Preparation method of integrated NaY molecular sieve with high silica-alumina ratio

A high-silicon-aluminum ratio and molecular sieve technology is applied in the direction of crystalline aluminosilicate zeolite and octahedral crystalline aluminosilicate zeolite, etc., which can solve the problems of low utilization rate of silicon source, difficulty in purchasing, and high synthesis cost, etc., and achieve Reduce synthesis cost and post-treatment process, ensure hydrothermal stability, and improve stability
CN104211084AActive Publication Date: 2014-12-17CNOOC TIANJIN CHEM RES & DESIGN INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CNOOC TIANJIN CHEM RES & DESIGN INST
Publication Date
2014-12-17

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Abstract

The invention provides a preparation method of an integrated NaY molecular sieve with a high silica-alumina ratio. According to the method, the NaY molecular sieve is prepared by reaction of a formed reaction substrate. The method specifically comprises the following steps: preparing a NaY molecular sieve guiding agent according to a certain proportion, and stirring and aging for 4-10 hours at 20-40 DEG C; uniformly mixing and kneading materials such as a solid silicon source, metakaolin and the guiding agent and forming, filling the formed reaction substrate in a reaction kettle for crystallization, wherein the crystallization temperature is controlled at 100-150 DEG C and the crystallization time is 5-40 hours; and after reaction, filtering, washing and drying the product to obtain the NaY molecular sieve. The method which is used for synthesizing the integrated NaY molecular sieve in one step has the characteristics of high raw material utilization ratio, high product yield and the like. Moreover, the prepared integrated NaY molecular sieve is great in area and high in activity.
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Description

technical field

[0001] The invention belongs to the field of preparation of molecular sieves as inorganic catalytic carrier materials, and in particular relates to a preparation method of an integral high-silicon-aluminum ratio NaY molecular sieve. Background technique

[0002] Y zeolite has a three-dimensional unobstructed pore structure, excellent thermal and hydrothermal stability, and is widely used in petroleum refining and chemical industries, especially in catalytic cracking (FCC) reactions. At the same time, Y-type molecular sieve also shows excellent performance on the adsorption of organic volatiles.

[0003] At present, the methods for industrial production of Y-type molecular sieves basically adopt the directing agent method mentioned in USP3639099 and USP4166099 by GRACE Company of the United States, and the silicon-alumina ratio of the conventional Y-type molecular sieves produced is about 5. Y-type molecular sieves with high silicon-aluminum ratio widely used...

Claims

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