| abstract |
Invention relates to the preparation of a kind of copper bismuth/SiO 2 catalyst.It is characterized in that being prepared for copper bismuth/SiO 2 catalyst with " one kettle way ", copper oxide content is 10 40%, and bi content is 1 10%, and remaining is silicon dioxide.Copper bismuth species high dispersive, at silicon dioxide surfaces externally and internally, improves the reaction center of catalyst, enhances the wearability of catalyst, decreases the precipitation degree of copper ion.In the application of alkynes aldehyde reaction synthesis Isosorbide-5-Nitrae butynediols, copper bismuth catalyst activity is good, and selectivity is high, and copper species precipitation amount is relatively low. |