Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 240, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2022.111696
Keywords
Thermochemical storage of solar heat; Magnesium sulfate; Hydroxyapatite; Water sorption; Adsorption kinetics
Funding
- STOCKFATAL project
Ask authors/readers for more resources
A new two-component water sorbent MgSO4 / Hydroxyapatite has been developed for sorption-based solar heat storage. The composite material has high water sorption capacity and heat of hydration, and exhibits relatively good stability.
A new two-component (composite) water sorbent MgSO4 /Hydroxyapatite has been developed for sorption-based solar heat storage. The matrix of the composite is a hydroxyapatite (HAP) material with ordered structure, high surface area of 111.3 m(2)/g and mesopore dimensions centered at 45 nm. The composites, prepared by wet-impregnation of HAP with MgSO4, have lower specific surface area and similar mesopore dimensions as the matrix. The maximum water sorption capacity of HAP is 0.039 g/g, while the composite (20-MgSO4/HAP) possesses 3.7 times higher maximum water sorption capacity due to the presence of the salt in the matrix. The HAP composite containing 20% MgSO4 achieved the highest heat of hydration 464 J/g. A long-term cycling (dehydration at 150 and hydration at 30 degrees C at a relative humidity of 60%) confirms a comparatively good stability of the composite.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available