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Preparation method and application of templating agent

A template agent and catalyst technology, applied in chemical instruments and methods, preparation of amino-substituted functional groups, molecular sieve catalysts, etc., can solve problems such as no effective preparation methods, and achieve the effect of being suitable for industrial production, low cost and simple method

Active Publication Date: 2016-02-10
南京开丽环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of preparing the molecular sieve, a template is used, and there is no effective preparation method for this template.

Method used

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  • Preparation method and application of templating agent
  • Preparation method and application of templating agent
  • Preparation method and application of templating agent

Examples

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preparation example Construction

[0053] In one embodiment of the present invention, the above-mentioned CHA-type silica-alumina molecular sieve is prepared by the following preparation method, and the method includes the following steps:

[0054] 1) Colloidal preparation: mix template agent (i.e. the template agent prepared by the method of the present invention) and alkali and water, add aluminum source and silicon source, and stir evenly between 25-45°C;

[0055] 2) Get the sol of step 1), join in the autoclave, add 0.1-5wt% weight (relative to SiO in the silicon source 2 weight) seed crystals, stirred, and crystallized at 165-190°C for 10-30 hours, wherein the stirring speed was 80-240rpm;

[0056] Wherein, the alkali is potassium hydroxide (KOH).

[0057] In the present invention, the silicon source is selected from inorganic silicon. Preferably, it is silica sol containing silica or solid silica gel for column chromatography.

[0058] In the present invention, the aluminum source is selected from one ...

Embodiment 1

[0082] Prepare R 1 -N(R 2 ) 2 Middle R 1 is adamantane, R 2 Compounds that are methyl:

[0083] Amantadine (R 1 -NH 2 , R 1 is adamantane) as the starting reactant, and in the presence of excess formic acid, it undergoes Esweiler-Clark methylation reaction with formaldehyde to synthesize N,N-dimethyladamantane tertiary amine.

[0084] This one-step reaction is a method known to those skilled in the art and will not be repeated here.

Embodiment 2

[0086] Template agent A was prepared by the following steps:

[0087] The product of Example 1 (100g, 98%, 0.64 moles) and dimethyl carbonate (230g, 98%, 2.56 moles) were reacted at 120°C for 10 hours in a 2L pressure vessel, and then cooled, and amantadine nitrogen nitrogen The carbonate of dimethyl is precipitated out from solution, filters to obtain white product 168g, yield 85% (molecular formula is C 27 h 48 N 2 o 3 , recorded as template agent A).

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Abstract

The invention relates to a preparation method and an application of a templating agent used in the preparation of an automobile tail gas purification catalyst. With the method, the templating agent can be effectively prepared with a two-step or three-step method. A total yield of the two-step or three-step reactions reaches 80%. The method is simple, and has low cost. The method is suitable for industrialized productions.

Description

technical field [0001] The invention relates to a preparation method and application of a template agent, in particular to a preparation method and application of a template agent used in the preparation of a catalyst carrier for automobile exhaust purification. Background technique [0002] Today's haze weather mainly comes from the incomplete removal of nitrogen oxides in the exhaust of diesel engines. With the rapid development of the economy, the continuous improvement of the quality of life, people's awareness of environmental protection is getting stronger and stronger, and urban residents have higher and higher requirements for air quality. Catalysts for exhaust gas purification can effectively control the emission of harmful substances and protect the ecological environment and human health. [0003] In the early days, people used two-way catalysts to remove toxic carbon monoxide and incompletely combusted hydrocarbons in automobile exhaust through redox. However, t...

Claims

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Application Information

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IPC IPC(8): C07C211/62C07C209/22C01B39/48C01B39/54B01J29/76B01J29/85
Inventor 孙红
Owner 南京开丽环保材料有限公司