Abstract
Highly dispersive silica-impregnated platinum catalysts were prepared by incorporating titania to the surface of silica support and by treating the impregnated platinum precursor with hydrogen peroxide. High dispersion of platinum on the titania-incorporated silica support was confirmed by XRD, TEM, EXAFS, and X-ray photoelectron spectroscopy (XPS) techniques. The platinum particles dispersed on silica ranged from 1 to 2 nm in size, although the loading amount of platinum was as high as 4 wt.%. The strong interaction between platinum and titania suppressed the migration and aggregation of the platinum particles on the surface, retaining a high dispersion of platinum. The platinum catalysts impregnated on the titania-incorporated silica showed higher catalytic activities in the combustion of methane than the platinum catalysts impregnated on the silica, while their catalytic activities were poor in the hydrogenation of nitrobenzene. Platinum dispersions and catalytic activities of the platinum catalysts on the silica support were discussed in relation to the strong interaction between platinum and titania.
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References
Rase HF (2000) Handbook of commercial catalysts-heterogeneous catalysts. CRC Press, Boca Raton, p 105
Dou D, Liu D-J, Williamson WB, Kharas KC, Robota HJ (2001) Appl Catal B 30:11
Papaefthimiou P, Ioannides T, Verykios XE (1998) Appl Catal B 15:75
Zhou Z, Zhou W, Wang S, Wang G, Jiang L, Li H, Sun G, Xin Q (2004) Catal Today 93–95:523
Singh UK, Vannice MA (2001) Appl Catal A 213:1
Krishnankutty N, Vannice MA (1995) J Catal 155:312
Socolova NP (2004) Colloids Surf A 239:125
Wei-Xing X, Schierbaum KD, Goepel W (1995) J Solid State Chem 119:237
Chun H, Yizhong W, Hongxiao T (2001) Appl Catal B 30:277
You YS, Chung K-H, Kim J-H, Seo G (2001) Korean J Chem Eng 18:924
Kim TJ, Kim J-H, Seo G (2001) React Kinet Catal Lett 73:275
Ryoo M-W, Chung S-G, Kim J-H, Song YS, Seo G (2003) Catal Today 83:131
Yang JC, Kim YC, Shul YG, Shin CH, Lee TK (1997) Appl Surf Sci 121/122:525
Goguet A, Aouine M, Cadete Santos Aires FJ, De Mallmann A, Schweich D, Candy JP (2002) J Catal 209:135
de Craaf J, van Dillen AJ, de Jong KP, Koningsberger DC (2001) J Catal 203:307
Esquivias L, Del Solar MR (1997) J Noncrystal Solids 220:45
Silvestre-Albero J, Sepúlveda-Escribano A, Rodríguez-Reinoso F, Anderson JA (2004) J Catal 223:179
Gracia FJ, Bollmann L, Wolf EE, Miller JT, Kropf AJ (2003) J Catal 220:382
Foger K (1984) In: Anderson JR, Boudart M (eds) Catalysis science and technology, vol 6. Springer-Verlag, Berlin, Chap. 4
Ahn WS, Lee DH, Kim TJ, Kim J-H, Seo G, Ryoo R (1999) Appl Catal A 181:39
Kim TJ, Heo NH, Kim J-H, Seo G (2003) React Kinet Catal Lett 79:287
Poondi D, Vannice MA (1997) J Mol Catal A 124:79
Acknowledgment
This research is supported by the Ministry of Commerce, Industry and Energy as part of the study on “Catalytic Converters for EURO-IV/V Regulation”.
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Kim, MY., You, Y.S., Han, HS. et al. Preparation of Highly Dispersive Platinum Catalysts Impregnated on Titania-Incorporated Silica Support. Catal Lett 120, 40–47 (2008). https://doi.org/10.1007/s10562-007-9246-y
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DOI: https://doi.org/10.1007/s10562-007-9246-y