Preparation method of Cu-SSZ-13 molecular sieve

A cu-ssz-13, molecular sieve technology, applied in the direction of crystalline aluminosilicate zeolite, can solve the problems of less literature, long reaction period, increase the cost of molecular sieve Cu-SSZ-13, etc., achieve high crystallinity, reduce production Cost, effect of good hydrothermal stability

Active Publication Date: 2018-09-14
山东泓泰恒瑞新材料有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, there are relatively few domestic and foreign literatures on Cu-SSZ-13 molecular sieves due to the following reasons
First of all, the template agent for preparing Cu-SSZ-13 molecular s

Method used

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  • Preparation method of Cu-SSZ-13 molecular sieve
  • Preparation method of Cu-SSZ-13 molecular sieve
  • Preparation method of Cu-SSZ-13 molecular sieve

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preparation example Construction

[0032] The present invention relates to a kind of preparation method of Cu-SSZ-13 molecular sieve, comprises the following steps:

[0033] (1) Mix aluminum source, sodium hydroxide, Cu-TEPA complex and template with deionized water, stir evenly, add silicon source, continue stirring until uniformly mixed, and obtain a mixture;

[0034] (2) crystallizing the mixture at 120-170° C. for 48-96 hours to obtain a crystallized product;

[0035] (3) drying the crystallized product at 80-120° C. for 8-12 hours to obtain a dry product;

[0036] (4) Calcining the dried product at 500-600° C. for 6-10 hours to obtain Cu-SSZ-13 molecular sieve.

[0037] Wherein, the Cu-TEPA complex is prepared by reacting copper sulfate with tetraethylenepentamine.

[0038] In one embodiment of the present invention, the aluminum source is at least one selected from sodium metaaluminate, aluminum hydroxide dry gel and pseudoboehmite.

[0039] In one embodiment of the present invention, the silicon sourc...

Embodiment 1

[0055] (1) Mix sodium metaaluminate, sodium hydroxide, Cu-TEPA complex, templating agent and organic amine accelerator with deionized water, stir evenly, add silica sol, and continue stirring until uniformly mixed to obtain a mixture. The mol ratio of each material is shown in Table 1;

[0056] (2) Crystallize the mixture at 120-170° C. for 48-96 hours to obtain a crystallized product. The crystallization parameters are shown in Table 1;

[0057] (3) drying the crystallized product at 100° C. for 10 hours to obtain a dried product;

[0058] (4) Calcining the dried product at 550° C. for 8 hours to obtain Cu-SSZ-13 molecular sieve.

[0059] Table 1

[0060]

[0061]

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Abstract

The invention provides a preparation method of a Cu-SSZ-13 molecular sieve. The method comprises the following steps: (1) mixing an aluminum source, sodium hydroxide, a Cu-TEPA complex and a templateagent with deionized water, uniformly stirring, then adding a silicon source, continuously stirring till the materials are uniformly mixed to obtain a mixture; (2) crystallizing the mixture for 48-96hours at 120-170 DEG C to obtain a crystallized product; (3) drying the crystallized product for 8-12 hours at 80-120 DEG C to obtain a dried product; and (4) roasting the dried product for 6-10 hoursat 500-600 DEG C to obtain the Cu-SSZ-13 molecular sieve. The molecular sieve has broad application prospects in the fields of the petrochemical industry, MTO reaction, exhaust purification and the industry of fine chemicals, and can be used as a catalyst for removing NOx in the automobile exhaust.

Description

technical field [0001] The invention relates to the technical field of modified catalysts, in particular to a method for preparing Cu-SSZ-13 molecular sieves. Background technique [0002] Over the past few decades, nitrogen oxides (NO x ) have caused many environmental problems, such as: acid rain and photochemical smog in cities, nitrogen oxides in motor vehicle exhaust, etc. In the United States, the European Union and Japan, a series of regulations to strictly control the exhaust emissions of nitrogen oxides have been promulgated. x content is required to be controlled at a lower level. Therefore, the development of newer and more effective exhaust gas purification technology has become a hot spot and a top priority in current research. [0003] In addition, due to the skyrocketing oil price in recent years, the technology of converting methanol into light olefins (MTO) has attracted people's attention, and the research focus is mainly on the screening and preparation...

Claims

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Application Information

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IPC IPC(8): C01B39/06C01B39/04
CPCC01B39/04C01B39/06C01P2002/72C01P2004/03C01P2004/61C01P2006/12
Inventor 张冬冬马殿民
Owner 山东泓泰恒瑞新材料有限公司
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