Making Nanosized Oxide Powders from Precursors by Flame Spray Pyrolysis

Richard Laine

R.M. Laine, R. Baranwal, T. Hinklin, D. Treadwell, A. Sutorik, C.R. Bickmore, K. Waldner, and S.S. Neo (1998)

Novel Synthetic and Processing Routes to Ceramics, Uematsu, H. Otsuka, Eds., Key Engineering Materials, 159-160:17-24.

Mixed-me: al alkoxide precursors to a wide variety of aluminosilicate precursors can be
synthesized directly) y reaction of silica and/or aluminum hydroxide, and group I or II metal
hydroxides or oxides. The resulting alkoxide precursors are ethanol soluble and can be
aerosolized for combustion. The combustion process provides access to dense single
particle powders that range from 2-200 nm in s ze, are normally unagglomerated, and often
single crystals. These powders can be processed to dense monoliths with minimum effort. Examples of nanopowders formed include spinel, millute and strontium aluminosilicate.

Nanopowder, flame spray pyrolysis