Abstract
A novel route to obtain the high para-selectivity was developed by conversion of anisole on modified ZSM-5 in a continuous flowing fixed-bed reactor. It showed that the silylation and steaming treatment were significantly benificial to enhance the para-selectivity. Compared with the parent catalysts, the para-selectivity was sharply increased from 18.13% to 69.21% after the second silylation, which was further increased to 80.67% by steaming treatment, The acid sites with different strength of catalysts were studied by NH3-TPD which had an influence on both the para-selectivity and the amount of aromatics in the products. (C) 2013 Elsevier Inc. All rights reserved.