Supercritical methanol for one put biodiesel production from chlorella vulgaris microalgae in the presence of CaO/TiO2 nano-photocatalyst and subcritical water
Supercritical methanol for one put biodiesel production from chlorella vulgaris microalgae in the presence of CaO/TiO2 nano-photocatalyst and subcritical water
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DOI：
10.1016/j.biombioe.2019.02.011
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发表时间：
2019-04-01
影响因子：
6
通讯作者：
Hamadanian, Masood
中科院分区：
文献类型：
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作者：
Aghilinategh, Maryam;Barati, Mohammad;Hamadanian, Masood
采用超临界甲醇对微藻生物质进行一次性生物柴油的制备。在亚临界水存在和不存在的情况下，在催化和非催化程序中产生脂肪酸甲酯（FAME）烃和含氧化合物。采用光化学法在TiO2上合成了CaO纳米粒子。在超临界甲醇中加入催化剂和水可使总收率提高51.6%，FAME收率提高28.1%，烃类收率提高2.5倍，含氧化合物收率提高3.8倍。在产物中未检测到CaO，并且产物随时间推移未发生颜色变化。从反应机理出发，阐述了催化剂和亚临界水对产品质量和产量的影响。因此，可以提出，在亚临界条件下的水溶解生物质的细胞壁，并促进生物油到催化剂表面的传质。此外，它在催化剂表面上产生中间体，可以加速FAME和含氧化合物的产生。
Supercritical methanol was used for one put biodiesel production from microalgae biomass. Fatty acid methyl esters (FAMEs) hydrocarbons, and oxygenates were produced in catalytic and non-catalytic procedures in the presence and absence of subcritical water. The CaO nanoparticles were synthetized using photochemical method on TiO2. Addition of catalyst and water to supercritical methanol could increase total product yield up to 51.6%, FAMEs yield up to 28.1%, hydrocarbons yield up to 2.5 times, and oxygenates yield up to 3.8 times. No CaO was detected in products and no color change occurred for product over time. The effects of catalysts and subcritical water on quality and quantity of products were described using reaction mechanisms. Accordingly, it can be proposed that water in subcritical condition dissolves cell wall of biomass and facilitates mass transfer of bio-oil to catalyst surface. In addition, it produces intermediates on catalyst surface that can accelerate FAMEs and oxygenates production.