Shape-Controlled Synthesis and Catalytic Behavior of Supported Platinum Nanoparticles

Abstract

A 5 wt% Pt/C catalyst with around 20 nm cubic platinum particles was prepared through a conventional preparation method (i.e., precursor impregnation, reduction, and calcination) by choosing to use hydrophobic solvent in the impregnation procedure. The precise nanoparticles shape control can be achieved by using this preparation method as compared to the commonly used precolloid method. These 20 nm cubic Pt particles showed high selectivity (ca. 99.4%) for the hydrogenation of o-chloronitrobenzene.

Key words

platinum nanoparticles - shape control - supported catalyst - hydrogenation - chloronitrobenzene

References

• 1 Gates BC. Chem. Rev.  1995,  95:  511 
• 2 Balint I. Miyazaki A. Aika K.-i. Chem. Commun.  2002,  1044 
• 3 Rickard JM. Genovese L. Moata A. Nitsche S. J. Catal.  1990,  121:  141 
• 4 Miyazaki A. Balint I. Aika K.-i. J. Catal.  2001,  204:  364 
• 5 Puntes VF. Krishnan KM. Alivisatos AP. Science  2001,  291:  2115 
• 6 Ahmadi TS. Wang ZL. Green TC. Henglein A.
  El-Sayed MA. Science  1996,  272:  1924 
• 7 Sun YG. Xia YN. Science  2002,  298:  2176 
• 8 Teranishi T. Kurita R. Miyake M. J. Inorg. Organomet. Polym.  2000,  10:  145 
• 9 Miyazaki A. Nakano Y. Langmuir  2000,  16:  7109 
• 10 Yoo JW. Hathcock D. El-Sayed MA. J. Phys. Chem. A  2002,  106:  2049 
• 11 Song H. Kim F. Connor S. Somorjai GA. Yang P.
  J. Phys. Chem. B  2005,  109:  188 
• 12 Jacobs G. Ghadiali F. Pisanu A. Borgan A. Alvarez WE. Resasco DE. Appl. Catal., A  1999,  188:  79 
• 13 Han XX. Zhou RX. Zheng XM. Jiang H. J. Mol. Catal. A: Chem.  2003,  193:  103 
• 14 Coq B. Tijani A. Dutartre R. Figuéras F. J. Mol. Catal.  1993,  79:  253 
• 15 Menini C. Park C. Shin E. Tavoularis G. Keane MA. Catal. Today  2000,  62:  355 
• 16 Chon S. Allen D. AIChE J.  1991,  37:  1730 
• 17 Zhang JL. Wang Y. Ji H. Wei YG. Zhang J. Wang Y. Ji H. Wei Y. Wu N. Zuo B. Wang Q. J. Catal.  2005,  229:  114