<br/>A reliable method for encapsulation of transition metal nanoparticles (6-8 nm particles) in halloysite has been developed. The new transition metal@halloysite nanocomposite material was employed in ligand free catalytic hydrogenation and cross-coupling reactions. The Pd@Hal nanocomposite was found to be a highly efficient room temperature catalyst for Suzuki-Miyaura cross-coupling reactions that gave high yields of a diverse array of coupling products in n-PrOH:H<sub>2</sub>O (5:2) within 1 h. The catalytic system was remarkably effective with a broad scope of substrates. Further, the catalyst was easily recovered and recycled without significant loss of catalytic activity.

Studies directed toward the development of transition metal-halloysite nanocomposite materials for organic transformations

2019 Fall National Meeting

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