【摘要】 考察了Ｃｏ－Ｍｏ／ＨＺＳＭ－５ 催化剂的甲烷无氧芳构化性能， 并用ＮＨ３ －ＴＰＤ和ＸＲＤ方法表征了其表面结构对于甲烷芳构化的影响。结果表明， 适量引入Ｃｏ 助剂可显著提高甲烷的转化率和芳烃收率， 降低焦炭的生成， 提高催化剂的稳定性。从测定结果可知， Ｃｏ 助剂的引入可改变Ｍｏ／ＨＺＳＭ－５ 分子筛催化剂酸性， Ｃｏ 的含量不同对酸性的影响不同。Ｃｏ 助剂的引入还提高了ＭｏＯ３ 在担体上的分散度。更多还原

【Abstract】 The non oxygen aromatization feature of methane on Co Mo/HZSM 5 catalyst was investigated.The effect of catayst surface structure on methane aromatization was characterized by using NH 3 TPD and XRD.Experimental results showed that by adding advisable amount of Co promotor into catalyst,the conversion of methane and the yield of aromatics conspicuous enhanced,the formation of coke decreased,and the stability of the catalyst increased.The characteristic patterns of NH 3 TPD and XRD indicated that the addition of Co promotor changed the acidity distribution of HZSM 5 molecular sieve,an appropriate acidic ratio between strong acid and week acid was existed.The addition of Co promotor increased the dispersion of MoO 3 on the carrier.更多还原