Hydrothermal Synthesis of Humidity-Regulating Material from Calcined Loess

详细信息    查看全文

• 作者：Yi Zhang ; Zhenzi Jing ; Xinwei Fan ; Junjie Fan ; Lei Lu ; Emile Hideki Ishida
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：April 3, 2013
• 年：2013
• 卷：52
• 期：13
• 页码：4779-4786
• 全文大小：421K
• 年卷期：v.52,no.13(April 3, 2013)
• ISSN：1520-5045

文摘

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 鈥渃ave-dwelling鈥?building material in cities to save energy.