NH_4Y或HY沸石经过某种特定条件处理以后,结构稳定化,具有异常高的稳定性,人们称之为超稳 Y 沸石(Ultrastable Y Zeolite)。1967年 McDaniel 和 Maher 首先报告了这种新型物质的制备和性质,受到了普遍重视。十余年来十多个国家的科学工作者对它进行了广泛的研究。研究超稳 Y 沸石不但有助于从理论上探明沸石催化剂的催化性质与沸石结构之间的本质联系,而且有重要的实用价值。超稳 Y 沸石作 After the treatment of NH_4Y or HY zeolite under certain conditions, the structure is stabilized and has an exceptionally high stability, which is called Ultrastable Y Zeolite. In 1967 McDaniel and Maher first reported the preparation and properties of this new substance, which received universal attention. It has been extensively studied by scientists in over a dozen countries over a decade. The study of ultrastable Y zeolite not only helps to theoretically ascertain the essential relationship between the catalytic properties of zeolite catalysts and zeolite structure, but also has important practical value. Ultra-stable Y zeolite made