Encaging Palladium Nanoparticles in Chitosan Modified Montmorillonite for Efficient, Recyclable Catalysts
文献类型：期刊论文
| 作者 | Zeng, MF; Wang, YD; Liu, Q; Yuan, X; Zuo, SF; Feng, RK; Yang, J; Wang, BY; Qi, CZ; Lin, Y |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2016 |
| 卷号 | 8期号:48页码:33157-33164 |
| 关键词 | heterogeneous catalysis palladium montmorillonite chitosan positron annihilation |
| DOI | 10.1021/acsami.6b09895 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Metal nanoparticles, once supported by a suitable scaffolding material, can be used as highly efficient heterogeneous catalysts for numerous organic reactions. The challenge, though, is to mitigate the continuous loss of metals from the supporting materials as reactions proceed, so that the catalysts can be recycled multiple times. Herein, we combine the excellent chelating property of chitosan (CS) and remarkable stability of montmorillonite (MMT) into a composite material to support metal catalysts such as palladium (Pd). The in situ reduction of Pd2+ into Pd-0 in the interstices of MMT/CS composites effectively encages the Pd-0 nanoparticles in the porous matrices, while still allowing for reactant and product molecules of relatively small sizes to diffuse in and out the matrices. The prepared Pd-0@MMT/CS catalysts are highly active for the Heck reactions of aromatic halides and alkenes, and can be recycled 30 times without significant loss of activities. Positron annihilation lifetime analysis and other structural characterization methods are implemented to elucidate the unique compartmentalization of metal catalysts in the composite matrices. As both CS and MMT are economical and abundant materials in nature, this approach may facilitate a versatile platform for developing highly recyclable, heterogeneous catalysts containing metal nanoparticles. |
| WOS关键词 | COUPLING REACTIONS ; POSITRON-ANNIHILATION ; SUZUKI-MIYAURA ; HETEROGENEOUS CATALYSTS ; SONOGASHIRA REACTIONS ; HYBRID MICROSPHERES ; DOUBLE-BONDS ; FREE-VOLUME ; HECK ; HYDROGENATION |
| 语种 | 英语 |
| WOS记录号 | WOS:000389624600061 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/260365]  |
| 专题 | 中国科学院高能物理研究所 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zeng, MF,Wang, YD,Liu, Q,et al. Encaging Palladium Nanoparticles in Chitosan Modified Montmorillonite for Efficient, Recyclable Catalysts[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(48):33157-33164. |
| APA | Zeng, MF.,Wang, YD.,Liu, Q.,Yuan, X.,Zuo, SF.,...&王宝义.(2016).Encaging Palladium Nanoparticles in Chitosan Modified Montmorillonite for Efficient, Recyclable Catalysts.ACS APPLIED MATERIALS & INTERFACES,8(48),33157-33164. |
| MLA | Zeng, MF,et al."Encaging Palladium Nanoparticles in Chitosan Modified Montmorillonite for Efficient, Recyclable Catalysts".ACS APPLIED MATERIALS & INTERFACES 8.48(2016):33157-33164. |
入库方式： OAI收割
来源：高能物理研究所
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