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Method for producing eight-membered oxygen ring zeolite and aei-type zeolite

A manufacturing method, technology of oxygen-ring zeolite, applied in chemical instruments and methods, separation methods, crystalline aluminosilicate zeolite, etc., can solve problems such as complicated procedures and achieve low-cost effects

Inactive Publication Date: 2018-07-31
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When phosphorus is removed by extraction, etc., the process becomes complicated

Method used

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  • Method for producing eight-membered oxygen ring zeolite and aei-type zeolite
  • Method for producing eight-membered oxygen ring zeolite and aei-type zeolite
  • Method for producing eight-membered oxygen ring zeolite and aei-type zeolite

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0076] From the viewpoint of ease of preparation of the pre-reaction mixture and production efficiency, the amount of the aluminum atom raw material (including the above-mentioned specific aluminosilicate zeolite) used is based on the amount of aluminum (Al) in the aluminum atom raw material and The molar ratio of silicon (Si) contained in the raw material mixture is usually 0.02 or more, preferably 0.04 or more, more preferably 0.06 or more, and still more preferably 0.08 or more. The upper limit of the amount of the aluminum atom raw material used is not particularly limited, but from the viewpoint of uniformly dissolving the aluminum atomic raw material in the pre-reaction mixture, the above-mentioned molar ratio is usually 2 or less, preferably 1 or less, more preferably 0.4 or less, More preferably, it is 0.2 or less.

[0077] When an aluminum atom raw material other than the above-mentioned specific aluminosilicate zeolite is used in combination as the aluminum atom raw ...

Embodiment

[0250] Hereinafter, although an Example demonstrates this invention concretely, unless the summary is exceeded, this invention is not limited to a following Example.

[0251] 〔Analysis·Evaluation〕

[0252] Analysis and performance evaluation of the zeolites obtained in the following Examples and Comparative Examples were performed by the following methods.

[0253] [Measurement of powder XRD]

[0254]

[0255] About 100 mg of a zeolite sample pulverized manually using an agate mortar was used with a sample holder of the same shape to make the sample amount constant.

[0256]

[0257] The powder XRD measurement device specifications and measurement conditions are as follows.

[0258] [Table 1]

[0259]

[0260]

[0261]

[0262] [Analysis of Cu content and zeolite composition]

[0263] The content of Si and Al in the zeolite used as a standard sample and the elemental analysis of contained copper atoms are as follows.

[0264] After dissolving the zeolite samp...

Embodiment I－1

[0279] 9.083 g of water, 8.415 g of 35% by weight tetraethylammonium hydroxide (TEAOH) (manufactured by SACHEM) and 0.412 g of NaOH (manufactured by Kishida Chemical: 97% by weight) as an organic structure-directing agent (SDA) were mixed. skeletal density 0.871 g of FAU-type aluminosilicate zeolite (silica / alumina molar ratio = 7, USY-7 manufactured by Nikke Catalyst Chemicals Co., Ltd., hereinafter referred to as "FAU-type zeolite") was used as an aluminum atom raw material, and stirred, It dissolves to make a clear solution. To this was added 5.758 g of colloidal silica "Snowtex O-40 (silica concentration: 40% by weight) manufactured by Nissan Chemical Industries, Ltd. as a silicon atom raw material, and stirred again.

[0280] Further, 0.300 g of uncalcined CHA-type zeolite (average particle diameter=0.2 μm, silica / alumina molar ratio=15) was added as a seed crystal, and stirred at room temperature for 2 hours to obtain a pre-reaction mixture.

[0281] The silica / alumin...

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Abstract

The present invention produces an eight-membered oxygen ring zeolite efficiently at low cost using an organic structure directing agent that is cheap and is industrially easily available without usingexpensive annular quaternary ammonium salt as the organic structure directing agent. The present invention is a method for producing the eight-membered oxygen ring zeolite by: mixing an aluminum atomic source material, a silicon atomic source material, an alkali metal atomic source material, an organic structure directing agent, and water; and performing hydrothermal synthesis to the obtained source material mixture. The method uses: as the aluminum atomic material, at least an aluminosilicate zeolite which includes in the framework thereof d6r which IZA defines as a composite building unit and which has a Framework density of 15T / 1000angstrom<3> or less; as the silicon atomic source material, at least the aluminosilicate zeolite and a silicon atomic source material other than this; and as the organic structure directing agent, at least quaternary ammonium salt having 5 to 11 carbon atoms per molecule.

Description

technical field [0001] The present invention relates to a manufacturing method of eight-membered oxygen-ring zeolite and a manufacturing method of AEI type zeolite. Specifically, it relates to a method for efficiently producing eight-membered oxygen-ring zeolites, especially CHA-type and AEI-type zeolites, at low cost using an inexpensive and industrially easy-to-obtain organic structure-directing agent. Background technique [0002] Zeolite has characteristics such as molecular sieve effect, ion exchange performance, catalyst performance, and adsorption performance due to the pores derived from its skeleton structure, and is widely used as an adsorption material, ion exchanger, industrial catalyst, and environmental catalyst. [0003] The pores of zeolite are classified into six-membered oxygen rings, eight-membered oxygen rings, ten-membered oxygen rings, and the like according to the number of oxygen atoms in the constituent parts. Separation of small-sized molecules suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/48B01D53/86B01D53/94B01J29/76B01J37/04B01J37/10
CPCB01J29/76B01D53/9418B01D2251/2062B01D2251/2067B01D2255/911B01D2255/9207B01D2255/50C01B39/04B01J29/763B01J37/0201B01J37/009B01J37/08B01J37/088B01J37/04B01J37/10C01B39/48B01D53/86B01D53/94B01J37/0018
Inventor 堀田悠介田中学武胁隆彦松尾武士
Owner MITSUBISHI CHEM CORP
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