论文部分内容阅读
ＣＨ４－ＣＯ２重整制合成气反应（ＭＣＲ）中导致Ｎｉ基催化剂失活的主要原因可能有二：一是助剂组份碳酸化生成稳定碳酸盐物种毒化了反应活性位；二是笼状（包括石墨态和无定型态）炭的沉积覆盖了催化剂表面。ＭＣＲ反应中炭的沉积主要有两种形式：一是以须状形式进行堆集，二是以笼状形式覆盖于催化剂表面，前者对于催化剂活性的保持似无明显影响，后者则是导致催化剂失活的主要原因之一。
There are two main reasons for the deactivation of Ni-based catalysts in the CH4-CO2 reforming syngas reaction (MCR). One is that the carbonation of the promoter components produces stable carbonate species that poison the reactive sites and the other is cage-like (Including graphite state and amorphous state) carbon deposition covered the catalyst surface. There are mainly two forms of carbon deposition in the MCR reaction: one is in the form of whiskers, the other is in the form of a cage covered on the surface of the catalyst. The former has no obvious effect on the activity of the catalyst while the latter leads to the catalyst loss One of the main reasons for living.