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Preparation and thermal properties of n-octadecane/molecular sieve composites as form-stable thermal energy storage materials for buildings
Highlights ► The n-octadecane/molecular sieve 5A composites were prepared. ► Chemical structure and microstructure of composites were determined by FT-IR and SEM. ► Thermal properties and stabilities were investigated by DSC and TGA. ► The molecular sieve 5A can improve the thermal stability of the composites.
Abstract The n-octadecane/molecular sieve 5A composites as form-stable thermal storage materials were prepared by adsorbing liquid n-octadecane into the molecular sieve 5A. In the composites, the n-octadecane was used as thermal storage material, and the molecular sieve 5A acted as the supporting material. Fourier transformation infrared (FT-IR) spectroscope and scanning electronic microscope (SEM) were used to determine the chemical structure and microstructure of the n-octadecane/molecular sieve 5A composites. The thermal properties and thermal stability were investigated by a differential scanning calorimeter (DSC) and a thermogravimetry analyzer (TGA). The FT-IR analyses indicated that there is no chemical interaction between the n-octadecane and molecular sieve 5A. The SEM results showed that the n-octadecane was well adsorbed into the porous network of the molecular sieve 5A and there is no leakage of the n-octadecane from the composites even when it is in the melting state. The DSC results indicated that the n-octadecane/molecular sieve 5A composites exhibited the same phase change characteristics as the n-octadecane and their latent heats increased with the increase of the n-octadecane content in composites. The TGA results presented that the molecular sieve 5A can improve the thermal stability of the composites as form-stable thermal energy storage materials.
Preparation and thermal properties of n-octadecane/molecular sieve composites as form-stable thermal energy storage materials for buildings
Highlights ► The n-octadecane/molecular sieve 5A composites were prepared. ► Chemical structure and microstructure of composites were determined by FT-IR and SEM. ► Thermal properties and stabilities were investigated by DSC and TGA. ► The molecular sieve 5A can improve the thermal stability of the composites.
Abstract The n-octadecane/molecular sieve 5A composites as form-stable thermal storage materials were prepared by adsorbing liquid n-octadecane into the molecular sieve 5A. In the composites, the n-octadecane was used as thermal storage material, and the molecular sieve 5A acted as the supporting material. Fourier transformation infrared (FT-IR) spectroscope and scanning electronic microscope (SEM) were used to determine the chemical structure and microstructure of the n-octadecane/molecular sieve 5A composites. The thermal properties and thermal stability were investigated by a differential scanning calorimeter (DSC) and a thermogravimetry analyzer (TGA). The FT-IR analyses indicated that there is no chemical interaction between the n-octadecane and molecular sieve 5A. The SEM results showed that the n-octadecane was well adsorbed into the porous network of the molecular sieve 5A and there is no leakage of the n-octadecane from the composites even when it is in the melting state. The DSC results indicated that the n-octadecane/molecular sieve 5A composites exhibited the same phase change characteristics as the n-octadecane and their latent heats increased with the increase of the n-octadecane content in composites. The TGA results presented that the molecular sieve 5A can improve the thermal stability of the composites as form-stable thermal energy storage materials.
Preparation and thermal properties of n-octadecane/molecular sieve composites as form-stable thermal energy storage materials for buildings
Chen, Zhi (author) / Shan, Feng (author) / Cao, Lei (author) / Fang, Guiyin (author)
Energy and Buildings ; 49 ; 423-428
2012-02-26
6 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2016
| British Library Online Contents | 2016
| British Library Online Contents | 2016
| British Library Online Contents | 2016