超稳Y分子筛脱铝改性的研究进展

超稳Y分子筛(USY)在石油化工催化领域应用广泛,尤其是作为加氢裂化和异构化反应的催化剂。随着工业化的发展,超稳Y分子筛逐渐满足不了催化剂的要求,达不到生产目的,而脱铝的超稳Y分子筛(DUSY)作为催化剂载体或活性组分的效果比母体USY分子筛要好,因此对脱铝改性的USY分子筛的研究引起关注。综述超稳Y分子筛的制备与脱铝改性方法的研究进展,改性方法包括水热法、化学法和水热-化学法,重点介绍化学脱铝改性对超稳Y分子筛的性质影响,展望超稳Y分子筛脱铝改性的发展方向。

Research progress in dealumination of USY zeolites

Ultrastable Y(USY) zeolite is widely applied in the field of petrochemical catalysis, especially used as the catalyst of hydrocracking and isomerization.With the development of industrialization,USY zeolite can not meet the catalyst requirement and production purpose gradually.The dealuminated ultra stable Y (DUSY) zeolite as catalyst carrier and the active component has better effect than maternal USY zeolite.Therefore,the research on DUSY zeolite has been paid attention to widely. The research progress in modification of USY zeolites including preparation and dealumination technology was introduced in this article.The modification methods had hydrothermal,chemical method and hydrothermal-chemical method.The influence of chemical modification method of dealumination on the properties of USY zeolites was mainly summarized.The development prospects of dealumination modification of USY zeolite were outlined.