Palm Kernel Shell Activated Carbon as an Inorganic Framework for Shape-Stabilized Phase Change Material.
Palm Kernel Shell Activated Carbon as an Inorganic Framework for Shape-Stabilized Phase Change Material.
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DOI：
10.3390/nano8090689
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发表时间：
2018-09-05
期刊：
影响因子：
--
通讯作者：
Khadiran T
中科院分区：
文献类型：
--
作者：
Nicholas AF;Hussein MZ;Zainal Z;Khadiran T
通过对炭化温度、炭化保温时间、活化剂(H3PO4)与前驱体的配比等参数的优化，成功地完成了以棕榈仁壳为前驱体的活性碳的制备。用20%H3PO4在500℃下炭化2 h，制得的活性碳(C20)的比表面积最大，为1169m2 g−1，平均孔径为27ó。随后，通过将正十八烷包裹到PKSAC-C20的孔道中，制备了形状稳定的相变材料(SSPCM-C20)。场发射扫描电子显微镜图像和氮气吸附-脱附等温线表明，正十八烷被成功地包裹到C20的孔中。由此得到的SSPCM-C20纳米复合材料具有良好的热可靠性，在化学和热稳定性上都是稳定的，可以经受500次熔融和冻结循环。本研究为利用油棕榈废料制备固体相变储能材料提供了一种新的策略。
The preparation of activated carbon using palm kernel shells as the precursor (PKSAC) was successfully accomplished after the parametric optimization of the carbonization temperature, carbonization holding time, and the ratio of the activator (H3PO4) to the precursor. Optimization at 500 °C for 2 h of carbonization with 20% H3PO4 resulted in the highest surface area of the activated carbon (C20) of 1169 m2 g−1 and, with an average pore size of 27 Å. Subsequently, the preparation of shape-stabilized phase change material (SSPCM-C20) was done by the encapsulation of n-octadecane into the pores of the PKSAC, C20. The field emission scanning electron microscope images and the nitrogen gas adsorption-desorption isotherms show that n-octadecane was successfully encapsulated into the pores of C20. The resulting SSPCM-C20 nano-composite shows good thermal reliability which is chemically and thermally stable and can stand up to 500 melting and freezing cycles. This research work provided a new strategy for the preparation of SSPCM material for thermal energy storage application generated from oil palm waste.
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