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利用红外光谱 (IR)研究了不同状态及钼含量的催化剂结构 ,得到如下结论 :不论是氧化态催化剂、还是硫化态催化剂 ,高温处理都引起了钼物种的聚集 ;氧化态样品上存在Mo(T)、Mo(O)和MoO3物种 ,硫化态样品上有Mo(T)、Mo(O)和SO2 -4 物种 ;并和激光喇曼光谱(LRS)的研究结果进行了对比 ,对于氧化态样品 ,IR和LRS的结论比较一致 ,而对硫化态样品 ,二者的结论相互补充。
The structures of the catalysts with different states and molybdenum content were studied by IR spectroscopy. The conclusions are as follows: High temperature treatment caused the aggregation of molybdenum species in both oxidized and sulfided catalysts; the presence of Mo (T ), Mo (O) and MoO3 species, and Mo (O) and SO2-4 species in the sulfided samples. The results were compared with those of laser Raman spectroscopy (LRS) , IR and LRS conclusions are more consistent, and for the sulfide samples, the two complement each other.