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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But kaolin is not the only clay suitable as a support for small-grained molecular sieves

Method used

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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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preparation example Construction

[0027] (1) Preparation of directing agent: Silicon source, aluminum source, templating agent, sodium hydroxide and water 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 the condition of mechanical stirring, and the stirring is continued until the raw materials are evenly mixed, then transferred to the synthetic bomb, and heated at 120-150°C under airtight conditions for 2-8 days, preferably 2-3 days , made into a guiding agent.

[0028] Said silicon source is white carbon black or silica sol; Aluminum source is sodium metaaluminate or aluminum hydroxide, preferably sodium metaaluminate; Said templating agent 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 according to (10~60) SiO 2 :Al 2 o 3 :(2~18)Na 2 O:(500~100...

Embodiment 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; hour, put the gel into a synthesis kettle, and heat it at 140°C for 2 days to prepare the 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 content is 1.956M), magnetically stirred to dissolve; ② take 6ml of guiding agent and add the above solution, and magnetically stir for 0.5 hours; ③ add 6.0g of refined sodium-based montmorillonite microspheres to step ② into the Erlenmeyer flask to obtain a gel, magnetic Stir for 0.5 h, put the gel into a synthesis kettle, and crystallize at 140° C. for 2 days.

[0046] (3) The above product was separated, washed three times with distilled water at room temperature, and then drie...

Embodiment 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 dissolve completely; ②Weigh 0.48g of NaOH and 14.4g of white carbon black into the conical flask; Hours, put the gel into a synthesis kettle and heat at 140°C for 2 days.

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

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

[0053] (3) The above product was separated, washed twice with distilled water at room temperature, and then dried at 100° C. for 6 hours to obtain a montmorillonite / β molecular sieve composite mate...

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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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