Study on the Performance of Methane Aromatization of Ni Modification of Mo/HZSM-5 Catalyst

Abstract

Abstract: The effects of conversion of CH₄ over Mo-Ni/HZSM-5 catalysts under a non-oxidizing condition with different temperatures,different conditions of pretreatment and different loadings of Ni were investigated.The results indicate that when Ni/Mo molar ratio is 0.05,the conversion of CH₄ at 973 Kcan reach 11.3%,and the selectivity of aromatic hydrocarbon can reach 97.1% It′s shown that adding a certain quantity of Ni is beneficial to the conversion of CH₄,the maximun conversion of CH₄ at 1023 Kcan reach 15.9%.The effect of reaction with pretreatment by using N2 is better than that in the cases of H₂,CH₄ or air.The results of NH₃-TPD-MSshow that the centre numberes of strong acidity and weak acidity both on the Mo-Ni/HZSM-5 catalysts are more than that on the Mo/HZSM-5 catalyst.This might be one of the reasons that the activity of methane aromatization is increased over Mo-Ni/HZSM-5 catalyst.

Key words: Mathane, Mo-Ni/HZSM-5 catalyst, Aromatization, Aromatic hydrocarbon

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WANG Dong-Jie, ZHANG Yi-Ping, FEI Jin-Hua, ZHANG Xiao-Ming. Study on the Performance of Methane Aromatization of Ni Modification of Mo/HZSM-5 Catalyst[J]. Chem. J. Chinese Universities, 1996, 17(11): 1776.

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Study on the Performance of Methane Aromatization of Ni Modification of Mo/HZSM-5 Catalyst

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