IHEP OpenIR  > 中国科学院高能物理研究所  > 中国散裂中子源
Microstructure and catalytic performances of chitosan intercalated montmorillonite supported palladium (0) and copper (II) catalysts for Sonogashira reactions
Liu, Q; Xu, MD; Zhao, J; Yang, Z; Qi, CZ; Zeng, MF; Xia, R; Cao, XZ; Wang, BY; Cao XZ(曹兴忠); Wang BY(王宝义)
2018
Source PublicationINTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
ISSN0141-8130
EISSN1879-0003
Volume113Pages:1308-1315
SubtypeArticle
AbstractIn 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.
DOI10.1016/j.ijbiomac.2018.03.066
WOS KeywordCOUPLING REACTIONS ; RECYCLABLE CATALYSTS ; ACETYLENE DERIVATIVES ; REUSABLE CATALYST ; GREEN SYNTHESIS ; ARYL IODIDES ; NANOPARTICLES ; EFFICIENT ; PD ; HECK
Indexed BySCI ; MEDLINE
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry ; Polymer Science
WOS SubjectBiochemistry & Molecular Biology ; Chemistry, Applied ; Polymer Science
WOS IDWOS:000432503100150
MedlineIDMEDLINE:29550425
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285925
Collection中国科学院高能物理研究所_中国散裂中子源
实验物理中心
多学科研究中心
Corresponding AuthorCao XZ(曹兴忠)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Liu, Q,Xu, MD,Zhao, J,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 Liu, Q.,Xu, MD.,Zhao, J.,Yang, Z.,Qi, CZ.,...&王宝义.(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 Liu, Q,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.
Files in This Item:
File Name/Size DocType Version Access License
20180441.pdf(2720KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Q]'s Articles
[Xu, MD]'s Articles
[Zhao, J]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Q]'s Articles
[Xu, MD]'s Articles
[Zhao, J]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Q]'s Articles
[Xu, MD]'s Articles
[Zhao, J]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.