钴离子交换H型及Na型ZSM-5的表征及乙烷氨氧化反应性能

Abstract

Abstract: Various Co-HZSM-5 and Co-NaZSM-5 zeolites, prepared by means of liquid-phase ion-exchange method, were characterized by means of NH₃-TPD, IR, UV-Vis and H₂-TPR for studying the relationship between the acid-base or redox properties and the catalytic ammoxidation performance of ethane. For both types of Na- and H-ZSM-5, the introduction of Co²⁺ cations results in the formation of two new types of Lewis acid sites. The presence of co-cations (i.e. H⁺ and Na⁺) has a great effect on the redox properties of Co²⁺ ions, thus influencing the catalytic activity and selectivity for the reaction of ethane ammoxidation.

Key words: Co-ZSM-5, characterization, ethane, ammoxidation

CLC Number:

O643

PAN Wei-cheng, HUANG Qing-yu, LIAN Hong-lei, JIA Ming-jun, ZHANG Wen-xiang. Characterization and Ethane Ammoxidation Property of Cobalt Ion-exchanged H-and Na-Form ZSM-5 Zeolites[J].J4, 2005, 43(06): 830-834.

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Characterization and Ethane Ammoxidation Property of Cobalt Ion-exchanged H-and Na-Form ZSM-5 Zeolites

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