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首页> 外文会议>Proceedings of the First International Conference on Application and Commercialization of Sol-Gel Processing, Saarbruecken, Germany >Preparation of lithium choloroboracite from alkoxides
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Preparation of lithium choloroboracite from alkoxides

机译：用醇盐制备氯硼酸锂

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摘要

Lithium chloroboracite (Li_4B_7O_(12)Cl), known as a lithium-ion conductor, was prepared from lithium methoxide and boron methoxide with hydrochloric acid or ammonium chloride as a chlorine source. The effects of the amount of chlorine source and heating temperature on pyhases in products were investigated. Pure Li_4B_7O_(12)Cl was obtained at the heating temperature of 923 to 973 K and at the Cl/Li ratio in the sol solution (Rc) of 0.675 with the addition of hydrochloric acid or at Rc of 0.675 to 0.825 with the addition of ammonium chloride. A smaller Rc than the above values resulted in the formation of lithium tetraborate due to a lack of chlorine, caused by the evaporation of chlorine during heating. On the other hand, a larger Rc led to lithium metaborate formation, becasue of the evaporation of boron during drying. Heating above 1023 K resulted in a partial decomposition of Li_4B_7O_(12) Cl inthium borates.
机译：氯硼酸锂（Li_4B_7O_（12）Cl）被称为锂离子导体，是由甲醇锂和甲醇硼以盐酸或氯化铵为氯源制备的。研究了氯源的数量和加热温度对产品中磷酸酶的影响。在923至973 K的加热温度下，在溶胶溶液（Rc）的Cl / Li比为0.675的条件下，加入盐酸，或者在Rc为0.675至0.825的条件下，获得纯Li_4B_7O_（12）Cl。氯化铵。小于上述值的Rc由于缺乏氯而形成四硼酸锂，这是由于加热期间氯的蒸发引起的。另一方面，较大的Rc导致偏硼酸锂的形成，这是由于干燥过程中硼的蒸发。加热到1023 K以上会导致Li_4B_7O_（12）Cl硼酸铟的部分分解。

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