Template agent and preparation method therefor and application thereof

A technology of template agent and application, applied in the field of template agent and its preparation, can solve the problems of no effective preparation method, etc., and achieve the effect of controllable grain size, uniform distribution, and low cost

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

Method used

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  • Template agent and preparation method therefor and application thereof
  • Template agent and preparation method therefor and application thereof
  • Template agent and preparation method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0055] In one embodiment of the present invention, the above-mentioned AEI-type silicon aluminum molecular sieve is prepared by the following preparation method, and the method includes the following steps:

[0056] 1) Preparing sol: mix template and alkali and water, then add Y-type molecular sieve and silicon source, and stir evenly at 25-45℃;

[0057] 2) Take the sol of step 1) and add 0.1-5wt% by weight (relative to the SiO in the silicon source 2 (Weight) seed crystals are added to the autoclave, stirred, and crystallized at 130-200°C for 5-10 days, wherein the stirring speed is 80-240 rpm.

[0058] In the present invention, the alkali is potassium hydroxide or sodium hydroxide.

[0059] In the present invention, the silicon source is selected from inorganic silicon. Preferably, it is silica-containing silica sol or solid silica gel for column chromatography.

[0060] In the present invention, the Y-type molecular sieve is used as an aluminum source.

[0061] In the present inventi...

Example Embodiment

[0082] Preparation Example 1 (Preparation of Template A)

[0083] Prepare template A through the following steps:

[0084] Using 2,6-dimethyl-piperidine as the starting reactant, adding potassium hydroxide ethanol solution to the bromoethane ethanol solution, the reaction occurs at room temperature to produce potassium bromide precipitation, and 1-ethyl-2 , 6-Dimethyl-piperidine. Concentrate and evaporate to get the product (molecular formula is C 9 H 19 N, marked as template A).

[0085] This step of the reaction is a method known to those skilled in the art and will not be repeated here.

Example Embodiment

[0086] Preparation Example 2 (Preparation of Template B)

[0087] Prepare template B through the following steps:

[0088] The product template A (100g, 98%, 0.70 mol) of Preparation Example 1 and 500ml of toluene solution of diethyl sulfate (180g, 98%, 1.14 mol) were reacted in a 2L reflux container at 110°C for 5-6 Hours, after cooling, the salt of 1,1-diethyl-2,6-dimethyl-piperidinium monoethyl sulfate precipitated out of the solution, and the white product was filtered to obtain 175.6g with a yield of 85% (molecular formula Is C 13 H 29 NSO 4 , Marked as template B).

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Abstract

The invention discloses a template agent used in the preparation of a carrier for a catalyst for automobile exhaust gas purification and a preparation method therefor and application thereof. The template agent is particularly suitable for preparing novel AEI type silicon-aluminum molecular sieves. In addition, the template agent can be effectively prepared by the method disclosed by the invention, and the total yield of reaction reaches up to 80%; and the method is simple, is low in cost and is applicable to industrial production.

Description

technical field [0001] The invention relates to a template and its preparation method and application, in particular to a template used in the preparation of a catalyst carrier for automobile tail gas purification, its preparation method and application. 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, the exhau...

Claims

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Application Information

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IPC IPC(8): C07D211/14C07C305/06C07C303/24C07C69/96C07C68/06C01B39/04B01J32/00B01J29/76B01D53/56B01D53/94
Inventor 孙红
Owner 南京开丽环保材料有限公司
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