Figure 1. Effect of various TiO2 on CO conversion over 1% Pt/TiO2-X.
Figure 2. XPS Pt 4f spectra of the Pt/various TiO2 catalysts.
Figure 3. The effect of physical properties on CO conversion over 1% Pt/TiO2-X. (a) active particle diameter (b) metal dispersion (c) surface area.
Figure 4. CO-TPD profiles of 1% Pt/TiO2-X catalysts.
Figure 5. The effect of O2-consumption on CO conversion over 1% Pt/TiO2-X.
Table 1. Physical Characteristics of Pt/TiO2 Catalysts
References
- M. Haruta, N. Yamada, T. Kobayashi, and S. lijima, Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide, J. Catal., 115, 301-309 (1989). https://doi.org/10.1016/0021-9517(89)90034-1
-
C. K. Costello, M. C. Kung, H.-S. Oh, Y. Wang, and H. W. Kung, Nature of the active site for CO oxidation on highly active
$Au/{\gamma}-Al_2O_3$ , Appl. Catal. A, 232, 159-168 (2002). https://doi.org/10.1016/S0926-860X(02)00092-3 -
C. K. Costello, J. H. Yang, H. Y. Law, Y. Wang, J.-N. Lin, L. D. Marks, M. C. Kung, and H. H. Kung, On the potential role of hydroxyl groups in CO oxidation over Au/
$Al_2O_3$ , Appl. Catal. A, 243, 15-24 (2003). https://doi.org/10.1016/S0926-860X(02)00533-1 - H.-S. Oh, J. H. Yang, C. K. Costello, Y. M. Wang, S. R. Bare, H. H. Kung, and M. C. Kung, Selective catalytic oxidation of CO: Effect of chloride on supported Au catalysts, J. Catal., 210, 375-386 (2002). https://doi.org/10.1006/jcat.2002.3710
-
C. K. Costello, J. Guzman, J. H. Yang, Y. M. Wang, M. C. Kung, B. C. Gates, and H. H. Kung, Activation of Au/c-
$Al_2O_3$ catalysts for CO oxidation: Characterization by X-ray absorption near edge structure and temperature programmed reduction, J. Phys. Chem. B, 108, 12529-12536 (2004). https://doi.org/10.1021/jp048643e -
J. H. Yang, J. D. Henao, M. C. Raphulu, Y. Wang, T. Caputo, A. J. Groszek, M. C. Kung, M. S. Scurrell, J. T. Miller, and H. H. Kung, Activation of Au/
$TiO_2$ catalyst for CO oxidation, J. Phys. Chem. B, 109, 10319-10326 (2005). https://doi.org/10.1021/jp050818c -
J. D. Henao, T. Caputo, J. H. Yang, M. C. Kung, and H. H. Kung, In situ Transient FTIR and XANES studies of the evolution of surface species in CO oxidation on Au/
$TiO_2$ , J. Phys. Chem. B, 110, 8689-8700 (2006). https://doi.org/10.1021/jp0568733 -
S. M. Oxford, J. D. Henao, J. H. Yang, M. C. Kung, and H. H. Kung, Understanding the effect of halide poisoning in CO oxidation over Au/
$TiO_2$ , Appl. Catal. A, 339, 180-186 (2008). https://doi.org/10.1016/j.apcata.2008.01.025 -
Y. Shen, G. Lu, Y. Guo, Y. Wang, Y. Guo, and X. Gong, Study on the catalytic reaction mechanism of low temperature oxidation of CO over Pd-Cu-Clx/
$Al_2O_3$ catalyst, Catal. Today, 175, 558-567 (2011). https://doi.org/10.1016/j.cattod.2011.03.042 - S. Li, G. Liu, H. Lian, M. Jia, G. Zhao, D. Jiang, and W. Zhang, Low-temperature CO oxidation over supported Pt catalysts prepared by colloid-deposition method, Catal. Commun., 9, 1045-1049 (2008). https://doi.org/10.1016/j.catcom.2007.10.016
-
G. J. Kim, D. W. Kwon, and S. C. Hong, Effect of Pt particle size and valence state on the performance of Pt/
$TiO_2$ catlaysts for CO oxidation at room temeprature, J. Phys. Chem. C, 120, 17996-18004 (2016). https://doi.org/10.1021/acs.jpcc.6b02945 - S. P. Cho, A study on the SCR reaction at low temperature and the characteristics of V/titania NOx removal catalyst, PhD Dissertation, Korea University, Korea (2010).
-
S. S. Kim, K. H. Park, and S. C. Hong, A study on HCHO oxidation characteristics at room temperature using a Pt/
$TiO_2$ catalyst, Appl. Catal. A, 398, 96-103 (2011). https://doi.org/10.1016/j.apcata.2011.03.018 - B. A. De Angelis, Metal-support and metal-additive effects in catalysis, J. Mol. Catal., 19, 289 (1983). https://doi.org/10.1016/0304-5102(83)80107-2
- N. Kamiuchi, M. Haneda, and M. Ozawa, CO oxidation over Pt/Ce-Zr oxide catalysts with low content of platinum and cerium components, Catal. Today, 201, 79-84 (2013). https://doi.org/10.1016/j.cattod.2012.04.039
-
A. Boubnov, S. Dahl, E. Johnson, A. P. Molina, S. V. Simonsen, F. M. Cano, S. Helveg, L. J. Lemus-Yegres, and J. Grunwaldt, Structure-activity relationships of Pt/
$Al_2O_3$ catalysts for CO and NO oxidation at diesel exhaust conditions, Appl. Catal. B, 126, 315-325 (2012). https://doi.org/10.1016/j.apcatb.2012.07.029 -
N, Yamaguchi, N. Kamiuchi, H. Muroyama, T. Matsui, and K. Eguchi, Effect of reduction treatment on CO oxidation over Pt/
$SnO_2$ catalyst, Catal. Today, 164, 169-175 (2011). https://doi.org/10.1016/j.cattod.2010.12.036 -
P. W. Seo, The Mechanism and characteristics of formaldehyde oxidation reaction over Pt/
$TiO_2$ catalysts at room temperature, PhD Dissertation, Korea University, Korea (2010).
Cited by
- Pt/TiO2의 HS 산화반응 및 SO2 피독과 재생 방안 연구 vol.30, pp.6, 2019, https://doi.org/10.14478/ace.2019.1093