The present study aims to explore the physico-chemical structure evolution characteristic during Yangchangwan bituminous coal (YCW) gasification in the presence of iron-based waste catalyst (IWC). The catalytic gasification reactivity of YCW was measured by thermogravimetric analyzer. Scanning electron microscope–energy dispersive system, nitrogen adsorption analyzer and laser Raman spectroscopy were employed to analyze the char physico-chemical properties. The results show that the optimal IWC loading ratio was 5 wt% at 1000 °C. The distribution of IWC on char was uneven and Fe catalyst concentrated on the surface of some chars. The specific surface area of YCW gasified semi-char decreased significantly with the increase of gasification time. i.e., the specific surface area reduced from 382 m²/g (0 min) to 192 m²/g (3 min), meanwhile, the number of micropores and mesopores decreased sharply at the late gasification stage. The carbon microcrystalline structure of YCW gasified semi-char was gradually destroyed with the increase of gasification time, and the microcrystalline structure with small size was gradually generated, resulting in the decreasing order degree of carbon microcrystalline structure. IWC can catalyze YCW gasification which could provide theoretical guidance for industrial solid waste recycling.

本研究旨在探讨在存在铁基废催化剂（IWC）的情况下羊场湾烟煤（YCW）气化过程中的理化结构演变特征。通过热重分析仪测量YCW的催化气化反应性。使用扫描电子显微镜-能量分散系统，氮吸附分析仪和激光拉曼光谱分析炭的物理化学性质。结果表明，最佳的IWC负载比在1000°C下为5 wt％。IWC在炭上的分布不均匀，Fe催化剂集中在某些炭的表面上。YCW气化半焦比表面积随气化时间的增加而显着降低。即比表面积从382 m ²减小/ g（0分钟）至192 m ² / g（3分钟），同时，气化后期微孔和中孔的数量急剧减少。随着气化时间的增加，YCW气化半焦的碳微晶结构逐渐被破坏，逐渐生成小尺寸的微晶结构，导致碳微晶结构的有序度降低。万国（IWC）可以催化YCW气化，这可以为工业固体废物回收提供理论指导。