偏铝酸锂
偏铝酸锂是一种无机化合物,化学式为LiAlO2,是锂的铝酸盐之一。
偏铝酸锂 | |
---|---|
IUPAC名 Lithium aluminate | |
系统名 Lithium(1+) aluminate | |
别名 | 铝酸锂 |
识别 | |
CAS号 | 12003-67-7 |
PubChem | 123268 |
ChemSpider | 109880 |
SMILES |
|
InChI |
|
InChIKey | YQNQTEBHHUSESQ-YICCBGQXAE |
EINECS | 234-434-9 |
MeSH | Lithium+aluminate |
性质 | |
化学式 | AlLiO2 |
摩尔质量 | 65.92 g·mol−1 |
外观 | 白色晶体 |
密度 | 2.615 g/cm3(固体) |
熔点 | 1625 °C(1898 K) |
溶解性(水) | 难溶 |
热力学 | |
ΔfHm⦵298K | -1188.670 kJ/mol[1] |
S⦵298K | 53.35 J/mol·K [1] |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
制备
早期方法
偏铝酸锂粉末的制备是基于Al
2O
3和含锂化合物如Li
2CO
3、LiOH、Li
2O、LiAc等的固相反应,反应温度为400 - 1000℃。由于锂在高温下的挥发与来自研磨设备的污染,一定粒径的纯净的偏铝酸锂难以合成。[2]
参考文献
- R. Robie, B. Hemingway, and J. Fisher, “Thermodynamic Properties of Minerals and Related Substances at 298.15K and 1bar Pressure and at Higher Temperatures,” US Geol. Surv., vol. 1452, 1978.
- Chatterjee & Naskar “Novel technique for the synthesis of lithium aluminate (LiAlO2) powders from water-based sols” Journal of Materials Science Letters, Vol 22, Issue 24, pp 1747-1749
- Synthesis of lithium aluminate by thermal decomposition of a lithium dawsonite-type precursor J. Jimenez-Becerril & I. Garcia-Sosa, Journal of Ceramic Processing Research. Vol. 12, No. 1, pp. 52-56 (2011)
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