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Preparation of Large-Size, Superparamagnetic, and Highly Magnetic Fe3O4@PDA Core⁻Shell Submicrosphere-Supported
Haichang Guo1,2, Renhua Zheng3, Huajiang Jiang4
1Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Catalytic Hydrogenation Research Center, Zhejiang University of Technology, Hangzhou 310014, China. hc.g@163.com.
Abstract:
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. PdCl42- 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.
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