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首页> 外文期刊>Fuel >Conversion of renewable feedstock to bio-carbons dedicated for the production of green fuel additives from glycerol
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Conversion of renewable feedstock to bio-carbons dedicated for the production of green fuel additives from glycerol

机译：将可再生原料转换为生物碳，致力于甘油生产绿色燃料添加剂的生物碳

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Sulfonated bio-carbon samples were prepared applying two methodologies: a) sustainable, one-step and low-cost method based on partial carbonization of renewable precursors (common carbohydrates or glycerol) in the presence of sulfuric acid, and b) two-step preparation approach, including template synthesis of carbon followed by its further modification with H2SO4 or diazonium salt. The used characterization techniques revealed significant differences in the chemical composition, surface nature and textural features of the fabricated materials. The synthesized carbons were further applied in simple batch-type, solvent-free esterification of glycerol with acetic acid to produce acetins - valuable fuel additives. The reaction was conducted at 110 degrees C with glycerol to acetic acid molar ratio of 1:6. The experiments showed that the prepared catalysts can work effectively, giving a very high conversion of glycerol (above 95%) and satisfactory combined selectivity (about 70%) to di- and triacetins (target products) within only 2 h. Moreover, the carbons did not lose their activities in subsequent cycles. The dependence between catalysts' performance and the concentration of -SO3H groups was found.
机译：制备磺化生物碳样品，适用于两种方法：a）基于硫酸存在的可再生前体（常见的碳水化合物或甘油）的部分碳化的可持续，一步和低成本方法，B）两步制备方法，包括碳的模板合成，然后用H 2 SO 4或重氮盐进行进一步改性。所用表征技术揭示了制造材料的化学成分，表面性质和纹理特征的显着差异。合成的碳进一步以简单的批量型，无溶剂 - 无溶剂的酯化用乙酸制备乙酸酯 - 有价值的燃料添加剂。将反应在110℃下用甘油进行，乙酸摩尔比为1：6。该实验表明，制备的催化剂可以有效地工作，从2小时内施用非常高的甘油（高于95％）和令人满意的组合选择性（约70％）（约70％）到2小时内的糖蛋白（靶产物）。此外，碳并未在随后的周期中失去他们的活动。发现催化剂性能与-SO3H组浓度之间的依赖性。

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