(浙江工業(yè)大學(xué) 化學(xué)工程與材料學(xué)院, 杭州 310014)
摘 要: 研究了含氟三氯化銻溶液中和水解產(chǎn)物的物相。 結(jié)果表明： 當(dāng)三氯化銻溶液中氟離子含量較低時(shí)， 中和水解初始沉淀產(chǎn)物物相為氯氧銻；當(dāng)氟離子含量高于3 mol/L時(shí)， 三價(jià)銻溶液中和水解初始沉淀產(chǎn)物為三氧化二銻； 當(dāng)三價(jià)銻溶液中和水解的pH=10時(shí)， 隨著氟離子含量的增加， 沉淀產(chǎn)物中斜方晶型三氧化二銻的含量隨之降低， 而立方晶型三氧化二銻的含量則逐漸增加；對一定含量氟離子的三氯化銻溶液， 隨著水解母液pH值的升高， 水解產(chǎn)物中不同晶型三氧化二銻含量也有相同的變化規(guī)律。
關(guān)鍵字: 含氟三氯化銻； 中和水解； 氧化銻； 立方晶型； 斜方晶型
（College of Chemical Engeering and Materials Science,
Zhejiang University of Technology, Hangzhou 310014, China）
Abstract: The phases of antimony trichloride solutions containing fluorine neutralized-hydrolysis product were studied. The results indicate that the original nertralization-hydrolysis precipitate is antimony oxychloride (Sb4O5Cl2) when the fluorine content in SbCl3 solution is low. When the fluorine content exceeds
3 mol/L, the precipitate is not Sb4O5Cl2, but antimony trioxide (Sb2O3). The orthorhombic Sb2O3 content in the precipitate decreases and the cubic Sb2O3 content increases gradually with the increase of fluorine content when the pH is 10. The similar phenomenon for the change of the phases has also been found with the increase of pH, and the fluorine content in SbCl3 solution keeps constant.
Key words: antimony trichloride containing fluorine; neutralization-hydrolysis; antimony trioxide; cubic crystal; orthorhombic crystal
