Ultrasonic-assisted synthesis of highly active catalyst Au/MnOx–CeO2 used for the preferential oxidation of CO in H2-rich stream
作者： Yun-Bao Tu , Jin-Yong Luo , Ming Meng , Gang Wang , Jun-Jun He
DOI: 10.1016/J.IJHYDENE.2009.03.015
关键词:
摘要: Abstract A series of nano-gold catalysts supported on binary oxides MOx–CeO2 (atomic ratio M/Ce = 1:1, M = Mn, Fe, Co, Ni) are prepared by deposition–precipitation (DP). An innovative and rather convenient ultrasonic pretreatment the support is employed for Au/MnOx–CeO2 preparation. It found that preferential CO oxidation more active than Au/CeO2. Ultrasonic MnOx–CeO2 further promotes performance Au/MnOx–CeO2, with conversion increased 24 % at 120 °C. Meanwhile, selectivity oxygen to CO2 promoted in whole temperature range, especially 80–120 °C, 15–21%. HR-TEM XRD results indicate favorable formation much smaller gold nanoparticles (
elsevier.com
sci-hub.se 参考文章(39)
Markus M. Schubert, Vojtech Plzak, Jürgen Garche, R. Jürgen Behm, Activity, Selectivity, and Long-Term Stability of Different Metal Oxide Supported Gold Catalysts for the Preferential CO Oxidation in H2-Rich Gas Catalysis Letters. ,vol. 76, pp. 143- 150 ,(2001) , 10.1023/A:1012365710979
Mitsutaka Okumura, Shyunichi Nakamura, Susumu Tsubota, Toshiko Nakamura, Masashi Azuma, Masatake Haruta, Chemical vapor deposition of gold on Al2O3, SiO2, and TiO2 for the oxidation of CO and of H2 Catalysis Letters. ,vol. 51, pp. 53- 58 ,(1998) , 10.1023/A:1019020614336
Wang Xingyi, Kang Qian, Li Dao, Catalytic combustion of chlorobenzene over MnOx–CeO2 mixed oxide catalysts Applied Catalysis B-environmental. ,vol. 86, pp. 166- 175 ,(2009) , 10.1016/J.APCATB.2008.08.009
Johanna Carnö, Magali Ferrandon, Emilia Björnbom, Sven Järås, Mixed manganese oxide/platinum catalysts for total oxidation of model gas from wood boilers Applied Catalysis A: General. ,vol. 155, pp. 265- 281 ,(1997) , 10.1016/S0926-860X(97)80129-9
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
M SOUZA, N RIBEIRO, M SCHMAL, Influence of the support in selective CO oxidation on Pt catalysts for fuel cell applications International Journal of Hydrogen Energy. ,vol. 32, pp. 425- 429 ,(2007) , 10.1016/J.IJHYDENE.2006.10.057
G. Panzera, V. Modafferi, S. Candamano, A. Donato, F. Frusteri, P.L. Antonucci, CO selective oxidation on ceria-supported Au catalysts for fuel cell application Journal of Power Sources. ,vol. 135, pp. 177- 183 ,(2004) , 10.1016/J.JPOWSOUR.2004.04.006
Atilla Bıyıkoğlu, Review of proton exchange membrane fuel cell models International Journal of Hydrogen Energy. ,vol. 30, pp. 1181- 1212 ,(2005) , 10.1016/J.IJHYDENE.2005.05.010
C Song, Fuel processing for low-temperature and high-temperature fuel cells: Challenges, and opportunities for sustainable development in the 21st century Catalysis Today. ,vol. 77, pp. 17- 49 ,(2002) , 10.1016/S0920-5861(02)00231-6
K EVERAERT, Catalytic combustion of volatile organic compounds. Journal of Hazardous Materials. ,vol. 109, pp. 113- 139 ,(2004) , 10.1016/J.JHAZMAT.2004.03.019