On-line Quantitative Analysis and Evaluation of Catalytic Activity for Products of Ethanol Aromatization on Zeolite Molecular Sieve

A fast,stable and relatively high accurate on-line quantitative analytical method was developed for the main products of catalytic reaction.The effect of Cu loading,reaction temperature and space velocity on the catalytic performance of ethanol aromatization without using oxidants over the molecular sieve Cu/HZSM-5 has been studied.The investigation results indicated that 5%Cu/HZSM-5 reacted at 300℃showed the best aromatization activity among the tested catalysts,the ethanol conversion being 35.41%and the selectivity to aromatics being 27.59%.The experimental results obtained from the variation of the generating capacity of ethylene at different reaction temperature show that ethylene is an initial product.