Microstructure and catalytic performances of chitosan intercalated montmorillonite supported palladium (0) and copper (II) catalysts for Sonogashira reactions
文献类型：期刊论文
| 作者 | Wang BY(王宝义) ; Liu, Q; Xu, MD; Zhao, J; Yang, Z; Qi, CZ; Zeng, MF; Xia, R; Cao, XZ; Wang, BY
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| 刊名 | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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| 出版日期 | 2018 |
| 卷号 | 113页码:1308-1315 |
| ISSN号 | 0141-8130 |
| DOI | 10.1016/j.ijbiomac.2018.03.066 |
| 文献子类 | Article |
| 英文摘要 | In this study, an efficient heterogeneous catalytic material including Pd-0 nanoparticles and Cu2+ cations supported on montmorillonite/chitosan (MMT/CS) composite was prepared by solution intercalation and complexion methods. The valence states of Pd (both Pd(0) and Pd(II) coexisting) and Cu (mainly Cu(II)) of the Pd/Cu2+@MMT/CS catalyst were confirmed by the X-ray photoelectron spectroscopy (XPS) characterization. The d(001) spacing was enlarged from 1.25 nm (MMT) to 1.94 nm (Pd-0/Cu2+@MMT/CS). Pd-0/Cu2+CMMT/CS catalyst had obviously bigger specific surface area (S-BET) and total pore volume (V-p) than pure MMT. High resolution transmission electron microscopy (HR-TEM) observation of the Pd-0/Cu2+CMMT/CS catalyst showed that separated Pd nanoparticles sized below 3 nm dispersed well both in the interlayer space and surface of MMT layers. The positron annihilation lifetime spectroscopy (PALS) was very sensitive to the microstructure changes caused by the formation of nano particles Pd after reduction of Pd2+/Cu2+@MMT/CStoPd(0)/Cu2+@MMT/CS. The prepared Pd-0/Cu2+@MMT/CS catalysts are highly active for the Sonogashira reactions of aromatic halides and alkynes in H2O/ether solution, and can be recycled 6 times. The leaching of Cu species is much quicker than Pd species during recycling, which should be the main reason for the decrease in efficiency of the recycled Pd-0/Cu2+@MMT/CS catalysts. (C) 2018 Published by Elsevier B.V. |
| 电子版国际标准刊号 | 1879-0003 |
| WOS关键词 | COUPLING REACTIONS ; RECYCLABLE CATALYSTS ; ACETYLENE DERIVATIVES ; REUSABLE CATALYST ; GREEN SYNTHESIS ; ARYL IODIDES ; NANOPARTICLES ; EFFICIENT ; PD ; HECK |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry ; Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000432503100150 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285925]  |
| 专题 | 中国科学院高能物理研究所_中国散裂中子源 高能物理研究所_实验物理中心 高能物理研究所_多学科研究中心 |
| 通讯作者 | Cao XZ(曹兴忠) |
| 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 | Wang BY,Liu, Q,Xu, MD,et al. Microstructure and catalytic performances of chitosan intercalated montmorillonite supported palladium (0) and copper (II) catalysts for Sonogashira reactions[J]. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,2018,113:1308-1315. |
| APA | 王宝义.,Liu, Q.,Xu, MD.,Zhao, J.,Yang, Z.,...&曹兴忠.(2018).Microstructure and catalytic performances of chitosan intercalated montmorillonite supported palladium (0) and copper (II) catalysts for Sonogashira reactions.INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,113,1308-1315. |
| MLA | 王宝义,et al."Microstructure and catalytic performances of chitosan intercalated montmorillonite supported palladium (0) and copper (II) catalysts for Sonogashira reactions".INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 113(2018):1308-1315. |
入库方式： OAI收割
来源：高能物理研究所
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