Ionic compounds derived from crude glycerol: Thermal energy storage capability evaluation

RENEWABLE ENERGY

卷:114

Article

Escriba, Marc¹  Barreneche, Camila²  Yara-Varon, Edinson¹  Eras, Jordi¹  Sole, Aran²  Tomas, Albert¹  Cabeza, Luisa F.²  Canela-Garayoa, Ramon¹ 

[1] Univ Lleida, Chem Dept Agrotecnio, Ave Alcalde Rovira Roure 191, Lleida 25198, Spain

[2] Univ Lleida, GREA Innovacio Concurrent, Edifici CREA,Pere de Cabrera S-N, Lleida 25001, Spain

关键词: Ionic liquids (ILs);    Phase change materials (PCM);    Differential scanning calorimetry (DSC);    Thermal energy storage (TES);    Synthesis route;   

DOI  :  10.1016/j.renene.2017.07.088

来源: Elsevier

【 摘 要 】

Ionic liquids (diimidazol-1-ium esters) prepared from wastes, crude glycerol and carboxylic acids are investigated as potential phase change materials (PCM). The ionic liquids (IL) with best thermophysical properties were those with also better production yield (higher than 75%). The chemical composition of those IL was [GRAPHICS] with R-1 being (CH3)(3)CCO, CH3(CH2)14CO or C2H3CO; R-2 being BIM;+ R-3 being BIM+; and X-being 2 CI-. Phase change of state (solid-liquid) of this IL was 85 degrees C, 264 degrees C and 128 degrees C, which means potential application in different fields such as domestic hot water, solar cooling and industry, respectively. The measured melting enthalpy 328 kJ/kg, 408 kJ/kg, and 660 kJ/kg is much higher in all cases than the usual found in commercial PCM (100 kJ/kg), therefore, these ILs synthetized in this study are proper candidates to be used as PCM because of the huge amounts of energy that they are able to store and their low cost. Moreover, biobPCM are sustainable materials since its obtaining process is based on oil. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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