This research is dedicated to the study on the formation of levoglucosenone and other main volatiles from the catalytic pyrolysis with the addition of phosphoric acid of birch wood and lignocelluloses obtained by birch wood hydrothermal treatment. Py-GC/MS/FID method was used to evaluate the contents of the main products. Lignocelluloses were found to be a more promising precursor to obtain levoglucosenone with lesser content of furfural: For birch wood and lignocelluloses hydrothermally treated at 150 and 180 °C, Py-GC/MS/FID revealed levoglucosenone yields of 12.83, 16.94 and 21.08%, correspondingly (at 5% phosphoric acid addition). When birch wood impregnated with 5% H 3 PO 4 was pyrolized in the laboratory screw-type reactor, the levoglucosenone yield was 6.5%. The composition and content of volatiles formed in analytical pyrolysis, bio-oil and its chloroform extract were compared. Extraction of bio-oil with chloroform and consequent distillation resulted in fractions containing 79.14% of levoglucosenone.

中文翻译：

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分析热解螺杆式反应器分离精馏所得左旋葡萄糖酮的研究

本研究致力于研究桦木和桦木水热处理得到的木质纤维素在加入磷酸的催化热解中形成左旋葡萄糖酮和其他主要挥发物。采用Py-GC/MS/FID方法评价主要产品的含量。发现木质纤维素是一种更有前途的前体，用于获得含有较少糠醛的左旋葡萄糖酮：对于在 150 和 180 °C 下水热处理的桦木和木质纤维素，Py-GC/MS/FID 显示左旋葡萄糖酮的产率为 12.83%、16.94% 和 21.00%。相应地（添加 5% 的磷酸）。当用5% H 3 PO 4 浸渍的桦木在实验室螺杆式反应器中热解时，左旋葡萄糖酮收率为6.5%。分析热解中形成的挥发物的组成和含量，生物油及其氯仿提取物进行了比较。用氯仿提取生物油并随后蒸馏得到含有 79.14% 左旋葡萄糖酮的馏分。