载体对镍基催化剂CH_4/CO_2重整制合成气性能的影响

Effect of Supporter on the Performance of Ni Based Catalysts for CH 4/CO 2 Reforming to Syngas

在 Ｎｉ／ Ｍ ｇ Ｏ、 Ｎｉ／ Ｃａ Ｏ 和 Ｎｉ／ Ｃｅ Ｏ２ 催化剂上， Ｃ Ｈ４／ Ｃ Ｏ２ 重整制合成气的活性测试表明， Ｍ ｇ Ｏ 是一种较好的载体． Ｔ Ｐ Ｒ 实验显示， Ｎｉ Ｍｇ Ｏ 之间的相互作用比 Ｎｉ Ｃａ Ｏ 和 Ｎｉ Ｃｅ Ｏ２ 强． 现场 Ｃ Ｏ 岐化和 Ｃ Ｈ４ 解离实验表明， 催化剂表面吸附的氢会促进 Ｃ Ｏ 岐化和 Ｃ Ｈ４ 解离积炭．

Ni/MgO、 Ni/CaO and Ni/CeO 2 catalysts were prepared and their catalytic performance in CH 4/CO 2 reforming to syngas was examined. The experimental results indicated that MgO is the best supporter, since the interaction between Ni and MgO is stronger than that of Ni CaO and Ni CeO 2. The in situ CO disproportionation and CH 4 decomposition experiments showed that the adsorbed hydrogen on the surface of catalysts promoted these reactions, thus avoiding carbon deposition.