Additives Effect Pyrochlore Type Tungsten Oxide Powders

When using a weak acid-type organic and neutral organics as additives, various additives may also occur their redox reaction in the hydrothermal system. However, since the reactor does not provide an oxidizing agent, organic additives is difficult to oxidation-reduction reaction by itself ultimately generate cO32 one. Experiments show that, to each group after the reaction was added dropwise a solution of calcium chloride solution, no white precipitate formed, the solution described does not generate co wide.

Organic amendments after the hydrothermal reaction in the complete conversion of cO32 a is the ideal result, so that, by means causticizing reaction to convert solution NaZCO3 into NaOH, so as to realize recycling NaoH, traditional oxide tungsten production of raw materials is difficult cycle, high productivity, and poor environmental benefits expected to be resolved many key issues, has obvious practical significance.

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