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Surface Chemistry Of Heterobimetallic Ge-M (M = Mo, W) Complexes In Zeolite Y

Published online by Cambridge University Press:  15 February 2011

Aticha Borvornwattananont ,
Karin Moller  and
Thomas Bein
Aticha Borvornwattananont
Affiliation:
Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA
Karin Moller
Affiliation:
Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA
Thomas Bein
Affiliation:
Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA
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Abstract

The intrazeolite chemistry of the two germylene complexes Cl2(THF)GeM(CO)5(M = Mo, W) was studied with x-ray absorption spectroscopy (Ge, Mo, W edge EXAFS) and in-situ FTIR/TPD-MS techniques. The slightly decarbonylated GeMo complex interacts with the framework of NaY zeolite at room temperature and retains the Ge-Mo bond up to about 100° C. In proton-loaded HY zeolite, framework interactions increase at elevated temperature, and the attached complex retains the Ge-Mo bond up to about 120° C. The Ge-Mo bond is cleaved at higher temperatures. MoC1x and Mo-Mo species are formed in NaY and HY zeolite, respectively, while GeClx fragments are anchored to the zeolite framework.

The complex Cl2 (THF)GeW(CO) 5 retains all five CO ligands up to about 100° C in both NaY and the proton form. Detectable anchoring occurs at room temperature in NaY and at about 80° C in the proton form. WC1x species are formed upon cleavage of the Ge-W bond at higher temperatures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 233: Symposium U – Synthesis/Characterization and Novel Applications of Molecular Sieve Materials , 1991 , 195
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

1 Jacobs, P. A., ”Carboniogenic Activity of Zeolites”, Elsevier, Amsterdam, (1977).Google Scholar
2 Borvornwattananont, A., Moller, K. and Bein, T., J. Chem. Soc., Chem. Commun. (1990), 28.CrossRefGoogle Scholar
3 Behrens, H., Moll, M. and Sixtus, E., Z. Naturforsch. 32b,1105, (1977).CrossRefGoogle Scholar
4 Lee, P. A., Citrin, P. H., Eisenberger, P. and Kincaid, B. M., Rev. Mod. Phys., 53,769, (1981).CrossRefGoogle Scholar
5 Bein, T., McLain, S. J., Corbin, D. R., Farley, R. F., Moller, K., Stucky, G. D., Wolery, G. and Sayers, D., J. Am. Chem. Soc. 110, 1801, (1988).CrossRefGoogle Scholar
6 Moller, K, Borvornwattananont, A. and Bein, T., J. Phys. Chem. 93, 4562, (1989); A. Borvorawattananont, K Moller and T. Bein, J. Phys. Chem. 93., 4205, (1989).CrossRefGoogle Scholar
7 Cotton, A. F., ”Advanced Inorganic Chemistry”, John Wiley & Sons, New York (1988).Google Scholar