Hydrothermal synthesis of humidity-regulating material from calcined loess

Yi Zhang, Zhenzi Jing, Xinwei Fan, Junjie Fan, Lei Lu, Hideki Ishida

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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 material in cities to save energy.

Original languageEnglish
Pages (from-to)4779-4786
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume52
Issue number13
DOIs
Publication statusPublished - 2013 Apr 3

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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