FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing canaphite, i.e. a hydrated disodium pyrophosphate of calcium (Na2CaP2O7*4H2O). The method involves feeding starting components: water, a crystalline hydrate of sodium pyrophosphate, calcium acetate or a crystalline hydrate of calcium nitrate, in molar ratio of the crystalline hydrate of sodium pyrophosphate to calcium acetate or crystalline hydrate of calcium nitrate of 0.98-1.02 and ratio of the mass of water to mass of the produced canaphite of 0.7-0.8. Said components then react while mixing intensely in a planetary mill at a rate of 5000-7000 rpm for 1-3 hours. The obtained product is then washed with water 4-6 times and disaggregated.
EFFECT: method enables to obtain single-phase canaphite powder with particle size in the range of 100-500 nm with high output of the end product.
1 tbl, 2 ex
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Authors
Dates
2013-11-27—Published
2012-05-30—Filed