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.

中文翻译：

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绿色合成 Dy2Ce2O7 纳米颗粒固定在纤维状纳米二氧化硅上，用于从烯烃、胺和二氧化碳合成 3-Aryl-2-oxazolidinones

在目前的研究中，一种新的基于树枝状纤维状纳米二氧化硅 (DFNS) 的纳米催化剂 (DFNS/Dy2Ce2O7) 具有高表面积和活性区的容易可用性，已使用简单的方法进行了适当的扩展。具有高表面积的 DFNS 被作为锚的氨基官能化，使得 Dy2Ce2O7 的纳米颗粒精细分散到 DFNS 微球纤维上，没有任何聚集。Dy2Ce2O7 的纳米粒子是通过绿色方法生产的阿魏树胶 Dy(NO3)3 和 (NH4)2Ce(NO3)6 作为铈和镝源。样品的结构评估证明了 Dy2Ce2O7 NPs 的合成。此外，通过二氧化碳、烯烃、在没有溶剂的情况下，利用DFNS/Dy2Ce2O7纳米催化剂获得苯胺。该反应在中等状态下正常工作。这种廉价且简单的方法可用于不同的烯烃，具有优良的3-芳基-2-恶唑烷酮生产。催化剂可以简单地循环使用十次而不会显着损失其催化活性。