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Synthetic method for ZSM-5/mordenite mixed crystal material

A technology of mordenite and synthesis method, applied in the directions of mordenite crystalline aluminosilicate zeolite, chemical instruments and methods, crystalline aluminosilicate zeolite, etc., to achieve the effect of low synthesis cost

Inactive Publication Date: 2005-01-19
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] So far there is no report on the method of synthesizing ZSM-5 molecular sieve / mordenite mixed crystal material

Method used

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  • Synthetic method for ZSM-5/mordenite mixed crystal material
  • Synthetic method for ZSM-5/mordenite mixed crystal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Raw materials: 4.8g aluminum sulfate

[0054] 25.1g water glass

[0055] 21.5g H 2 o

[0056] 0.8g sodium hydroxide

[0057] Experimental process: Mix water glass and water evenly, then add aluminum sulfate under mechanical stirring to form a gel, continue stirring until uniform, then add sodium hydroxide, and the resulting mordenite reaction system has a ratio of 2.3Na 2 O:Al 2 o 3 : 13SiO 2 : 320H 2 O, after stirring evenly, add 0.5 g of the ZSM-5 zeolite seed crystal synthesized in Comparative Example 2, continue to stir until uniform, then move into the reaction kettle, and crystallize at 170 ° C for 64 hours, cool rapidly after crystallization, filter and wash, and then Place in an oven and dry at 100-110°C for 3-4 hours to obtain the raw powder of the mixed crystal material, coded as A1.

Embodiment 2

[0059] Raw materials: 4.8g aluminum sulfate

[0060] 25.1g water glass

[0061] 21.5g H 2 o

[0062] 0.8g sodium hydroxide

[0063] Experimental process: Mix water glass and water evenly, then add aluminum sulfate under mechanical stirring to form a gel, continue stirring until uniform, then add sodium hydroxide, the resulting mordenite reaction system has a ratio of 2.3Na 2 O:Al 2 o 3 : 13SiO 2 : 320H 2 O, after stirring evenly, add 1.5 g of ZSM-5 zeolite seed crystals synthesized in Comparative Example 2, continue to stir until uniform, then move into the reaction kettle, and crystallize at 170° C. for 64 hours, cool rapidly after crystallization, filter and wash, and then Put it in an oven and dry at 100-110°C for 3-4 hours to obtain the raw powder of the mixed crystal material, coded as A2.

Embodiment 3

[0065] Raw materials: 4.8g aluminum sulfate

[0066] 25.1g water glass

[0067] 21.5g H 2 o

[0068] 0.8g sodium hydroxide

[0069] Experimental process: Mix water glass and water evenly, then add aluminum sulfate under mechanical stirring to form a gel, continue stirring until uniform, then add sodium hydroxide, the resulting mordenite reaction system has a ratio of 2.3Na 2 O:Al 2 o 3 : 13SiO 2 : 320H 2 O, after stirring evenly, add 2.5 g of ZSM-5 zeolite seed crystals synthesized in Comparative Example 2, continue to stir until uniform, then move into the reaction kettle, and crystallize at 170 ° C for 64 hours, cool rapidly after crystallization, filter and wash, and then Place in an oven and dry at 100-110°C for 3-4 hours to obtain the raw powder of the mixed crystal material, coded as A3.

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Abstract

The invention discloses a synthetic method for ZSM-5 / mordenite mixed crystal material, wherein ZSM-5 molecular sieve is charged into the synthesized reaction mixture of mordenite as seed crystal, and said material is prepared through water thermal crystallization. The invention realizes low making cost and more ideal catalyzing performance.

Description

technical field [0001] The invention relates to a synthesis method of a mixed crystal material, more specifically, the invention relates to a synthesis method of a ZSM-5 / mordenite mixed crystal material. Background technique [0002] With the continuous improvement of the quality requirements of chemical products, higher requirements are put forward for the catalytic performance of zeolite catalytic materials. People's exploration of single-structure zeolites has reached a certain depth. In order to improve the performance of zeolite catalytic materials and make them more suitable for industrial applications, it is a new way to explore mixed-crystal catalytic materials with multiple structure types. [0003] In oil refining and petrochemical industries, ZSM-5 molecular sieve and mordenite are two widely used catalytic materials, which have many unique advantages and insurmountable disadvantages. For example, the special pore structure and excellent thermal and hydrothermal ...

Claims

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Application Information

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IPC IPC(8): B01J29/18B01J29/40B01J29/70C01B39/26C01B39/38C01B39/46
Inventor 宗保宁赵天波李凤艳马忠林张慧英
Owner CHINA PETROLEUM & CHEM CORP
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