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Volume 8
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10.3390/min8040161
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Article

Lauric Acid Hybridizing Fly Ash Composite for Thermal Energy Storage

by
Dawei Xu
1,2,
Huaming Yang
1,2,*,
Jing Ouyang
1,2,
Yi Zhang
1,2,
Liangjie Fu
1,2 and
Deliang Chen
3,*
1
Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
2
Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha 410083, China
3
School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China
*
Authors to whom correspondence should be addressed.
Minerals 2018, 8(4), 161; https://doi.org/10.3390/min8040161
Submission received: 27 February 2018 / Revised: 8 April 2018 / Accepted: 11 April 2018 / Published: 16 April 2018
(This article belongs to the Special Issue Mineral Materials)
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Abstract

Fly ash includes different mineral phases. This paper reported on the preparation of a novel lauric acid (LA)/fly ash (FA) composite by vacuum impregnation as a form-stable phase change material (PCM) for thermal energy, and especially investigated the effect of the hydrochloric acid-treated fly ash (FAh) on the thermal energy storage performance of the composites. The morphology, crystalline structure, and porous textures of the samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), X-ray fluorescence (XRF), and differential scanning calorimetry (DSC). The results indicated that hydrochloric acid treatment was beneficial to the increase of loading capacity and crystallinity of LA in the LA/FAh composite, which caused an enhanced thermal storage capacity with latent heats for melting and freezing of LA/FAh (80.94 and 77.39 J/g), higher than those of LA/FA (34.09 and 32.97 J/g), respectively. Furthermore, the mechanism of enhanced thermal storage properties was investigated in detail.
Keywords: fly ash; mineral phase; lauric acid; hybridization; thermal energy storage fly ash; mineral phase; lauric acid; hybridization; thermal energy storage

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MDPI and ACS Style

Xu, D.; Yang, H.; Ouyang, J.; Zhang, Y.; Fu, L.; Chen, D. Lauric Acid Hybridizing Fly Ash Composite for Thermal Energy Storage. Minerals 2018, 8, 161. https://doi.org/10.3390/min8040161

AMA Style

Xu D, Yang H, Ouyang J, Zhang Y, Fu L, Chen D. Lauric Acid Hybridizing Fly Ash Composite for Thermal Energy Storage. Minerals. 2018; 8(4):161. https://doi.org/10.3390/min8040161

Chicago/Turabian Style

Xu, Dawei, Huaming Yang, Jing Ouyang, Yi Zhang, Liangjie Fu, and Deliang Chen. 2018. "Lauric Acid Hybridizing Fly Ash Composite for Thermal Energy Storage" Minerals 8, no. 4: 161. https://doi.org/10.3390/min8040161

APA Style

Xu, D., Yang, H., Ouyang, J., Zhang, Y., Fu, L., & Chen, D. (2018). Lauric Acid Hybridizing Fly Ash Composite for Thermal Energy Storage. Minerals, 8(4), 161. https://doi.org/10.3390/min8040161

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