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在Ｍｏ／ＨＺＳＭ－５基甲烷非氧化脱氢芳构化催化剂中加入促进剂ＺｎＳＯ４，使该催化剂的活性和操作稳定性大为改善．对非促进的Ｍｏ／ＨＺＳＭ－５和促进型的Ｍｏ－ＺｎＳＯ４／ＨＺＳＭ－５甲烷芳构化催化剂的ＮＨ３－ＴＰＤ研究结果表明，促进剂ＺｎＳＯ４的加入大大提高了催化剂表面的Ｂ－酸位浓度；这种Ｂ－酸位能较稳定地存在于催化剂表面，不易流失；催化剂表面高浓度Ｂ－酸位的稳定存在是其甲烷非氧化脱氢催化活性显著提高的关键因素．Ｈ２－ＴＰＲ结果显示，过高的焙烧温度不仅不利于维持催化剂的表面酸性位（尤其是Ｂ－酸位）的浓度，还可能导致催化剂表面Ｍｏ物种的聚集和ＭｏＯ３微晶的生成，使同一Ｍｏ负载量的催化剂中可还原至较低价态的Ｍｏ物种所占比例下降．
Addition of ZnSO4 to Mo / HZSM-5-based non-oxidative dehydroaromatization catalyst greatly improves the activity and operational stability of the catalyst. The results of NH3-TPD study on non-promoted Mo / HZSM-5 and promoted Mo-ZnSO4 / HZSM-5 methane aromatization catalysts showed that the addition of ZnSO4 promoted the concentration of B-acid on the catalyst surface greatly. This B-acid site can be more stable on the catalyst surface, easy to drain; the high concentration of B-acid sites on the catalyst surface is the presence of methane catalytic activity of non-oxidative dehydrogenation significantly increased the key factors. The results of H2-TPR showed that the calcination temperature was too high not only to maintain the concentration of acid sites (especially the B-acid sites), but also to cause the aggregation of Mo species and the formation of MoO3 crystallites on the catalyst surface. The proportion of Mo species reducible to the lower valence state in the supported catalyst decreased.