Hydrothermal Synthesis of Humidity-Regulating Material from Calcined Loess
Hydrothermal Synthesis of Humidity-Regulating Material from Calcined Loess
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DOI：
10.1021/ie303232g
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发表时间：
2013-03
影响因子：
4.2
通讯作者：
Y. Zhang;Z. Jing;Xinwei Fan;Jun-jie Fan;Lei Lu;E. H. Ishida
中科院分区：
文献类型：
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作者：
Y. Zhang;Z. Jing;Xinwei Fan;Jun-jie Fan;Lei Lu;E. H. Ishida
为了模拟窑洞冬暖夏凉的热特性，利用黄土水热法合成了一种具有良好调湿性能的介孔材料。通过黄土的煅烧，既通过黄土中方解石的分解提供活性钙，又通过脱羟基提高反应性，无需任何添加剂即可合成坚韧的介孔材料，并且发现雪硅钙石的形成对其强度和孔隙率产生积极影响。中孔似乎对黄土材料的湿度调节性能产生积极影响。虽然煅烧破坏了黄土原有的孔隙率，但通过水热处理可以大大恢复孔隙率，从而恢复调湿性能。因此，仅使用煅烧黄土，合成了一种具有良好调湿性能的坚韧介孔材料，可用作“窑洞”建筑材料......
To simulate the thermal properties of cave dwellings, which are warm in winter and cool in summer, a mesoporous material with a good humidity-regulating performance was synthesized hydrothermally from loess. Through the calcination of loess, which both provides active calcium through the decomposition of calcite within loess and improves the reactivity by dehydroxylation, a tough mesoporous material could be synthesized without any additives, and tobermorite formation was found to exert a positive effect on its strength and porosity. Mesopores seemed to exert a positive influence on the humidity-regulating performance of the material from loess. Although calcination destroyed the original porosity of the loess, the porosity and thus the humidity-regulating performance could be recovered greatly through hydrothermal treatment. As such, using only calcined loess, a tough mesoporous material exhibiting good humidity-regulating performance was synthesized that could be used as a “cave-dwelling” building mater...