LAUSR

In the present research, a new dendritic fibrous nanosilica (DFNS) based nanocatalyst (DFNS/Dy2Ce2O7) that has high surface zone as well as easy availability of active zones has been properly expanded using an easy approach. DFNS that possess high surface zone is functionalized by amino groups working as the anchors such that the nanoparticles of Dy2Ce2O7 are fine-dispersed onto the DFNS microspheres fibres, without any aggregation. The nanoparticles of Dy2Ce2O7 are produced by a green approach in the attendance of gum of ferula assa-foetida of Dy(NO3)3 and (NH4)2Ce(NO3)6 as ceric and dysprosium sources. The structural evaluation of the samples proved the synthesis of Dy2Ce2O7 NPs. Moreover, a straight way for the production of 3-aryl-2-oxazolidinones by carbon dioxide, olefins, and anilines was obtained utilizing nano catalyst of DFNS/Dy2Ce2O7 in the lack of solvent. The reaction works properly at moderate states. This method that is cheap and simple may be used to different olefins that has proper to excellent 3-aryl-2-oxazolidinones productions. The catalyst may be simply recycled for ten times without considerable losing the activity of its catalytic.