Montmorillonite/beta molecular sieve composite material and preparation thereof

A technology of beta molecular sieve and composite material is applied in the field of montmorillonite/beta molecular sieve composite material and its preparation, and achieves the effects of simple process, wide source and simple preparation process

Active Publication Date: 2008-08-13
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Montmorillonite/beta molecular sieve composite material and preparation thereof
  • Montmorillonite/beta molecular sieve composite material and preparation thereof
  • Montmorillonite/beta molecular sieve composite material and preparation thereof

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[0027] (1) Preparation of directing agent: silicon source, aluminum source, template agent, sodium hydroxide and water were prepared according to (60-90) SiO 2 : Al 2 O 3 : (8~14)R: (1~4)Na 2 O: (600~1000)H 2 The molar ratio of O is mixed at room temperature and under mechanical stirring conditions, and the stirring is continued until the raw materials are evenly mixed, then transferred to the synthetic bomb, and heated at 120 to 150 ° C under airtight conditions for 2 to 8 days, preferably 2 to 3 days. , to make a guide agent.

[0028] Said silicon source is white carbon black or silica sol; aluminium source is sodium metaaluminate or aluminium hydroxide, preferably sodium metaaluminate; said template R is tetraethylammonium hydroxide (TEAOH) or Tetraethylammonium bromide, preferably tetraethylammonium hydroxide.

[0029] (2) Preparation of molecular sieve gel: silicon source, aluminum source, sodium hydroxide and water were prepared according to (10-60) SiO 2 : Al 2 O...

Example Embodiment

[0041] Example 1

[0042] (1) Preparation of directing agent:

[0043] ①Weigh 0.9g of sodium aluminate into a 250ml conical flask, add 60ml of 25% TEAOH, and magnetically stir to dissolve completely; ②Weigh 0.48g of NaOH and 14.4g of white carbon black into the conical flask, and stir with magnetic stirring for 0.5 hours, the gel was charged into a synthesis kettle and heated at 140 °C for 2 days to prepare a directing agent.

[0044] (2) Preparation of montmorillonite / β molecular sieve composite material:

[0045] ① Dissolve 1.1g of sodium aluminate in 100ml of distilled water, add 4.56g of NaOH, and then add 102ml of silica sol (SiO 2 The content is 1.956M), dissolved by magnetic stirring; 2. get 6ml of the guiding agent and add to the above solution, and magnetically stir for 0.5 hours; 3. add 6.0 g of refined sodium-based montmorillonite microspheres to step 2. in the conical flask to obtain gel, magnetic After stirring for 0.5 h, the gel was put into a synthesis kettle...

Example Embodiment

[0048] Example 2

[0049] (1) Preparation of directing agent:

[0050] ①Weigh 0.9g of sodium aluminate into a 250ml conical flask, add 60ml of 25% TEAOH, and magnetically stir to completely dissolve; ②Weigh 0.48g NaOH and 14.4g white carbon black into the conical flask; ③Magnetically stir 0.5 hours, the gel was charged into a synthesis kettle and heated at 140 °C for 2 days.

[0051] (2) Preparation of montmorillonite / β molecular sieve composite material:

[0052] ①Weigh 4.56g of NaOH, dissolve it in 20ml of water, add 1.1g of sodium aluminate, and then add 132ml of silica sol (SiO 2 The content is 1.956M), dissolved by magnetic stirring; 2. get 6 mL of guiding agent and add to the above solution, and magnetically stir for 0.5 hours; 3. add 3.0 g of natural sodium-based montmorillonite microspheres into step 2. conical flask to obtain gel, magnetic After stirring and mixing, the gel was put into a synthesis kettle and crystallized at 140 °C for 4 days.

[0053] (3) The abo...

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Abstract

The present invention provides a montmorillonite/beta molecular sieve composite material and its preparing method. The montmorillonite/beta molecular sieve composite material is prepared by evenly mixing montmorillonite with beta molecular sieve gelatin, then processing home position crystallization, and via filtering, washing and drying. The composite material have structure characteristics of the montmorillonite and the molecular sieve at the same time, the montmorillonite and the molecular sieve are alternative. The synthetic montmorillonite/beta molecular sieve have characteristics of small crystal grain molecular sieve by controlling the synthetic course and the conditions. The preparing method is simple, the easily separating, the molecular sieve composite material has better water-heat stability. The composite material are mainly used for all kinds of catalysts and absorption agents, especially the preparing of hydrogenation catalyst.

Description

technical field [0001] The invention relates to a novel catalytic material and a preparation method thereof, in particular to a montmorillonite / beta molecular sieve composite material and a preparation method thereof. Background technique [0002] β molecular sieve has good thermal and hydrothermal stability, moderate acidity and acid stability, and hydrophobicity. It is not easy to coke and has a long service life in catalytic reactions. Due to its unique topological structure, good thermal stability and wear resistance, β molecular sieve has been used as a very effective catalyst active component in hydrocracking, isomerization, alkylation, cracking, dewaxing It is widely used in petroleum refining and chemical process. It has good coking resistance and excellent performance in adsorption, and has rapidly developed into a new type of catalytic material in recent years. [0003] People such as Camblor (Micopor.Mesopor.Mater.25 (18) (1998) 57-59) take white carbon black as...

Claims

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Application Information

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IPC IPC(8): B01J29/06B01J21/16
Inventor 张志智孙万付凌凤香张喜文王少军赵荣林方向晨
Owner CHINA PETROLEUM & CHEM CORP
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