Porous organic–inorganic hybrid xerogels for stearic acid shape-stabilized phase change materials. (27th January 2017)

• Record Type: Journal Article
• Authors: Andriamitantsoa, Radoelizo S.; Dong, Wenjun; Gao, Hongyi; Wang, Ge
• Is Part Of: New journal of chemistry. Volume 41:Number 4(2017)
• Page Start: 1790
• Page End: 1797
• Publication Date: 2017-01-27
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c6nj03034c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The high surface area, porosity and gel properties of MOG-100 (Cr) ensure the excellent thermal properties of SA@MOG-100 (Cr) composites. Abstract : An organic–inorganic hybrid porous metal–organic gel (MOG) based on Cr 3+ and bridging benzene-1, 3, 5-tricarboxylic acid (BTC) was synthesized. The MOG exhibited good porosity, flexibility and a high surface area to encapsulate stearic acid (SA) for phase change materials (PCMs). The porosity of MOG-100 (Cr) guaranteed an excellent thermal stability of the encapsulated stearic acid. No leakage of PCMs was observed from the MOG even after heating the SA@MOG-100 (Cr) composites beyond their melting point. A maximum weight percentage as high as 90% of stearic acid has been achieved without leakage. The melting temperature of the SA@MOG-100 (Cr) composite was 71.9 °C and the total latent heat of fusion of the composite was measured to be in the range of 101–189.3 kJ kg −1 . They present excellent thermal recyclability within at least 15 melting/freezing cycles.