In the present study, a series of municipal sludge derived solid acids, synthesized through hydrothermal pre-carbonization coupled with secondary pyrolysis method, were developed for levoglucosenone (LGO) production via cellulose fast pyrolysis. Specific physico-chemical characterizations such as XRD, FTIR, N₂ adsorption-desorption, NH₃-TPD, etc., were undertaken to reveal the structural properties of as-prepared solid acids. Phosphoric acid and sulfuric acid decorated municipal sludge derived carbon-based materials containing abundant Brønsted acid sites remarkably facilitated the selective formation of LGO. Particularly, high LGO yield (~20 wt%) were achieved using both phosphoric and sulfonic acid functionalized municipal sludge derived porous carbon. The as-prepared municipal sludge derived solid acids could be reused for multiple cycles in LGO preparation without significant decline in pyrolysis performance. This research will provide good reference for the resource utilization of lignocellulosic biomass and municipal sludge, particularly in the aspect of valuable chemicals manufacture.

在本研究中，开发了一系列城市污泥衍生的固体酸，通过水热预碳化结合二次热解法合成，用于纤维素快速热解生产左旋葡糖烯酮 (LGO)。_{XRD、FTIR、N 2}吸附-解吸、NH ₃等特定物理化学表征-TPD等，用于揭示所制备的固体酸的结构特性。磷酸和硫酸装饰的市政污泥衍生的碳基材料含有丰富的布朗斯台德酸位点，显着促进了 LGO 的选择性形成。特别是，使用磷酸和磺酸官能化城市污泥衍生的多孔碳实现了高 LGO 产率（~20 wt%）。所制备的城市污泥衍生的固体酸可以在 LGO 制备中重复使用多个循环，而不会显着降低热解性能。本研究将为木质纤维素生物质和城市污泥的资源化利用，特别是在有价值化学品制造方面提供良好的参考。