Preparation of Large-Size, Superparamagnetic, and Highly Magnetic Fe₃O₄@PDA Core–Shell Submicrosphere-Supported Nano-Palladium Catalyst and Its Application to Aldehyde Preparation through Oxidative Dehydrogenation of Benzyl Alcohols

• Main Authors: Haichang Guo, Renhua Zheng, Huajiang Jiang, Zhenyuan Xu, Aibao Xia
• Format: Article
• Language: English
• Published: MDPI AG 2019-05-01
• Series: Molecules
• Subjects: catalytic dehydrogenation; core–shell structure; dopamine; Fe₃O₄; nano-palladium
• Online Access: https://www.mdpi.com/1420-3049/24/9/1730
• ISSN: 1420-3049

Large-size, superparamagnetic, and highly magnetic Fe₃O₄@PDA core−shell submicrosphere-supported nano-palladium catalysts were prepared in this study. Dopamine was encapsulated on the surface of Fe₃O₄ particles via self-polymerization and then protonated to positively charge the microspheres. PdCl₄^2− was dispersed on the surface of the microspheres by positive and negative charge attraction and then reduced to nano-palladium. With air as oxidant, the catalyst can successfully catalyze the dehydrogenation of benzyl alcohols to produce the corresponding aldehydes at 120 °C.