MgO-modified activated biochar for biojet fuels from pyrolysis of sawdust on a simple tandem micro-pyrolyzer,Bioresource Technology

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MgO-modified activated biochar for biojet fuels from pyrolysis of sawdust on a simple tandem micro-pyrolyzer
Bioresource Technology ( IF 9.7 ) Pub Date : 2022-06-17 , DOI: 10.1016/j.biortech.2022.127500
Hari Prasad Reddy Kannapu ₁ , Sumin Pyo ₁ , Su Shiung Lam ₂ , Jungho Jae ₃ , Gwang Hoon Rhee ₄ , Moonis Ali Khan ₅ , Byong-Hun Jeon ₆ , Young-Kwon Park ₁

Affiliation

The aim of this work was to study on MgO-modified KOH activated biochar (AC) catalysts, in the pyrolysis of sawdust for the direct production of bio-jet fuels using a tandem micro-pyrolyzer. AC catalysts with various MgO contents (5 to 20 wt%) were synthesized using an impregnation method. The mesopores generated (4 to 18 nm) in the carbon has a great potential in the conversion of oxygenated to jet fuel. The importance of basic nature in the catalysts is demonstrated with the maximum bio-jet fuel yield of 29 % at 10 % MgO. Further, the temperature of 600 °C and a catalyst/sawdust ratio of 10 are identified as the optimal conditions. The nanosize of MgO and the synergism of acid and base sites seemed to enhance deoxygenation, via decarboxylation and decarbonylation, and oligomerization, which are required for jet fuel formation in high amounts from sawdust pyrolysis.

中文翻译：

用于生物喷气燃料的 MgO 改性活性生物炭，在简单的串联微型热解器上热解木屑

这项工作的目的是研究 MgO 改性 KOH 活化生物炭 (AC) 催化剂，用于使用串联微型热解器热解锯末直接生产生物喷气燃料。采用浸渍法合成了不同 MgO 含量（5 至 20 wt%）的 AC 催化剂。碳中产生的中孔（4至18纳米）在将含氧燃料转化为喷气燃料方面具有巨大潜力。 10% MgO 时生物喷气燃料的最大产率为 29%，证明了催化剂中碱性性质的重要性。此外，600℃的温度和10的催化剂/锯末比被确定为最佳条件。氧化镁的纳米尺寸以及酸碱位点的协同作用似乎可以通过脱羧和脱羰以及低聚来增强脱氧作用，这是锯末热解形成大量喷气燃料所必需的。

更新日期：2022-06-17

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