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Synthesis of Pt/Al2O3 Catalysts by Microemulsion Technique and Hydrogenation of p-Chloronitrobenzene
Corresponding Author(s) : Hua Song
Asian Journal of Chemistry,
Vol. 27 No. 6 (2015): Vol 27 Issue 6
Abstract
A water-in-oil microemulsion method for preparing Pt nanoparticles supproted on Al2O3 catalysts based on cetyltrimethylammonium bromide/n-butanol/cyclohexane/H2PtCl6 solution were described. The effects of the microemulsion composition and reduction condition on hydrogenation properties over Pt/Al2O3 catalysts were investigated using the hydrogenation of p-chloronitrobenzene as model reactions. Compared with the impregnation-derived catalyst, the microemulsion-derived catalyst showed smaller (about 3 nm) and highly dispersed Pt nanoparticles with much higher p-chloronitrobenzene hydrogenation conversion of 76.8 %, which improved by 46.7 %. The result could be attributed to the small Pt nanoparticles with high dispersion on Al2O3 prepared by microemulsion method.
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References
G. Konnecker, A. Boehncke and S. Schmidt, Fresenius Environ. Bull., 12, 589 (2003).
Y.B. Fang, X.H. Yan, J.Q. Sun, Z.Y. Xu and W.J. Wang, Chin. J. Catal., 26, 233 (2005).
Y.Y. Chen, C.A. Wang, H.Y. Liu, J.S. Qiu and X.H. Bao, Chem. Commun., 42, 5298 (2005); doi:10.1039/b509595f.
X. Yan, J. Sun, Y. Wang and J. Yang, J. Mol. Catal. Chem., 252, 17 (2006); doi:10.1016/j.molcata.2006.01.060.
X.X. Han, R.X. Zhou, G.H. Lai and X.M. Zheng, Catal. Today, 93-95, 433 (2004); doi:10.1016/j.cattod.2004.06.053.
L. Červený, I. Paseka, V. Stuchlý and V. Růžička, Collect. Czech. Chem. Commun., 47, 853 (1982); doi:10.1135/cccc19820853.
Z.K. Yu, S.J. Liao, Y. Xu, B. Yang and D.R. Yu, J. Mol. Catal. Chem., 120, 247 (1997); doi:10.1016/S1381-1169(96)00420-7.
X.X. Han, R.X. Zhou, X.M. Zheng and H. Jiang, J. Mol. Catal. Chem., 193, 103 (2003); doi:10.1016/S1381-1169(02)00178-4.
J. Wrzyszcz, M. Zawadzki, A.M. Trzeciak and J.J. Ziolkowski, J. Mol. Catal. Chem., 189, 203 (2002); doi:10.1016/S1381-1169(02)00073-0.
J.L. Zhang, Y. Wang, H. Ji, Y.G. Wei, N.Z. Wu, B.J. Zuo and Q.L. Wang, J. Catal., 229, 114 (2005); doi:10.1016/j.jcat.2004.09.029.
V. Kratky, M. Kralik, M. Mecarova, M. Stolcova, L. Zalibera and M. Hronec, Appl. Catal. A, 235, 225 (2002); doi:10.1016/S0926-860X(02)00274-0.
M. Boutonnet, S. Lögdberg and E. Elm Svensson, Curr. Opin. Colloid Interface Sci., 13, 270 (2008); doi:10.1016/j.cocis.2007.10.001.
S. Eriksson, Appl. Catal. A, 265, 207 (2004); doi:10.1016/j.apcata.2004.01.014.
J.H. Shen and Y.W. Chen, J. Mol. Catal. Chem., 273, 265 (2007); doi:10.1016/j.molcata.2007.04.015.
H.X. Li, Y.D. Wu, J. Zhang, W.L. Dai and M.H. Qiao, Appl. Catal. A, 275, 199 (2004); doi:10.1016/j.apcata.2004.07.034.
I. Lisiecki and M.P. Pileni, J. Am. Chem. Soc., 115, 3887 (1993); doi:10.1021/ja00063a006.
T.S. Ahmadi, Z.L. Wang, T.C. Green, A. Henglein and M.A. El-Sayed, Science, 272, 1924 (1996); doi:10.1126/science.272.5270.1924.