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Ag-Cu Bimetallic Nanoparticles Prepared by Microemulsion Method as Catalyst for Epoxidation of Styrene
Joint Authors
Wang, Hong-Kui
Yi, Chao-Yong
Tian, Li
Wang, Wen-Juan
Fang, Jian
Zhao, Ji-Hua
Shen, Wei-Guo
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-09-13
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Ag/Cu bimetallic nanocatalysts supported on reticulate-like γ-alumina were prepared by a microemulsion method using N2H4·H2O as the reducing agent.
The catalysts were activated by calcination followed with hydrogen reduction at 873K, and the properties were confirmed using various characterization techniques.
Compared with metal oxides particles, Ag-Cu particles exhibited smaller sizes (<5 nm) after calcination in H2 at 873K.
XPS results indicated that the binding energies changed with the Ag/Cu ratios, suggesting that increasing the copper content gave both metals a greater tendency to lose electrons.
Furthermore, Ag-Cu bimetallic nanoparticles supported on γ-alumina showed better catalytic activity on the epoxidation of styrene as compared with the corresponding monometallic silver or copper.
The styrene oxide selectivity could reach 76.6% at Ag/Cu molar ratio of 3/1, while the maximum conversion (up to 94.6%) appeared at Ag/Cu molar ratio of 1/1 because of the maximum interaction between silver and copper.
American Psychological Association (APA)
Wang, Hong-Kui& Yi, Chao-Yong& Tian, Li& Wang, Wen-Juan& Fang, Jian& Zhao, Ji-Hua…[et al.]. 2011. Ag-Cu Bimetallic Nanoparticles Prepared by Microemulsion Method as Catalyst for Epoxidation of Styrene. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-997713
Modern Language Association (MLA)
Wang, Hong-Kui…[et al.]. Ag-Cu Bimetallic Nanoparticles Prepared by Microemulsion Method as Catalyst for Epoxidation of Styrene. Journal of Nanomaterials No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-997713
American Medical Association (AMA)
Wang, Hong-Kui& Yi, Chao-Yong& Tian, Li& Wang, Wen-Juan& Fang, Jian& Zhao, Ji-Hua…[et al.]. Ag-Cu Bimetallic Nanoparticles Prepared by Microemulsion Method as Catalyst for Epoxidation of Styrene. Journal of Nanomaterials. 2011. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-997713
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-997713