Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene
作者： Chun Yan Ma , Zhen Mu , Jin Jun Li , Yong Gang Jin , Jie Cheng
DOI: 10.1021/JA906274T
关键词:
摘要: Low-temperature catalysts of mesoporous Co3O4 and AU/Co3O4 with high catalytic activities for the trace ethylene oxidation at 0 degrees C are reported in this paper. The were prepared by using nanocasting method, mesostructure was replicated from three-dimensional (3D) cubic KIT-6 silicas. High resolution transmission electron microscopy (HRTEM) studies revealed that {110} facets exposed active surfaces Co3O4, whereas nanosheets precipitation method exhibited most {112} facets. We found significantly more than nanosheets. results indicated crystal facet played an essential role determining its performance. synthesized Au/Co3O4 materials, which gold nanoparticles assembled into pore walls support, stable, highly dispersed, sites. Gold present on readily produced surface-active oxygen species promoted to achieve a 76% conversion C, is highest yet.
acs.org
uq.edu.au
core.ac.uk
rcees.ac.cn参考文章(43)
M. Haruta, S. Tsubota, T. Kobayashi, H. Kageyama, M.J. Genet, B. Delmon, Low-Temperature Oxidation of CO over Gold Supported on TiO2, α-Fe2O3, and Co3O4 Journal of Catalysis. ,vol. 144, pp. 175- 192 ,(1993) , 10.1006/JCAT.1993.1322
Dal-Ryung Park, Bum-Jong Ahn, Hyung-Sang Park, Hiromi Yamashita, Masakazu Anpo, Photocatalytic oxidation of ethylene to CO2 and H2O on ultrafine powdered TiO2 photocatalysts: Effect of the presence of O2 and H2O and the addition of Pt Korean Journal of Chemical Engineering. ,vol. 18, pp. 930- 934 ,(2001) , 10.1007/BF02705621
Ji Feng, Hua Chun Zeng, Size-Controlled Growth of Co3O4 Nanocubes Chemistry of Materials. ,vol. 15, pp. 2829- 2835 ,(2003) , 10.1021/CM020940D
Y. Wang, C.-M. Yang, W. Schmidt, B. Spliethoff, E. Bill, F. Schüth, Weakly ferromagnetic ordered mesoporous Co₃O₄ synthesized by nanocasting from vinyl-functionalized cubic Ia3d mesoporous silica Advanced Materials. ,vol. 17, pp. 53- 56 ,(2005) , 10.1002/ADMA.200400777
Hua Gui Yang, Gang Liu, Shi Zhang Qiao, Cheng Hua Sun, Yong Gang Jin, Sean Campbell Smith, Jin Zou, Hui Ming Cheng, Gao Qing Lu, None, Solvothermal synthesis and photoreactivity of anatase TiO(2) nanosheets with dominant {001} facets. Journal of the American Chemical Society. ,vol. 131, pp. 4078- 4083 ,(2009) , 10.1021/JA808790P
An-Min Cao, Jin-Song Hu, Han-Pu Liang, Wei-Guo Song, Li-Jun Wan, Xiu-Li He, Xiao-Guang Gao, Shan-Hong Xia, Hierarchically Structured Cobalt Oxide (Co3O4): The Morphology Control and Its Potential in Sensors Journal of Physical Chemistry B. ,vol. 110, pp. 15858- 15863 ,(2006) , 10.1021/JP0632438
K. S. W. Sing, Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984) Pure and Applied Chemistry. ,vol. 57, pp. 603- 619 ,(1985) , 10.1351/PAC198557040603
Zhengping Hao, Daiyun Cheng, Yun Guo, Yihong Liang, Supported gold catalysts used for ozone decomposition and simultaneous elimination of ozone and carbon monoxide at ambient temperature Applied Catalysis B-environmental. ,vol. 33, pp. 217- 222 ,(2001) , 10.1016/S0926-3373(01)00172-2
Xiuyan Xu, Jinjun Li, Zhengping Hao, Wei Zhao, Chun Hu, Characterization and catalytic performance of Co/SBA-15 supported gold catalysts for CO oxidation Materials Research Bulletin. ,vol. 41, pp. 406- 413 ,(2006) , 10.1016/J.MATERRESBULL.2005.08.003
Timothy A. Crowley, Kirk J. Ziegler, Daniel M. Lyons, Donats Erts, Håkan Olin, Michael A. Morris, Justin D. Holmes, Synthesis of Metal and Metal Oxide Nanowire and Nanotube Arrays within a Mesoporous Silica Template Chemistry of Materials. ,vol. 15, pp. 3518- 3522 ,(2003) , 10.1021/CM034139V