Pt/TiO2催化剂上CO氧化反应动力学研究

doi:10.3866/PKU.WHXB201301181

Abstract

Abstract:

A series of Pt/TiO₂ catalysts were prepared using a deposition-precipitation method and calcined at different temperatures to obtain various Pt particle sizes. The catalysts were tested for catalytic CO oxidation and the kinetics of the reaction was studied. The results showed that the Pt particle size increased with calcination temperature, and that their reactivity for CO oxidation first increased and then decreased with increasing calcination temperature, with the catalyst calcined at 400℃ possessing the highest reactivity. The kinetic investigation revealed that the reaction rate could be described by r=5.4×10^-7p _CO^0.17p_O₂^0.36, suggesting that the reaction followed a Langmuir-Hinshelwood mechanism. Meanwhile, O₂ chemisorption and infrared (IR) spectroscopy of CO chemisorption on the catalysts were conducted to reveal the relationship between the catalyst structure and its catalytic behavior. It was found that the amount of O₂ chemisorption and the intensity of CO chemisorption by IR on the catalysts first increased and then decreased with increasing calcination temperature, which was consistent with the catalytic results and the kinetic equation. This could explain the catalytic behaviors of the catalysts. For example, the highest amounts of chemisorbed O₂ and CO were obtained over the Pt/TiO₂ calcined at 400℃, which resulted in the highest reactivity. Such an enhancement in reactivity was probably due to the strong interaction between Pt and TiO₂ induced by the calcination process.

Key words: CO oxidation, Pt/TiO₂, Metal-support interaction, Reaction kinetics, Chemisorption

LI Na, CHEN Qiu-Yan, LUO Meng-Fei, LU Ji-Qing. Kinetics Study of CO Oxidation Reaction over Pt/TiO₂ Catalysts[J]. Acta Phys. -Chim. Sin. 2013, 29(05), 1055-1062. doi: 10.3866/PKU.WHXB201301181

