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Methylated mesoporous silica loaded with 1-octadecanol as a new shape-stabilized phase change material for enhanced thermal energy storage efficiency

Tuan, Huynh Nguyen Anh ; Tam, Le Minh ; Nguyen, Giang Tien

Canadian journal of chemistry, 2023-04, Vol.101 (4), p.236-241 [Periódico revisado por pares]

Ottawa: NRC Research Press

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Título:
Methylated mesoporous silica loaded with 1-octadecanol as a new shape-stabilized phase change material for enhanced thermal energy storage efficiency
Autor: Tuan, Huynh Nguyen Anh ; Tam, Le Minh ; Nguyen, Giang Tien
Assuntos: Accelerated tests ; Analysis ; Chemical properties ; Chemical reactions ; Chemical synthesis ; Crystallization ; Energy storage ; Fourier transform infrared spectroscopy ; Fourier transforms ; Heat storage ; Hydrogen bonds ; Hydroxyl groups ; Infrared analysis ; Infrared spectroscopy ; Low cost ; Mechanical properties ; Methods ; Methylation ; Phase change materials ; Silica ; Silicon dioxide ; Storage capacity ; Thermal energy ; Thermal properties ; Thermodynamic properties ; Thermogravimetric analysis ; Thermogravimetry
É parte de: Canadian journal of chemistry, 2023-04, Vol.101 (4), p.236-241
Descrição: Here, a 1-octadecanol (OD)/methylated mesoporous silica (OD/M-MS) shape-stabilized phase-change material (SSPCM) was prepared with enhanced thermal energy storage. The M-MS was synthesized by methylation of low-cost MS with trimethylchlorosilane. Fourier-transformed infrared spectroscopy (FTIR), [N.sub.2] adsorption-desorption isotherm, and thermogravimetric analysis confirmed successful methylation ofMS. OD was then impregnated into the poresof MS and M-MS to form OD/MS and OD/M-MS SSPCMs, and their thermal properties were thoroughly characterized and compared. FTIR result of OD/MS revealed interfacial hydrogen bond (H-bond) interactions between the hydroxyl group (-OH) on the OD molecules and silanol groups (Si-OH) on the MS surface. These interactions prevented the free movement and ordered arrangement of OD molecules for crystallization, thus declining the heat storage capacity. By methylating the MS surface, the H-bond interactions were suppressed and the OD/M-MS could recover the thermal performance. The heat storage capacity increased by 96.8% from 43.5J [g.sup.-1] of OD/MS to 85.6J[g.sup.-1] of OD/M-MS. Moreover, a test of 400 accelerated thermal cycles proved good thermal reliability for OD/M-MS SSPCM. This work provides an effective strategy to achieve OD/M-MS SSPCM with low cost and high thermal performance, promising for large-scale thermal energy storage applications.
Editor: Ottawa: NRC Research Press
Idioma: Inglês

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Methylated mesoporous silica loaded with 1-octadecanol as a new shape-stabilized phase change material for enhanced thermal energy storage efficiency

Tuan, Huynh Nguyen Anh ; Tam, Le Minh ; Nguyen, Giang Tien

Ottawa: NRC Research Press

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