3
(a) K. P. de Jong and J. W. Geus, Catal. Rev. Sci. Eng., 2000, 42, 481;
nanofibers is beneficial to avoid mass transfer limitations. These
effects are consistent with recent results reported by Pham-Huu
(b) P. Serp, M. Corrias and P. Kalck, Appl. Catal., A, 2003, 253, 337; (c)
G. Mestl, N. I. Maksimova, N. Keller, V. V. Roddatis and R. Schl o¨ gl,
Angew. Chem., Int. Ed., 2002, 40, 2066.
4b
et al. for the hydrogenation of cinnamaldehyde.
In conclusion, the two-step MOCVD can be efficiently used to
synthesize highly dispersed Pd nanoparticles supported on carbon
nanofibers under mild conditions. The functionalization of the
carbon nanofibers is a necessary step to provide anchoring sites.
The catalysts show high activity and stability in the hydrogenation
of cyclooctene, presumably due to special metal–support interac-
tions and the absence of micropores. Thus, the MOCVD route is
of great potential in the controlled synthesis of carbon fiber-
supported catalysts.
4 (a) J. M. Planeix, N. Coustel, B. Coq, V. Brotons, P. S. Kumbhar,
R. Dutartre, P. Geneste, P. Bernier and P. M. Aiayan, J. Am.
Chem. Soc., 1994, 116, 7935; (b) C. Pham-Huu, N. Keller, M. J.
Ledoux, L. Charbonni e` re and R. Ziessel, Chem. Commun., 2000, 19,
1871; (c) C. Park and R. T. K. Baker, J. Phys. Chem. B, 1998, 102,
5
2
168; (d) C. H. Liang, Z. L. Li, J. S. Qiu and C. Li, J. Catal., 2001, 211,
78.
(a) R. Gao, C. D. Tan and R. T. K. Baker, Catal. Today, 1999, 65, 385;
b) R. Giordano, P. Serp, P. Kalck, Y. Kihn, J. Schreiber, C. Marhic
5
6
(
and J. L. Duvail, Eur. J. Inorg. Chem., 2003, 610.
(a) C. A. Bessel, K. Laubernds, N. M. Rodriguez and R. T. K. Baker,
J. Phys. Chem. B, 2001, 105, 1115; (b) E. S. Steigerwalt, G. A. Deluga,
D. E. Cliffel and C. M. Lukehart, J. Phys. Chem. B, 2001, 105,
8097; (c) W. Z. Li, C. H. Liang, J. S. Qiu, W. J. Zhou, H. M. Han,
Z. B. Wei, G. Q. Sun and Q. Xin, Carbon, 2002, 40, 787.
P. Serp and P. Kalck, Chem. Rev., 2002, 102, 3085.
We acknowledge financial support from the Deutsche
Forschungsgemeinschaft. C. H. Liang thanks the Alexander von
Humboldt Stiftung for financial support.
7
a
a
Changhai Liang, Wei Xia, Hamideh Soltani-Ahmadi, Oliver Schl u¨ ter,
a
a
8 C. P. Mehnert, D. W. Weaver and J. Y. Ying, J. Am. Chem. Soc., 1998,
120, 12289.
b
Roland A. Fischer and Martin Muhler*
Laboratory of Industrial Chemistry, Ruhr-University Bochum,
D-44780, Bochum, Germany.
E-mail: muhler@techem.ruhr-uni-bochum.de; Fax: +49-234-32-14115;
Tel: +49-234-32-28754
Laboratory of Inorganic Chemistry II, Ruhr-University Bochum,
a
a
9 X. Mu, U. Bartmann, M. Guraya, G. W. Busser, U. Weckenmann,
R. Fischer and M. Muhler, Appl. Catal., A, 2003, 248, 85.
0 (a) P. Serp, R. Feurer, Y. Kihn, P. Kalck, J. L. Faria and
J. L. Figueiredo, J. Phys. IV, 2002, 12, 29; (b) P. Serp, R. Feurer,
Y. Kihn, P. Kalck, J. L. Faria and J. L. Figueiredo, J. Mater. Chem.,
1
b
2001, 11, 1980.
D-44780, Bochum, Germany
1
1 (a) T. Sainsbury and D. Fitzmaurice, Chem. Mater., 2004, 16, 2174; (b)
T. G. Ros, A. J. van Dillen, J. W. Geus and D. C. Koningsberger,
Chem. Eur. J., 2002, 8, 1151.
Notes and references
1
2 (a) S. D. Jackson, G. J. Kelly, S. R. Watson and R. Gulickx, Appl.
Catal., A, 1999, 187, 161; (b) L. B. Okhlopkova, A. S. Lisitsyn,
V. A. Likholobov, M. Gurrath and H. P. Boehm, Appl. Catal., A,
2003, 204, 229.
1
2
S. Iijima, Nature, 1991, 354, 56.
(a) R. H. Baughman, A. A. Zakhidov and W. A. de Heer, Science, 2002,
97, 787; (b) H. J. Dai, Acc. Chem. Res., 2002, 35, 1035.
2
2
84 | Chem. Commun., 2005, 282–284
This journal is ß The Royal Society of Chemistry 2005