Pd-loaded superparamagnetic mesoporous NiFe2O4 as a highly active and magnetically separable catalyst for Suzuki and Heck reactions

✍ Scribed by Zhe Gao; Yingjun Feng; Fangming Cui; Zile Hua; Jian Zhou; Yan Zhu; Jianlin Shi

• Book ID: 103835326
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 897 KB
• Volume: 336
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2010.12.009

✦ Synopsis

A superparamagnetic solid catalyst has been successfully synthesized by loading palladium nanoparticles into the pore network of a mesoporous NiFe 2 O 4 support (Pd/NF300), which was used as a magnetically separable and highly active catalyst for Suzuki and Heck C-C coupling reactions. Various techniques were employed to characterize the synthesized NiFe 2 O 4 supports and Pd-loaded catalysts. The Pd/NF300 catalyst showed high activity for both Suzuki and Heck reactions even under a very low Pd using amount (0.08 mol% Pd based on aryl halide). Moreover, the catalyst could be magnetically separated, recycled, and showed a very slight reduction in catalytic activity after five cycles. A synergetic catalytic effect between the well dispersed Pd 0 and the basic mesoporous structure of magnetic supports has been proposed to understand its greatly enhanced catalytic activities.