-gel method with different types of block copolymer such as Pluronic P123, and Pluronic F127. The Pd supported on OMA with different pore structures catalyst prepared by deposition-precipitation method. The characteristics of prepared Pd/OMA catalysts were investigated by small angle XRD, XRD, N2-physisorption, FE-TEM, and CO-Chemisorption. The result of OMA small angle XRD shows the strong peak around 1° regardless of a types of template, indicating the P6mm hexagonal symmetry. We also confirmed that the FE-TEM image of Pd/OMA catalyst shows a good arrangement of pore size and Pd distribution. From these results, we can be concluded that distribution of Pd was influenced by the uniform pore size of supports. |
