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为实现低变质煤资源化的目标,在低变质煤微波热解的基础上采用超声浸渍-焙烧法制备负载型Fe2O3/γ-Al2O3催化剂,采用场发射扫描电镜(SEM)及X射线能谱(EDS)对催化剂进行表征,研究了其对煤微波热解过程中的催化效果及机理,考察焙烧时间、焙烧温度等因素对催化剂催化活性的影响,通过气-质联用(GC-MS)及煤气分析仪对焦油及气体组分和含量进行测定。结果表明,Fe2O3/γ-Al2O3催化剂的加入提高了煤微波热解制氢气及焦油产率,超声浸渍条件下400℃焙烧4h制备的产品催化活性最佳。
In order to achieve the goal of low metamorphism coal resource utilization, the supported Fe2O3 / γ-Al2O3 catalyst was prepared by ultrasonic impregnation-roasting method on the basis of microwave pyrolysis of low metamorphism coal using field emission scanning electron microscopy (SEM) and X-ray energy spectrum EDS) was used to characterize the catalyst. The catalytic effect and mechanism of the catalyst on coal pyrolysis were investigated. The effects of calcination time, calcination temperature and other factors on the catalytic activity of the catalyst were investigated. The gas chromatography-mass spectrometry (GC-MS) Gas analyzer for tar and gas components and content determination. The results showed that the addition of Fe2O3 / γ-Al2O3 catalyst enhanced the yield of hydrogen and tar from coal pyrolysis, and the best catalytic activity was obtained when calcined at 400 ℃ for 4h under ultrasonic immersion.