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发明公开
CN104843736A 一种硅铝比高且二级孔丰富的Y分子筛及其制备方法 无效 - 驳回

一种硅铝比高且二级孔丰富的Y分子筛及其制备方法
摘要：
本发明提供了一种硅铝比高且二级孔丰富的Y分子筛及其制备方法。该方法包括：将Y型沸石在300℃-600℃处理1-5h，得到干燥的Y型沸石，以SiO2和Al2O3计，Y型沸石的硅铝摩尔比为3-6：1；降温至200-600℃；在无水干燥环境中，向干燥的Y型沸石中通入被脱铝补硅剂饱和的干燥气体，反应0.5h-7h，或在无水干燥环境中，将温度匀速升温至500-700℃的同时向干燥的Y型沸石中通入被脱铝补硅剂饱和的干燥气体，反应0.5h-7h，得到粗产品；将粗产品在30-100℃下碱处理10min-5h，碱处理的固液质量比为1-50：1，得到硅铝比高且二级孔丰富的Y分子筛。本发明还提供了由上述方法得的硅铝比高且二级孔丰富的Y分子筛，其具有高的硅铝摩尔比和丰富的二级孔结构。
摘要（英）：

The invention provides a Y molecular sieve high in silica alumina ratio and abundant in secondary holes and a preparation method therefor. The preparation method comprises steps of: Y-type zeolite is processed for 1-5 hours at 300-600 DEG C to obtain dry Y-type zeolite, and calculated by SiO2 and Al2O3, the silica alumina mole ratio of the Y-type zeolite is (3-6):1;the temperature is lowered to 200-600 DEG C;in a waterless dry environment, dry air saturated by a dealuminated siliceous reinforcing agent is introduced to the dry Y-type zeolite to react for 0.5h-7h, or in a waterless dry environment, the temperature is raised to 500-700 DEG C at a constant speed, at the same time, the dry air saturated by a dealuminated siliceous reinforcing agent is introduced to the dry Y-type zeolite to react for 0.5h-7h, and a rough product is obtained; the rough product is subjected to alkali treatment for 10min-5h at 30-100 DEG C, solid-liquid mass ratio for the alkali treatment is (1-50):1, and a Y molecule sieve high in silica alumina ratio and abundant in secondary holes is obtained. The invention further provides the Y molecule sieve high in the silica alumina ratio and abundant in secondary holes, obtained by adopting the preparation method and has high silica aluminum ratio and abundant secondary hole structures.

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