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用Ga、Zn改性的HZSM-5对正己烷的芳构化性能进行了研究。在Ga改性的HZSM-5上,Ga含量存在一最佳值,此时芳烃收率和氢气收率最大。Zn改性HZSM-5后提高了芳烃收率,催化剂中Zn含量达一定值后再增加,芳烃收率变化不大;Zn含量过高,氢解反应加剧。在Ga/HZSM-5中引入Ni、Cr或Zn后提高了芳烃收率,Zn、Cr的引入显著提高了Ga/HZSM-5的脱氢功能,Ni有较强的氢解作用。
The aromatization performance of n-hexane was studied with Ga and Zn-modified HZSM-5. Ga-modified HZSM-5, there is an optimum Ga content, when the yield of aromatics and hydrogen yield maximum. Zn modified HZSM-5 increased the yield of aromatics, the content of Zn in the catalyst increased a certain value, the yield of aromatics did not change much; Zn content was too high, hydrogenolysis reaction intensified. The introduction of Ni, Cr or Zn into Ga / HZSM-5 improves the yield of aromatics. The introduction of Zn and Cr significantly improves the dehydrogenation of Ga / HZSM-5, and Ni has strong hydrogenolysis.