Реакция #3152

Уравнение реакции

titanium dioxide

titanium dioxide

phosphorus pentoxide

titanium dioxide

phosphoric acid

phosphorus pentoxide

→

titanium pyrophosphate

Условия реакции

Обработка

1. 1
   workup.ADDITIONThe reactants are thoroughly mixed
2. 2
   Температураheated at temperatures of about 400° C. to about 500° C.

Методика

The method of the present invention generally involves the mixture of titanium dioxide and hot concentrated phosphoric acid in a reaction vessel. The reaction mixture has a phosphorus pentoxide to titanium dioxide mole ratio greater than one. Preferably, the phosphorus pentoxide to titanium dioxide mole ratio is about 1.06 or more, and most preferably about 1.20 to about 1.25. The reactants are thoroughly mixed and heated at temperatures of about 400° C. to about 500° C. to produce a fine titanium pyrophosphate powder having a significantly higher fines yield over conventional titanium pyrophosphate processes. The fines yield is greater than 90% when using a phosphorus pentoxide to titanium dioxide mole ratio of about 1.20 to about 1.25.

Источник