Facile synthesis of Ag-CuO/SBA-15 for aerobic epoxidation of olefins with high activity.
作者： Ang Li , Yinhai Tang , Cheng Dong , Ge Wang
关键词:
摘要: An efficient 'structure-property' catalyst Ag-CuO/SBA-15 for aerobic epoxidation of olefins was designed and prepared via a simple grinding method, which provided dynamic assembly driving force to push the precursors into channels step by step. Partial melting on precursor particles surface is necessary synthesizing catalysts. During thermal process, partial Cu(NO3)2 first adhered AgNO3 because N possess stronger interaction with than OH- SBA-15, then mixture were sucked SBA-15 Finally, high dispersion both Ag CuO nanoparticles formed in after calcination. The between CuO, characterized high-resolution transmission electron microscopy, UV-vis x-ray powder diffraction, enhances catalytic activity catalysts, giving conversion selectivity epoxides. reaction mechanism as follows, solvent xylene molecule oxidized form methyl-benzaldehyde (R1), moved peroxidic radical (R2), attacked trans-stilbene C=C bonds obtain This synergistic effect shows toward trans-stilbene.
harvard.edu
sci-hub.se 参考文章(33)
Yinhai Tang, Mu Yang, Wenjun Dong, Li Tan, Xiaowei Zhang, Peng Zhao, Chaohao Peng, Ge Wang, Temperature difference effect induced self-assembly method for Ag/SBA-15 nanostructures and their catalytic properties for epoxidation of styrene Microporous and Mesoporous Materials. ,vol. 215, pp. 199- 205 ,(2015) , 10.1016/J.MICROMESO.2015.05.040
Soumen Dutta, Chaiti Ray, Sougata Sarkar, Anindita Roy, Ramkrishna Sahoo, Tarasankar Pal, Facile Synthesis of Bimetallic Au-Pt, Pd-Pt, and Au-Pd Nanostructures: Enhanced Catalytic Performance of Pd-Pt Analogue towards Fuel Cell Application and Electrochemical Sensing Electrochimica Acta. ,vol. 180, pp. 1075- 1084 ,(2015) , 10.1016/J.ELECTACTA.2015.09.062
Ying Huang, Hiroko Ariga, Xinlei Zheng, Xinping Duan, Satoru Takakusagi, Kiyotaka Asakura, Youzhu Yuan, Silver-modulated SiO2-supported copper catalysts for selective hydrogenation of dimethyl oxalate to ethylene glycol Journal of Catalysis. ,vol. 307, pp. 74- 83 ,(2013) , 10.1016/J.JCAT.2013.07.006
Y. M. Wang, Z. Y. Wu, H. J. Wang, J. H. Zhu, Fabrication of Metal Oxides Occluded in Ordered Mesoporous Hosts via a Solid‐State Grinding Route: The Influence of Host–Guest Interactions Advanced Functional Materials. ,vol. 16, pp. 2374- 2386 ,(2006) , 10.1002/ADFM.200500613
Shaojun Miao, Yan Wang, Ding Ma, Qingjun Zhu, Shutian Zhou, Lingling Su, Dali Tan, Xinhe Bao, Effect of Ag+ cations on nonoxidative activation of methane to C2-hydrocarbons Journal of Physical Chemistry B. ,vol. 108, pp. 17866- 17871 ,(2004) , 10.1021/JP047209+
M. Selvaraj, S.W. Song, S. Kawi, Epoxidation of styrene over mesoporous Zr–Mn-MCM-41 Microporous and Mesoporous Materials. ,vol. 110, pp. 472- 479 ,(2008) , 10.1016/J.MICROMESO.2007.06.036
D. Zhao, Triblock Copolymer Syntheses of Mesoporous Silica with Periodic 50 to 300 Angstrom Pores Science. ,vol. 279, pp. 548- 552 ,(1998) , 10.1126/SCIENCE.279.5350.548
Selim Alayoglu, Anand U. Nilekar, Manos Mavrikakis, Bryan Eichhorn, Ru-Pt core-shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen. Nature Materials. ,vol. 7, pp. 333- 338 ,(2008) , 10.1038/NMAT2156
Yuanhui Zheng, Lirong Zheng, Yingying Zhan, Xingyi Lin, Qi Zheng, Kemei Wei, Ag/ZnO heterostructure nanocrystals: synthesis, characterization, and photocatalysis. Inorganic Chemistry. ,vol. 46, pp. 6980- 6986 ,(2007) , 10.1021/IC700688F
Nuno Batalha, Ludovic Pinard, Yannick Pouilloux, Michel Guisnet, Bifunctional Hydrogenating/Acid Catalysis: Quantification of the Intimacy Criterion Catalysis Letters. ,vol. 143, pp. 587- 591 ,(2013) , 10.1007/S10562-013-1003-9