| 초록 |
Cerium oxides have been one of the most widely used heterogeneous catalysts particularly in three way catalytic conversion. Controllable preparation of ceria nanotube with high surface area and large pore size still remains a challenge. Recently, much attention has been paid for the development of metal catalysts for the alcohol oxidation using molecular oxygen, and use of some homogeneous transition metal complexes has achieved high activity and selectivity, but there are few excellent heterogeneous catalysts despite offering significant advantages from an environmental standpoint. In this study, ceria nanotube was prepared by nanocasting method by using silica nanotube with large pore diameter of 40 nm to elevate diffusion limitation. According to our previous report, basic oxide catalysts such as CsOx and BaOx make the surface of catalyst more basic, which resulted in enhanced CO2 activation. The basic oxide supported ceria nanotube was prepared by incipient impregnated method and the catalytic activity towards oxidation of alcohol under CO2 was studied. |
