Synthesis of monodisperse Ta2O5 powder
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Narrow-sized, unagglomerated and spherical Ta2O5 powder was prepared by the controlled hydrolysis of tantalum pentaethoxide, Ta(OC2H5)5, in ethanol with a dispersant (hydroxypropyl cellulose) present. X-ray diffraction results showed that the as-prepared powder was amorphous and became crystalline after firing at 800° C in air for 2h. The particle size and the degree of agglomeration decrease with increasing hydroxypropyl cellulose concentration.
KeywordsEthoxide Induction Time Dispersion Polymerization Typical Scanning Electron Microscope Hydroxypropyl Cellulose
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- 3.J. H. JEAN and T. A. RING, Bull. Amer. Ceram. Soc. 65 (1986) 1574.Google Scholar
- 12.S. C. DANFORTH and J. HAGGERTY, J. Amer. Ceram. Soc. 66 (1983) C–58.Google Scholar
- 16.ANN BEGLEY-HARDY, private communication.Google Scholar
- 19.K. E. J. BARRETT, “Dispersion Polymerization in Organic Media” (Wiley, London, 1975) 115–220.Google Scholar
- 20.CRC Handbook of Chemistry and Physics, 66th Edition edited by R. C. Weast (CRC Press, Boca Raton, Florida, 1986) 18–149.Google Scholar