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研究了不同载体钼基催化剂上甲烷、乙烷的无氧芳构化反应．在所采用的载体（Ａｌ２Ｏ３、ＳｉＯ２、ＨＺＳＭ－５）中，ＨＺＳＭ－５具有最佳性能．对甲烷的芳构化反应，Ｍｏ／ＨＺＳＭ－５催化剂表现出较高的活性和芳烃选择性；而Ｍｏ／Ａｌ２Ｏ３或Ｍｏ／ＳｉＯ２催化剂则相对较差．对于乙烷的反应，钼物种的存在更有利于甲烷（ＨＺＳＭ－５或ＳｉＯ２上）或乙烯（Ａｌ２Ｏ３上）的生成，芳烃选择性相对较低．钼物种较强的断键能力可能是使甲烷Ｃ－Ｈ键活化的原因．在各种载体的催化剂上，对甲烷反应均有诱导期，而对乙烷反应却没有．ＴＰＳＲ实验表明，对于甲烷的反应，苯生成前的诱导期内出现ＣＯ２和Ｈ２Ｏ的双峰结构，这表明催化剂体系钼物种的还原是分步进行的；而对于乙烷的反应，却没有此结构．甲烷反应的诱导期应与催化剂体系钼物种的还原有关．
The anaerobic aromatization of methane and ethane over molybdenum-based catalysts with different supports was investigated. Among the supports used (Al 2 O 3, SiO 2, HZSM-5), HZSM-5 has the best properties. For the aromatization of methane, the Mo / HZSM-5 catalyst showed higher activity and aromatic selectivity, while the Mo / Al2O3 or Mo / SiO2 catalyst was relatively poor. For the ethane reaction, the presence of molybdenum species is more favorable for the formation of methane (on HZSM-5 or SiO2) or ethylene (on Al2O3), with relatively lower aromatics selectivity. The stronger bond breaking ability of molybdenum species may be responsible for the activation of methane C-H bonds. On a variety of supported catalysts, there is an induction period for methane reaction, but no reaction for ethane. TPSR experiments showed that for the methane reaction, a bimodal structure of CO2 and H2O appeared during the induction period before the benzene formation, indicating that the reduction of the molybdenum species in the catalyst system was carried out in stages; for the reaction of ethane, this structure was absent . The induction period of methane reaction should be related to the reduction of molybdenum species in the catalyst system.