School of Naval Architecture and Maritime, Zhejiang Ocean University, Zhoushan 316022, China.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
Int J Environ Res Public Health. 2023 Jan 18;20(3):1760. doi: 10.3390/ijerph20031760.
Durian shell, a biomass waste, was simply burned and then could serve as a heterogeneous catalyst for the transesterification reaction of palm oil with methanol at room temperature. The chemical composition, structure, and morphology of the catalyst were well-characterized by XRD, BET, SEM, TEM, EDS, TGA, FT-IR, and XPS measurement. With the preparation temperature rising to 350 °C, the maximum yield of the biodiesel could reach 94.1% at room temperature, and the optimum reaction conditions were 8 wt.% catalyst, 8:1 methanol/oil molar ratio, ad 2.5 h reaction time. The characterizations results indicated that KO and KCO existed on the surface of catalyst, and a moderate amount of carbon, which acts as a carrier, attributed to the activity of the catalyst. After repeating five times, the catalyst prepared at 350 °C showed better stability than other catalysts. This might be because the incomplete combustion of the remaining carbon slowed down the loss of K to some extent.
榴莲壳是一种生物质废料，简单燃烧后可作为室温下棕榈油与甲醇酯交换反应的非均相催化剂。通过 XRD、BET、SEM、TEM、EDS、TGA、FT-IR 和 XPS 测量对催化剂的化学组成、结构和形态进行了很好的表征。随着制备温度升高到 350°C，在室温下生物柴油的最大产率可达 94.1%，最佳反应条件为 8wt%催化剂、8:1 甲醇/油摩尔比和 2.5h 反应时间。表征结果表明，催化剂表面存在 KO 和 KCO，适量的碳作为载体，这归因于催化剂的活性。重复使用五次后，在 350°C 下制备的催化剂比其他催化剂具有更好的稳定性。这可能是因为剩余碳的不完全燃烧在一定程度上减缓了 K 的流失。
