摘要
本文考察了不同温度焙烧ＨＺＳＭ—５５分子筛吸附苯后的ＥＰＲ信号是随着焙烧温度升高而增加．分子筛Ｂ酸向Ｌ酸中心转化，在６００—７００℃温度区域内有一个突变．本文还讨论了焙烧温度对邻二甲苯异构化的催化活性的影响．
Studied for the cajcinated (under different temperatUre of 550℃ 600℃ 650℃and 700℃) HZSM-- 35 samples Show that the observed EPR signal after adsorption benzene increases with the calcinatory temperatUre. It is obvious that the dehydroxylation of HZSM-- 35 zeolite transiforms Bronsted acids into kiwis acides. A sharp change in the temperature range of 600--700℃ has been observed. The influence of the calcination temperature on the catalytic activity of zeolite for the reaction of O--X ylene isomerhation was inveStdeted.
出处
《湖北科技学院学报》
1994年第4期23-27,共5页
Journal of Hubei University of Science and Technology
