Fe₂O₃ and bluecoke (BC) powder are used in preparing novel and cheap carbon-based absorbers through simple mechanical ball milling and by enhancing catalytic microwave pyrolysis. The electromagnetic and catalytic properties of the active compositions and matrices are controlled, and the characteristics of the prepared Fe₂O₃@BC absorbers and pyrolysis products are detected and analyzed in detail through SEM–EDS, XRD, FT-IR, TG-DTG, and GC-MS. Results show that most of the Fe₂O₃ particles aggregate and uniformly form numerous flower clusters on the surfaces of the BC fragments, developing many edges and interface structures. The presence of iron oxides and iron in BC with Fe₂O₃ indicates that the catalysis of Fe₂O₃ on coal is caused by the iron mixture. Enhancement in microwave pyrolysis significantly and rapidly increases temperature and product distribution, and the maximum tar yield of 7.94 wt% is obtained with the Fe₂O₃@BC absorber. Product analysis shows that the “hot spot” effect of BC and Fe₂O₃ and the activation of Fe₂O₃ on free hydrogen result in the complete microwave pyrolysis of low-rank coal and thereby improve the yield and quality of tar and coal gas. Possibly caused by the introduction of magnetic loss and “rim–edge” effect, which enhances catalytic microwave pyrolysis, the synergistic effects of Fe₂O₃ and BC are confirmed by theoretical calculation and experiment results. The microwave pyrolysis technology of low-rank coal is feasible because of good economic and energy efficient microwave pyrolysis of low-rank coal, and fully utilized pyrolysis products and by-products.

通过简单的机械球磨和增强催化微波热解作用，Fe ₂ O ₃和蓝焦（BC）粉末可用于制备新型且廉价的碳基吸收剂。控制活性成分和基质的电磁和催化性能，并通过SEM-EDS，XRD，FT-IR，TG-DTG详细检测和分析制备的Fe ₂ O ₃ @BC吸收剂和热解产物的特性。和GC-MS。结果表明，大多数Fe ₂ O ₃颗粒聚集并均匀地在BC碎片的表面上形成许多花簇，形成许多边缘和界面结构。BC中铁与铁的氧化物和铁的存在₂ O ₃表示Fe ₂ O ₃在煤上的催化作用是由铁混合物引起的。微波热解的增强显着且迅速地增加了温度和产物分布，并且使用Fe ₂ O ₃ @BC吸收剂获得的最大焦油收率为7.94 wt％。产物分析表明，BC和Fe的“热点”效果₂ ö ₃和Fe的活化₂ ö ₃游离氢上的碳原子能使低阶煤完全微波热解，从而提高焦油和煤气的收率和质量。理论计算和实验结果证实了Fe ₂ O ₃和BC的协同作用，可能是由于引入了磁损耗和“边缘-边缘”效应而增强了催化微波热解作用。低阶煤的微波热解技术是可行的，因为低阶煤的微波热解具有良好的经济性和能源效率，并且充分利用了热解产物和副产物。