摘要
程序升温热脱附法测定了ＨＺＳＭ—５分子筛的程脱谱有两个峰．峰Ⅰ和峰Ⅱ的几分别为４８８Ｋ和７２３Ｋ．用２，６－二甲基吡啶作为选择性吸附质测定了峰Ⅰ和峰Ⅱ的酸性质，显示Ｂ酸作为苯烃化的活性位，并测定了结焦量对表面酸性质的影响，结果表明，随结焦量的增加，峰Ⅰ、峰Ⅱ面积随之减小．酸的恢复与再生条件有关．
The accity over HZSM-5 zeolite catalyst has been studied by tempreture programed desorption (TPD) The types and propeds of po Ⅰ (488K) and peak Ⅱ (723K) of TPD spectrum have have been detected by of 2,6-dimthylpyridin. The relation between acidity and coking amount, and conditions of regeneration have been also reasearched. It has been showed that the higher the amount of coke on HZSM-5 is, the smaller the are of TPD spectrum is. The oxygen concentration rise in regeneration process strongly affecting recoering of acidity.
出处
《石油化工高等学校学报》
CAS
1995年第2期16-20,共5页
Journal of Petrochemical Universities
