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通过改变合成条件与合成体系 ,考察了不同硅源合成的HZSM 5分子筛对Mo/HZSM 5催化剂上甲烷无氧脱氢芳构化反应性能的影响 .结果表明 ,用水玻璃合成的HZSM 5分子筛负载Mo后 ,其催化性能优于用硅溶胶合成的分子筛 .1HMASNMR测定结果表明 ,前者的Br¨onsted酸浓度较后者大 .通过改变合成条件 ,减小HZSM 5分子筛的粒度 ,可以提高催化剂在甲烷无氧脱氢芳构化反应中的稳定性
The effects of synthesis conditions and synthesis system on the anaerobic dehydroaromatization of methane over Mo / HZSM 5 catalysts were investigated by changing the synthesis conditions and the synthesis system. The results showed that HZSM 5 zeolite synthesized by water glass supported Mo , And its catalytic performance is better than the molecular sieve synthesized with silica sol.1HMASNMR measurement results show that the former Br¨nsted acid concentration than the latter by changing the synthesis conditions and reduce the size of HZSM 5 zeolite can improve the catalyst in the absence of methane Stability in Oxygen Dehydroaromatization