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Nmr Spectroscopic Investigations of Pbtio3 Sol-Gel Processing*

  • S.D. Ramamurthi (a1) and D.A. Payne (a2)

Abstract

Lead titanate gels were prepared by sol-gel processing from lead acetate and titanium isopropoxide in methoxyethanol. In the present study, 1H, and 13C FTNMR spectroscopic and mass spectrometric techniques were used to identify the structures of lead and titanium precursors formed by refluxing lead acetate and titanium isopropoxide in methoxyethanol, respectively. Lead acetate was found to be partially alkoxylated, whereas, the titanium precursor was identified as a dimer with complete alkoxy group exchange. Similar procedures were applied to identify the lead titanium complex formed from lead and titanium precursors.

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This research was carried out at the University of Illinois at Urbana Champaign, IL.

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1a. Budd, K.D., Dey, S.K., Payne, D.A., Brit. Ceram. Proc., 36, 107 (1985).
1b. Blum, J.B., Gurkovich, S.R., J. Mat. Sci., 22, 2655 (1987).
1c. Budd, K.D., Dey, S.K., Payne, D.A., Mat. Res. Soc. Symp. Proc., 73, 711 (1986).
2. For recent studies see:
2a. Mat. Res. Soc. Symp. Proc., Edited by Brinker, C.J., Clark, D.E., Ulrich, D.H., 73 (1986);ibid, 121(1988).
2b. Ultrastructure and Processing of Advanced Ceramics, Edited by MacKenzie, J.D., Ulrich, D.R., (John Wiley & Sons, New York, 1988).
3. Budd, K.D., Ph.D. Thesis, University of Illinois at Urbana-Champaign, IL, (1986).
4. Li, S., Condrate, R.A., Spriggs, R.M., Spect. Lett., 21[9 & 10], 969 (1988).
5. Dekleva, T.W., Hayes, J.M., Cross, L.E., Geoffory, G., J. Am. Ceram. Soc., 71[5], c 280 (1988).
6. Ramamurthi, S.D. and Payne, D.A, accepted for publication in J. Am. Ceram. Soc., Feb. (1990).
7. Harrison, A.G., Chemical Ionization Mass Spectrometry, (CRC Press, Boca Raton, FL, 1983).
8. Ramamurthi, S.D., Ph.D. Thesis, University of Illinois at Urbana-Champaign, IL,(1990)
9a. Leaustic, A., Babonneau, F., Livage, J., Chem. Mater., 1, 240, (1989).
9b. Eichorst, D.J., Howard, K.E., Payne, D.A., Wilson, S.R., accepted for publication in Inorg. Chem, Feb. (1990).
10. Kezuka, K., Hayashi, Y., Yamaguchi, T., J. Am. Ceram. Soc., 72[9], 1660 (1989).

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Nmr Spectroscopic Investigations of Pbtio3 Sol-Gel Processing*

  • S.D. Ramamurthi (a1) and D.A. Payne (a2)

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