Abstract The mechanical activation of the mixture of aspen wood – high silica zeolite catalysts increases the wood thermal conversion in supercritical ethanol and rises the yield of liquid products. TH-HSZ-30 with Si/Al = . Zeolite catalysts allow to fractionate the mechanically activated wood in supercritical ethanol at 270 °C on solid lignocellulose and on soluble products from hemicelluloses, presented by furfural, 5-hydroxymethylfurfural, levulinic acid and ethyl esters. The elevated temperature (350 °C) decreases the yield of liquid products due to the intensification of secondary reactions of their transformation to gases and chars. The possible mechanism of wood catalytic conversion to bio-liquids in supercritical ethanol is discussed.

中文翻译：

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高硅沸石催化剂存在下白杨木在超临界乙醇中的热转化

摘要 白杨木-高硅沸石催化剂混合物的机械活化提高了木材在超临界乙醇中的热转化率，提高了液体产物的产率。TH-HSZ-30 与 Si/Al = . 沸石催化剂允许在 270 °C 的超临界乙醇中对固体木质纤维素和半纤维素的可溶性产物（由糠醛、5-羟甲基糠醛、乙酰丙酸和乙酯表示）分馏机械活化木材。升高的温度 (350 °C) 会降低液体产品的产率，因为它们会加剧转化为气体和炭的二次反应。讨论了木材在超临界乙醇中催化转化为生物液体的可能机制。