甲烷二氧化碳转化制合成气稀土助剂抗积炭性能的研究

STUDIES OF REFORMING METHANE WITH CARBON DIOXIDE TO PRODUCE SYNTHESIS GASSTUDIES OF RARE EARTH PROMOTER RESISTANCE TO CARBON DEPOSITION

利用脉冲微型反应色谱装置研究了Ｎｉ－２，Ｎｉ－２－Ｃｅ，Ｎｉ－２－Ｃｅ－Ｍｇ催化剂ＣＨ４脱氢和ＣＯ２消炭反应，结果表明：ＣｅＯ２能够抑制甲烷脱氢积炭反应，增加催化剂表面炭的活性，同时提高ＣＯ２的消炭能力．ＸＲＤ研究表明，加入ＣｅＯ２和ＭｇＯ助剂后，能够提高Ｎｉ的分散度，从而使Ｎｉ－２－Ｃｅ－Ｍｇ具有高活性、选择性而且具有很高的抗积炭性能和稳定性．

The reaction of methane dehydrogenation carbon dioxide elimination was studied by using a fixed-bed pulse reactor chromatography.The results showed that CeO 2 could inhibit carbon deposition of methane dehydrognation,enhance the activity on the surface of catalyst and increase the ability of carbon dioxide elimination. The studies of XRD showed that existence of CeO 2 and MgO could improve dispersing degree of Ni,thus making Ni-2-Ce-Mg having not only high activity and selectivity,but also high stability and good resistance to carbon deposition for reforming methane with carbon dioxide.