LOW TEMPERATURE PROCESS FOR PRODUCING NANO-SIZED TITANIUM DIOXIDE PARTICLES

摘要

A process for synthesizing nano-sized rutile, anatase, or a mixture of rutile and anatase TiO<SUB>2</SUB> powder. The process includes the steps of: 1 ) forming a Ti-peroxo complex by mixing H<SUB>2</SUB>O<SUB>2</SUB> with a Ti compound, and 2) heating the Ti-peroxo complex at a temperature of above 50°C. A primary particle size of TiO<SUB>2</SUB> particles, synthesized by the method, is below 50nm, and an agglomerated particle size thereof after a washing/dry process is below about 10 µm. The major characteristics of the present invention are that it is a low temperature process, a highly concentrated synthesis, and high production yield of above 90%.