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Parametric Study on Microwave-Assisted Pyrolysis Combined KOH Activation of Oil Palm Male Flowers Derived Nanoporous Carbons

机译：微波辅助热解结合KOH活化油棕雄花衍生的纳米孔碳的参数研究

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摘要

Oil palm male flowers (PMFs), an abundant agricultural waste from oil palm plantation in Thailand, have been utilized as an alternative precursor to develop nanoporous carbons (NPCs) via microwave-assisted pyrolysis combined potassium hydroxide (KOH) activation. The influences of relevant processing variables, such as activating agent ratio, microwave power, and activation time on the specific pore characteristics, surface morphology, and surface chemistry of PMFs derived nanoporous carbons (PMFCs) have been investigated to explore the optimum preparation condition. The optimum condition under a microwave radiation power of 700 W, activation holding time of 6 min, and activating agent ratio of 2:1 obtained the PMFC with the highest Brunauer–Emmett–Teller (BET) surface area and total pore volume approximately of 991 m /g and 0.49 cm /g, composed of a carbon content of 74.56%. Meanwhile, PMFCs have a highly microporous structure of about 71.12%. Moreover, activating agent ratio and microwave radiation power indicated a significant influence on the surface characteristics of PMFCs. This study revealed the potential of oil palm male flowers for the NPCs’ production via microwave-assisted KOH activation with a short operating-time condition.
机译：油棕雄花（PMF）是泰国油棕种植园产生的大量农业废料，已被用作通过微波辅助热解结合氢氧化钾（KOH）活化而开发纳米多孔碳（NPC）的替代前体。研究了相关工艺变量，例如活化剂比例，微波功率和活化时间对衍生自PMFs的纳米孔碳（PMFC）的比孔特性，表面形态和表面化学的影响，以探索最佳制备条件。在微波辐射功率为700 W，活化保持时间为6分钟，活化剂比率为2：1的最佳条件下，PMFC具有最高的Brunauer-Emmett-Teller（BET）表面积和约991的总孔体积m / g和0.49 cm / g，碳含量为74.56％。同时，PMFC具有约71.12％的高度微孔结构。此外，活化剂比例和微波辐射功率表明对PMFC的表面特性有显着影响。这项研究揭示了油棕雄花通过微波辅助KOH活化在短时间条件下生产NPC的潜力。

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