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研究了 2 Mg O· 2 B2 O3 · Mg Cl2 · 1 4 H2 O在不同温度下的 7.8% H3 BO3 水溶液中的相转化产物及其溶解度 . IR,XRD,TG及化学分析表明 ,相转化产物在 0~ 2 2℃范围内为 Mg O· 2 B2 O3 · 9H2 O;2 2~ 6 8℃为Mg O· 3B2 O3 · 7.5 H2 O;6 8~ 95℃为 Mg O· 3B2 O3 · 7H2 O;95~ 98.8℃为 Mg O· 3B2 O3 · 5 H2 O;1 0 0~ 1 1 0℃为 Mg O· B2 O3 · 3H2 O;1 1 0~ 1 2 0℃为 2 Mg O· B2 O3 · 2 H2 O;1 2 0~ 1 70℃为 2 Mg O· B2 O3 · 1 .5 H2 O;1 70~ 2 0 0℃为 2 Mg O·B2 O3 ·H2 O.提出了相转化反应原理 .
The phase transformation products of 2 Mg O · 2 B2 O3 · MgCl 2 · 1 4 H 2 O in 7.8% H3BO3 aqueous solution at different temperatures and their solubility were studied. IR, XRD, TG and chemical analysis showed that the phase conversion products MgO · 2 B2 O3 · 9H2O from 0 to 22 ° C, MgO · 3B2 O3 · 7.5 H2 O from 2 to 6 ° C, MgO · 3B2 O3 · 7H2O from 68 to 95 ° C, 95 to 98.8 ° C is Mg O · 3B 2 O 3 · 5 H 2 O; 100 to 110 ° C is Mg O · B 2 O 3 · 3H 2 O; and 110 to 120 ° C is 2 Mg O · B 2 O 3 · 2 H2 O; 1 2 0 ~ 1 70 ℃ 2 Mg O · B2 O3 · 1 .5 H2 O; 1 70 ~ 2 0 0 ℃ 2 Mg O · B2 O3 · H2 O. Proposed the principle of phase inversion reaction.