Hollow tubular potassium magnesium titanate with high thermal stability
Hollow tubular potassium magnesium titanate with high thermal stability
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DOI：
10.1016/j.matlet.2018.02.019
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发表时间：
2018-05
影响因子：
3
通讯作者：
Zhou Wang;Chen Meijing;Hao Liu;Xitang Wang;Yan Ma;Ji Pengcheng
中科院分区：
文献类型：
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作者：
Zhou Wang;Chen Meijing;Hao Liu;Xitang Wang;Yan Ma;Ji Pengcheng
以Mg（OH）2、TiO（OH）2和K2 CO 3为原料，KCl为助熔剂合成了中空管状钛酸钾镁（KMTO）。研究了KMTO的热稳定性以及不同温度处理后KMTO在近红外波段的反射率。结果表明，在850 °C下煅烧2 h，可得到长度为4-15 μm、直径为1-2 μm的中空管状KMTO粉体。制得的KMTO粉体具有良好的结构热稳定性和近红外反射率。当煅烧后的粉体在1500 °C进行热处理时，只有少量的KMTO分解为MgTi 2 O 5和TiO 2。此外，高温处理对KMPO的高近红外反射率影响较小。结果表明，所制备的KMTO具有良好的热稳定性。
Hollow tubular potassium magnesium titanate (KMTO) were synthesized using Mg(OH)2, TiO(OH)2and K2CO3as the raw materials and KCl as the flux. We studied the thermal stability of the KMTO and the reflectivity in the near-infrared wavelength range of KMTO treated at different temperatures. The results indicated that hollow tubular KMTO powders 4–15 μm in length and 1–2 μm in diameter could be obtained after being calclined at 850 °C for 2 h. The resulting KMTO powders had good thermal stability in structure and near-infrared reflectivity. Only a small amount of KMTO decomposed into MgTi2O5and TiO2when the as-calcined powders were post heat-treated at 1500 °C. Moreover, the high temperature treatment had only a minor effect on the high near-infrared reflectivities of KMTO. The results indicated that the prepared KMTO exhibited excellent thermal stability.