Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-20T04:39:24.172Z Has data issue: false hasContentIssue false
  • English
  • Français

Analysis of doped rodlike surface fibers in Al–Al3Ni eutectic alloys

Published online by Cambridge University Press:  03 March 2011

E. Rosell-Laclau ,
M. Durand-Charre  and
J-C. Joud
E. Rosell-Laclau
Affiliation:
INP Grenoble, L.T.P.C.M. (CNRS, URA29). Domaine Universitaire BP75, 38402 Saint-Martin-D' Hères Cédex. France
M. Durand-Charre
Affiliation:
INP Grenoble, L.T.P.C.M. (CNRS, URA29). Domaine Universitaire BP75, 38402 Saint-Martin-D' Hères Cédex. France
J-C. Joud
Affiliation:
INP Grenoble, L.T.P.C.M. (CNRS, URA29). Domaine Universitaire BP75, 38402 Saint-Martin-D' Hères Cédex. France
Get access

Abstract

Undoped and Cr doped rodlike Al-Al3Ni eutectics have been studied as initial alloys of Raney nickel catalysts. The aim was to localize the dopant at different stages of the catalyst life: in the initial alloy, after Al leaching out, and after hydrogenation reaction. We have followed this dopant by STEM analysis and high resolution Auger spectroscopy. The outcome is that during Al leaching out, the dopant is also extracted from its initial phase and then forms a deposit on the Ni crystallites of the catalyst. Moreover, during the hydrogenation, the quantity of Cr remains roughly constant.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 5 , May 1995 , pp. 1154 - 1158
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Hansen, M. and Anderko, K., in Constitution of Binary Alloys, 2nd ed. (McGraw-Hill, New York, 1958).CrossRefGoogle Scholar
2Singleton, M. F., Murray, J. L., and Nash, P., in Binary Alloy Phase Diagrams, edited by Massalski, T. B. (W. W. Scott, 1990), p. 181.Google Scholar
3Freel, J., Pieters, W. J. M., and Anderson, R. B., J. Catal. 14, 247 (1968).CrossRefGoogle Scholar
4Oden, L. L. and Russel, J. H., U. S. Bureau of Mines 8272 (1978).Google Scholar
5Sassoulas, R. and Trambouze, Y., Bull. Soc. Chim. France 5, 985 (1964).Google Scholar
6Fouilloux, P., Appl. Catal. 8, 1 (1983).CrossRefGoogle Scholar
7Sane, S., Bonnier, J. M., Damon, J. P., and Masson, J., Appl. Catal. 9, 69 (1984).CrossRefGoogle Scholar
8Kordulis, C., Doumain, B., Damon, J. P., Masson, J., Dalons, J. L., and Delannay, F., Bull. Soc. Chim. Belg. 94(6), 371 (1985).CrossRefGoogle Scholar
9Besson, M., Djaouadi, D., Bonnier, J. M., Hamar-Thibault, S., and Joucla, M., Stud. Surf. Sci. Catal. 59, 113 (1991).CrossRefGoogle Scholar
10Colin, P., Thése, INP Grenoble, France (1990).Google Scholar
11Bonnier, J. M., Damon, J. P., Delmon, B., Doumain, B., and Masson, J., J. Chim. Phys. 84 (7–8), 889 (1987).CrossRefGoogle Scholar
12Bonnier, J. M., Damon, J. P., and Masson, J., Appl. Catal. 42, 285 (1988).CrossRefGoogle Scholar
13Lemkey, F. D. and Golden, G. S., US Patent 4,069,71 (1978).Google Scholar
14Brooks, C. S., Lemkey, F. D., and Golden, G. S., Proc. 3rd Conf. on In Situ Composites, Boston, edited by Bibring, H., Walter, J. L., and Olivier, B.F. (1978), p. 221.Google Scholar
15Lemkey, F. D., Herzberg, R. W., and Ford, J. A., Trans. Metall. Soc. AIME 233, 334 (1965).Google Scholar
16Garmong, G., Metall. Trans. 6A, 1335 (1975).CrossRefGoogle Scholar
17Jaffrey, D. and Chadwick, G. A., Metall. Trans. 1, 3389 (1970).CrossRefGoogle Scholar
18Murray, J. L., in Binary Alloy Phase Diagrams, edited by Massalski, T.B. (W.W. Scott, 1990), p. 138.Google Scholar
19Rhône-Poulenc/CNRS, U.M., personal communication (1992).Google Scholar
20Cliff, G. and Lorimer, G. W., Proc. 5th European Congress on Electron Microscopy, Manchester, U.K. (Institute of Physics, London, 1972), p. 140.Google Scholar
21Thompson, M. N., Doig, P., Edington, J. W., and Flewitt, P. E. J., Philos. Mag. 35(6), 1537 (1977).CrossRefGoogle Scholar
22Steffen, J. and Hofmann, S., Surf. Interf. Anal. 11, 617 (1988).CrossRefGoogle Scholar
23Brooks, C. S., Lemkey, F. D., and Golden, G. S., Surf. Technol. 16, 67 (1982).CrossRefGoogle Scholar
24Brooks, C. S., Stud. Surf. Sci. Catal. 31, 375 (1987).CrossRefGoogle Scholar