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发明公开
CN107758684A 一种高介孔量Y型沸石及其制备方法 有权

一种高介孔量Y型沸石及其制备方法
摘要：
本发明提供了一种高介孔量Y型沸石的制备方法，其包括以下步骤：将Y型沸石在50-120℃下进行铵离子交换处理，得到NH4Y沸石；将NH4Y沸石加入到浓度为0.1-1M的缓冲溶液中打浆，得到浆液；在20-120℃向所述浆液中缓慢滴加浓度为0.01-1M的氟硅酸铵溶液，滴加完成后在20-120℃下搅拌0.1-5h，得到粗产品；对粗产品直接进行碱处理或者经过洗涤、干燥之后再进行碱处理，其中，所述碱处理是以浓度为0.01-3.0M的碱性溶液在30-120℃下对粗产品处理0.1-5h，碱性溶液与粗产品的质量比为1-50:1，优选5-40:1；对碱处理后的粗产品在50-120℃进行铵离子交换，再经过300-800℃焙烧1-8h、洗涤、干燥，得到所述高介孔量Y型沸石。
摘要（英）：

The invention provides a preparation method of high-mesopore-amount Y type zeolite. The preparation method comprises: carrying out ammonium ion exchange treatment on Y type zeolite at a temperature of50-120 DEG C to obtain NH4Y zeolite; adding the NH4Y zeolite to a buffer solution with a concentration of 0.1-1 M, and beating to a slurry; slowly adding an ammonium fluorosilicate solution with a concentration of 0.01-1 M to the slurry in a dropwise manner, and stirring for 0.1-5 h at a temperature of 20-120 DEG C to obtain a crude product; directly carrying out alkali treatment on the crude product or carrying out alkali treatment after washing and drying, wherein the crude product is treated for 0.1-5 h at a temperature of 30-120 DEG C with an alkaline solution with a concentration of 0.01-3.0 M, and a mass ratio of the alkaline solution to the crude product is 1-50:1, preferably 5-40:1; and carrying out ammonium ion exchange on the obtained crude product at a temperature of 50-120 DEGC, calcining for 1-8 h at a temperature of 300-800 DEG C, washing, and drying to obtain the high-mesopore-amount Y type zeolite.

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