对三种典型金属Ni、Cu、Cr及其氧化物膜NiO、CuO和Cr2O3在碳氢化合物热 裂解反应中的结焦特点和发生碳势还原反应的可能性进行了系统的理论分析.在800℃ 条件下进行结焦加速实验，结合扫描电境（SEM）、Ｘ射线能谱（EDAX）和Ｘ射线光电子谱 （XPS）对结焦表面进行表面形貌、元素成份和化合价态分析，揭示了上述三种金属及其氧 化物膜不同的结焦行为和结焦机理.
The present paper, for three kinds of typical metals, Ni, Cu, Cr, and their oxide films NiO, CuO, Cr2O3, firstly analyzes the coking characteris tics in thermal cracking reaction of hydrocarbons and the possibilities of reduc tion , then they were tested separately with a quick coking device at 800℃, com bing with the analysis of morphology, elemental composition and valence on the s urface by scan electron microscope (SEM), electron dispersion X-ray analysis (ED AX) and X-ray photoelectron spectroscope (XPS), it was uncovered that the three kinds of metals and their oxide films have the different coking behaviors and co king mechanisms.
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