References

(1) Schryer, D. R.; Upchurch, B. T.; Sidney, B. D.; Brown, K. G.;Hoflund, G. B.; Herz, R. K. J. Catal. 1991, 130, 314. doi: 10.1016/0021-9517(91)90114-J
(2) Yuan, Y. Z.; Kozlova, A. P.; Asakura, K.;Wan, H. L.; Tsai, K.;Iwasawa, Y. J. Catal. 1997, 170, 191. doi: 10.1006/jcat.1997.1752
(3) Haruta, M.; Kobayashi, T.; Sano, H.; Yamada, N. Chem. Lett.1987, 16, 405.
(4) McClure, S. M.; Goodman, D.W. Chem. Phys. Lett. 2009, 469,1. doi: 10.1016/j.cplett.2008.12.066
(5) Fernández-García, M.; Martínez-Arias, A.; Salamanca, L. N.;Coronado, J. M.; Anderson, J. A.; Conesa, J. C.; Soria, J.J. Catal. 1999, 187, 474. doi: 10.1006/jcat.1999.2624
(6) Xiao, X. Y.; Lu, J. Q.; Su, X.W.; Guo, M.; Luo, M. F. ActaPhys. -Chim. Sin. 2009, 25, 561. [肖小燕, 鲁继青, 苏孝文,郭明, 罗孟飞. 物理化学学报, 2009, 25, 561.] doi: 10.3866/PKU.WHXB20090327
(7) Zhu, P. F.; Li, J.; Zuo, S. F.; Zhou, R. X. Appl. Surf. Sci. 2008,255, 2903. doi: 10.1016/j.apsusc.2008.08.033
(8) Yang, Z. Q.; Mao, D. S.; Guo, Q. S.; Gu, L. Acta Phys. -Chim.Sin. 2010, 26, 3278. [杨志强, 毛东森, 郭强胜, 顾蕾. 物理化学学报, 2010, 26, 3278.] doi: 10.3866/PKU.WHXB20101210
(9) Liu, X. S.; Lu, J. Q.; Qian, K.; Huang,W. X.; Luo, M. F.J. Rare. Earth 2009, 27, 418. doi: 10.1016/S1002-0721(08)60263-X
(10) Gardner, S. D.; Hofltmd, G. B.; Schryer, D. R.; Schryer, J.;Upchurch, B. T.; Kielin, E. J. Langmuir 1991, 7, 2135. doi: 10.1021/la00058a027
(11) Hoflund, G. B.; Gardner, S. D.; Schryer, D. R.; Upchurch, B. T.;Kielin, E. J. Appl. Catal. B 1995, 6, 117. doi: 10.1016/0926-3373(95)00010-0
(12) Gardner, S. D.; Hoflund, G. B.; Upchureh, B. T.; Kielin, E. J.;Schryer, J. J. Catal. 1991, 129, 114. doi: 10.1016/0021-9517(91)90015-V
(13) Stark, D. S.; Crccker, A.; Steward, G. J. J. Phys. E: Sci. Instrum.1983, 16, 158. doi: 10.1088/0022-3735/16/2/012
(14) Haruta, M.; Yamada, N.; Kobayashi, T.; Iijima, S. J. Catal.1989, 115, 301. doi: 10.1016/0021-9517(89)90034-1
(15) Tauster, S. J.; Fung, S. C. J. Catal. 1978, 29, 55.
(16) Tauster, S. J.; Fung, S. C.; Garten, R. L. J. Am. Chem. Soc.1978, 170, 100.
(17) Choi, Y. M.; Abernathy, H.; Chen, H. T.; Lin, M. C.; Liu, M. L.ChemPhysChem 2006, 7, 1957.
(18) Alexeev, 1. O. S.; Chin, S. Y.; Engelhard, M. H.; Ortiz-Soto, L.;Amiridis, M. D. J. Phys. Chem. B 2005, 109, 23430. doi: 10.1021/jp054888v
(19) Baker, R. T. K.; Tauster, S. J. Strong Metal Support Interactions;Dumesic, J. A. Ed.; American Chemical Society:Washington D.C. 1986; p 238.
(20) Bond, G. C.; Thompson, D. T. Gold Bull. 2000, 33, 41. doi: 10.1007/BF03216579
(21) Sheintuch, M.; Schmi, J.; Lecthman, Y.; Yahav, G. Appl. Catal.1989, 49, 55. doi: 10.1016/S0166-9834(00)81421-9
(22) Boulahouache, A.; Kous, G.; Lintz, H. G.; Schulz, P. Appl.Catal. A 1992, 91, 115.
(23) Liu,W.; Flytzani-Stephanopoulos, M. J. Catal. 1995, 153, 317.
(24) Jia, A. P.; Hu, G. S.; Meng, L.; Xie, Y. L.; Lu, J. Q.; Luo, M. F.J. Catal. 2012, 289, 199. doi: 10.1016/j.jcat.2012.02.010
(25) Fogler, H. S. Elements of Chemical Reaction Engineering, 4thed.; Pearson Education Inc.: New Jersey, 2006; pp 839-842.
(26) Silvestre-Albero, J.; Serrano-Ruiz, J. C.; Sepúlveda-Escribano,A.; Rodríguez-Reinoso, F. Appl. Catal. A 2005, 292, 244. doi: 10.1016/j.apcata.2005.06.005
(27) Ruppert, A. M.; Paryjczak, T. Appl. Catal. A 2007, 320, 80. doi: 10.1016/j.apcata.2006.12.019
(28) Silvestre-Albero, J.; Sepúlveda-Escribano, A.; Rodríguez-Reinoso, F.; Anderson, A. J. J. Catal. 2004, 223, 179. doi: 10.1016/j.jcat.2004.01.019
(29) Panagiotopoulou, P.; Christodoulakis, A.; Kondarides, D. I.;Boghosian, S. J. Catal. 2006, 240, 114. doi: 10.1016/j.jcat.2006.03.012
(30) Carlsson, P. A.; Österlund, L.; Thormählen, P.; Palmqvist, A.;Fridell, E.; Jansson, J.; Skoglundh, M. J. Catal. 2004, 226, 422.doi: 10.1016/j.jcat.2004.06.009

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Kinetics Study of CO Oxidation Reaction over Pt/TiO₂ Catalysts

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Kinetics Study of CO Oxidation Reaction over Pt/TiO₂ Catalysts