催化作用
傅里叶变换红外光谱
衍射仪
硼氢化钠
感应耦合等离子体
超级电容器
磷酸
核化学
化学
氢气储存
材料科学
扫描电子显微镜
氢
化学工程
电化学
电极
有机化学
复合材料
等离子体
量子力学
物理
工程类
物理化学
摘要
In this study, pomegranate peel (PP) waste was used as an efficient, cost-effective, and metal-free catalyst for the methanolysis reaction of sodium borohydride (NaBH4); furthermore, the prepared active material was utilized as a supercapacitor for electricity storage. The effect of several parameters, such as different acid concentrations, burning temperature, and burning times on the catalytic performance of the pomegranate peel catalyst (PP-H3PO4-Cat) were examined. Under optimum conditions, the most active catalyst was obtained by burning with 7 M phosphoric acid (H3PO4) solution at 400°C for 45 minutes. The maximum hydrogen generation rate (HGR) obtained from the methanolysis reaction of NaBH4 at 30°C and 60°C was found as 57 200 and 76 228 mL min−1 gcat−1, respectively. The activation energy value for the catalytic methanolysis reaction was calculated as 7.89 kJ mol−1. Furthermore, Fourier transform infrared spectroscopy (FTIR), inductively coupled plasma - optical emission spectrometry (ICP-OES), X-ray diffractometer spectroscopy (XRD), Brunauer-Emmett-Teller (BET), and scanning electron microscope (SEM) analyses were performed for characterization of the synthesized catalyst. The gravimetric capacitance of the prepared electrode (catalyst material with best results) was calculated as 29 F/g at 0.25 A/g current density. The electrodes made from biomass waste are both cheap and have a good capacity.
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