| 초록 |
There has been an observation that CO2 could play roles as soft oxidant, promoter and enhancer. In those experiences, the hydrogen scavenger activity of CO2 over specific catalysts were proven and to be utilized in the aromatization from alcohols and lower hydrocarbons. This report will deal CO2 as another example of an enhancer for the dehydrogenation of alcohols over bimetallic catalysts. The designed catalysts were prepared on a platelet mesoporous silica, which has 2D hexagonal short channel, with basic oxide and/or metallic components like Ag, Cu, and Pd etc.. The catalytic behavior of alcohols with CO2 was studied over oxidation of various alcohols into corresponding aldehydes. And the selectivity on dehydrogenated products rather than dehydration products as well as CO2 effects were dependent on acid-basic properties of catalysts. CO2 played a role as an enhancer in the dehydrogenation activity of alcohols by removal of formed H2. |
