释放可再生潜力:利用植物合成的氧化锌纳米催化剂从 Nannorrhops ritchieana L. 种子油中生产生物柴油

Rozina , Okezie Emmanuel , Mushtaq Ahmad , Thaddeus C. Ezeji
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引用次数: 0

摘要

利用高价值生物质资源合成绿色可再生生物柴油是减少温室气体排放的有效策略,也是替代日益枯竭的化石燃料的一种可持续方法。在本研究中,使用用 Alternanthera pungens 的水性叶提取物合成的氧化锌纳米颗粒(ZnONPs),对含油量为 25% 的极具前景的种子油原料 Nannorrhops ritchieana 生产生物柴油的情况进行了评估。在甲醇与油的摩尔比为 7:1、催化剂负载量为 0.18 wt%、反应温度为 80 °C、反应时间为 180 分钟的最佳反应条件下,生物柴油产量最高,达到 95%。对合成的 ZnONPs 的分析表明,其具有纯净、热稳定性和纳米级的性质,平均粒径为 22 纳米。气相色谱-质谱(GC-MS)分析确定了甲基酯的不同峰值,其中 9-十八碳烯酸(Z)-甲基酯的浓度最高。生物柴油的燃料特性--密度(0.912 kg/m3)、粘度(6.45 mm2/s)、闪点(93 °C)、浊度(-7 °C)和倾点(-10 °C)--均符合国际燃料标准。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Unlocking renewable potential: Biodiesel production from Nannorrhops ritchieana L. seed oil using phytosynthesized zinc oxide nano-catalyst

The use of high-value biomass resources for the green and renewable synthesis of biodiesel is an effective strategy for reducing greenhouse gas emissions and providing a sustainable alternative to depleting fossil fuels. In the present study, Nannorrhops ritchieana, a highly promising seed oil feedstock with 25 % oil content, was evaluated for biodiesel production using zinc oxide nanoparticles (ZnONPs) synthesized with aqueous leaf extract of Alternanthera pungens. The highest biodiesel yield of 95 % was achieved under optimum reaction conditions: a methanol to oil molar ratio of 7: 1, catalyst loading of 0.18 wt%, a reaction temperature of 80 °C, and a reaction time of 180 min. Analysis of the synthesized ZnONPs revealed its pure, thermally stable and nanoscale nature, with an average particle size of 22 nm. Gas chromatography mass spectroscopy (GC-MS) analysis identified distinct peaks of methyl esters, with 9-Octadecenoic acid, (Z)-methyl ester having the highest concentration. The fuel properties of the biodiesel— density (0.912 kg/m3), viscosity (6.45 mm2/s), flash point (93 °C), cloud (-7 °C), and pour point (-10 °C)— aligned with international fuel standards.

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