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分析积碳中的含镍量表明:在轻油水蒸汽转化制氢镍催化剂上,每100毫克催化剂上积碳量在10毫克以下时,碳中含镍量和积碳量成正比;在10毫克至25毫克之间时,碳中含镍量近似和积碳量的对数成正比;大于25毫克时,碳中含镍量不再随积碳量而变。消碳速度和积碳量之间也有类似的三种关系。这是由于这种催化剂上的消碳是镍催化消碳,消碳速度和碳中含镍量之间是正比关系。电镜观察和摄影证明,较快速的积碳主要呈碳丝状,这些碳丝交织成三维的网架结构。580℃以上消碳过程的速率控制步骤是通过这些碳网架孔的扩散。
Analysis of nickel content in carbon deposits shows that the amount of nickel contained in carbon is proportional to the amount of carbon deposited when the amount of carbon deposited per 100 mg of catalyst is less than 10 mg per 100 mg of catalyst on light-oil steam reforming; To between 25 mg, the nickel content in the carbon is approximately proportional to the logarithm of the amount of carbon deposited; when it is greater than 25 mg, the amount of nickel in the carbon no longer varies with the amount of carbon deposited. There is a similar relationship between the rate of carbon removal and the amount of carbon deposited. This is due to the fact that the carbon removal on this catalyst is a nickel-catalyzed carbon abatement that is directly proportional to the rate of carbon removal and carbon content. Electron microscopy and photographic evidence showed that the faster carbon deposits were mainly carbon filaments, and the carbon filaments were interlaced into a three-dimensional grid structure. The rate control steps above 580 ° C for carbon removal are diffusion through these carbon grid holes.