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研究了Ｃ３－Ｃ９烷烃在不同的改性ＺＳＭ－５沸石上的反应规律．过渡金属离子改性的ＺＳＭ－５沸石显示了较高的芳烃选择性，芳烃的选择性还取决于改性金属离子的脱氧能力并可通过预硫化得到改进．钾、钡改性的沸石显示了较高的烯烃选择性，增加钾含量，烯烃选择性显著提高，但也明显抑制了催化剂的活性；提高Ｂａ含量，同样可提高烯烃选择性，但对活性影响不大．环己烯的模型反应结果表明，Ｋ，Ｂａ的作用在于抑制了双分子氢转移反应和提高了脱氢能力．红外表征结果表明，沸石表面的羟基，因不同金属改性而发生不同的变化．此外，气相氧对提高烯烃和芳烃的收率有明显作用
The reaction rules of C3-C9 alkanes on different modified ZSM-5 zeolites were studied. Transition metal ion-modified ZSM-5 zeolites show higher aromatics selectivity, which is also dependent on the deoxidation ability of the modified metal ions and can be improved by presulfiding. Potassium and barium-modified zeolites show higher olefin selectivity, increased potassium content, significantly higher olefin selectivity, but also significantly inhibited catalyst activity. Increasing the Ba content also increases olefin selectivity, but has an effect on the activity Not big. The model reaction of cyclohexene showed that the effect of K and Ba was to inhibit the bimolecular hydrogen transfer reaction and improve the dehydrogenation ability. Infrared characterization results show that the surface of the zeolite hydroxyl, due to different metal modifications and changes occur. In addition, the vapor phase oxygen to improve the yield of olefins and aromatics have a significant role