Effects of Zeolite Structure on the Catalytic Performance of Catalysts for Methane Non-oxidative Aromatization

Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (12): 2005.

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Effects of Zeolite Structure on the Catalytic Performance of Catalysts for Methane Non-oxidative Aromatization

LI Shuang¹, ZHANG Chun-Lei¹, YUAN Yi², PENG Yan-Bing², WU Tong-Hao¹, ZHANG Mi-Lin³, LIN Li-Wu³

1. Department of Chemistry, Jilin University, Chang chun, 130023;
2. Department of Chemical Engineering, Haerbin Engineering College, Haerbin, 150001;
3. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023

Received:1997-12-10 Online:1998-12-24 Published:1998-12-24

Abstract

Abstract: The catalytic performance for methane aromatization in the absence of oxygen over various supported zeolite catalysts was studied on a continuous flow fixed bed reactor. It is found that H-form silica-alumina zeolites with two dimensional space structure, such as ZSM-5, ZSM-8 and ZSM-11 whose pore size is very near to the dynamic diameter of benzene (06 nm), are fine supports for methane aromatization, among which 3%MoO₃/HZSM-11 possesed the highest activity and stability, the maximum conversion of methane and selectivity to benzene are 8.0% and 90.9% respectively. The catalytic performance of MoO₃/HZSM-8 and 3%MoO₃/H-β are relatively lower than that of 3%MoO₃/ HZSM-5. The catalysts supported on HMCM-41 and HSAPO-34 have a very low activity for the reaction and over the catalysts of MoO₃/HMOR, HX and HY only a small amount of ethylene is produced, while hydrocarbons have not been detected over the catalysts of MoO₃/HSAPO-5 and MoO₃/HSAPO-11.

Key words: Zeolite structure, Methane aromatization, MoO₃, Benzene, Shape selective function

CLC Number:

O643.1

TrendMD:

LI Shuang, ZHANG Chun-Lei, YUAN Yi, PENG Yan-Bing, WU Tong-Hao, ZHANG Mi-Lin, LIN Li-Wu. Effects of Zeolite Structure on the Catalytic Performance of Catalysts for Methane Non-oxidative Aromatization[J]. Chem. J. Chinese Universities, 1998, 19(12): 2005.

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Effects of Zeolite Structure on the Catalytic Performance of Catalysts for Methane Non-oxidative Aromatization

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