The conversion of waste cardboard using microwave assisted hydrothermal method to obtain reducing sugars and versatile chemical blocks is reported in this work. The findings revealed that microwave assisted dilute acid hydrothermal conversion of cardboard is effective and efficient, as it removed considerable amount of CaCO₃ in cardboard to keep the microwave conversion pressure at a stable status and can selectively produce value-added chemicals by changing the conversion temperature. The optimum conversion conditions for maximum aqueous bio-oil yield (29.76 wt%) was using 0.1 g of cardboard and 10 g of 2.5 wt% of phosphoric acid at MW hydrothermal condition of 175 °C for 30 min. Products compositions were changed and refined by changing the dilute acid MW hydrothermal conditions. At 150 °C, sugars were the main products; at 175 °C, levoglucosan was the main product whereas at 200 °C the major product was levulinic acid.

这项工作报道了使用微波辅助水热法转化废纸板以获得还原糖和多功能化学块。研究结果表明，微波辅助稀酸水热转化纸板是有效和高效的，因为它去除了大量的 CaCO ₃在纸板中保持微波转换压力处于稳定状态，并可以通过改变转换温度选择性地生产增值化学品。最大含水生物油产量 (29.76 wt%) 的最佳转化条件是使用 0.1 g 纸板和 10 g 2.5 wt% 磷酸，在 175 °C 的 MW 水热条件下持续 30 分钟。通过改变稀酸MW水热条件改变和精制产品组成。在 150 °C 时，糖是主要产物；在 175 °C 时，左旋葡聚糖是主要产物，而在 200 °C 时，主要产物是乙酰丙酸。