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Three-dimensional interconnected hierarchical-structured zeolite molecular sieve material and preparation method thereof

A zeolite molecular sieve and pore structure technology, applied in the direction of crystalline aluminosilicate zeolite, etc., can solve the problems of complex operation, inability to adjust the pore diameter of the pore, reaction conditions, and equipment requirements.

Inactive Publication Date: 2012-03-28
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the above methods have realized the effective synthesis of mesoporous zeolites, they all have the characteristics of high cost, complicated operation, and high requirements for reaction conditions and equipment.
At the same time, it is not possible to effectively adjust the pore size of the channel, and only by redesigning and synthesizing templates with different sizes and functional groups to synthesize zeolite materials with different pore sizes
This will undoubtedly greatly increase the cost and workload

Method used

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  • Three-dimensional interconnected hierarchical-structured zeolite molecular sieve material and preparation method thereof
  • Three-dimensional interconnected hierarchical-structured zeolite molecular sieve material and preparation method thereof
  • Three-dimensional interconnected hierarchical-structured zeolite molecular sieve material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Prepare PDDA and DBS into a 1wt% aqueous solution, and then prepare a solution according to the volume ratio of PDDA / DBS solution of 10:11, mix it evenly, and let it stand as a templating agent for later use.

[0028] (2) Mix 4ml of template agent with 4.0g of 50wt% TPAOH and a small amount of distilled water under vigorous stirring. After stirring for half an hour, slowly add 5g of TEOS and 0.1g of AIP (which can be dissolved in a small amount of distilled water first) into the reaction system. Then add about 10ml of distilled water.

[0029] (3) After further stirring at room temperature for 24 h, the reactants were transferred to the substrate of a hydrothermal kettle and crystallized at 150-200 °C for 2-3 days.

[0030] (4) After the product is centrifuged and washed with distilled water, it is dried in a vacuum oven at a constant temperature of 45°C, and then calcined at 550°C for 3~5h to remove the template.

[0031] (5) The product is a white solid, which...

Embodiment 2

[0033] (1) Prepare PDDA and DBS into a 1wt% aqueous solution, and then prepare a solution according to the volume ratio of PDDA / DBS solution of 10:11, mix it evenly, and let it stand as a templating agent for later use.

[0034] (2) Mix 10ml of template agent with 3.5g of 50wt% TEAOH and a small amount of distilled water under vigorous stirring. After stirring for half an hour, slowly add 4~6g of sodium silicate and 0.1g of aluminum sulfate (dissolved in a small amount of distilled water first) reaction system and add a small amount of NaOH. Add approximately 4 ml of distilled water.

[0035] (3) After further stirring at room temperature for 24 h, the reactants were transferred to the substrate of a hydrothermal kettle and crystallized at 150-200 °C for 2-3 days.

[0036] (4) After the product is centrifuged and washed with distilled water, it is dried in a vacuum oven at a constant temperature of 45°C, and then calcined at 550°C for 3~5h to remove the template.

[0037] ...

Embodiment 3

[0039] (1) Combine PDDA and AOS 16 Prepared into 1wt% aqueous solution, and then according to PDDA / AOS 16 The volume ratio of the solution is 10:7 to make a solution, mix it evenly and let it stand as a template for later use.

[0040] (2) Mix 10ml template agent with 4.0g 50wt% TPAOH and a small amount of distilled water under vigorous stirring. After stirring for half an hour, slowly add 5g TEOS and 0.2 g AIP (dissolved in a small amount of distilled water) into the reaction system slowly. Then add about 5ml of distilled water.

[0041] (3) After further stirring at room temperature for 24 h, the reactants were transferred to the substrate of a hydrothermal kettle and crystallized at 150-200 °C for 2-3 days.

[0042] (4) After the product is centrifuged and washed with distilled water, it is dried in a vacuum oven at a constant temperature of 45°C, and then calcined at 550°C for 3~5h to remove the template.

[0043] (5) The product is a white solid, which turns into a w...

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Abstract

The invention belongs to the technical field of mesoporous composite materials, and particularly relates to a three-dimensional interconnected hierarchical-structured zeolite molecular sieve material and a preparation method thereof. The method comprises the following steps of: self-assembling anionic and cationic surfactants, serving as primary constitutional units, in solution phase to form a secondary constitutional unit; self-assembling in solution to be compounded into amphipathic block copolymer; then, self-assembling in the solution by taking the amphipathic block copolymer as a template agent and by using a structural guide agent and inorganic silicon to obtain a silicon dioxide / surfactant / template agent composite material; and finally, calcining to remove the surfactant and the template agent to obtain the hierarchical-structured mesoporous zeolite molecular sieve material consisting of interconnected mesopores, micropores and macropores. The material has higher specific surface area and stronger hydrothermal stability, and has a broad application prospect in the aspects of petrochemical industry, heavy oil catalysis cracking, biological separation, adsorption and the like. The material obtained in the invention has the advantages of superior performance, simple synthesis method and readily available raw material and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of mesoporous composite materials, and in particular relates to a zeolite molecular sieve material and a preparation method thereof. Background technique [0002] Energy is the material basis for the existence and development of human society. For a country, energy is an important strategic material in international relations and plays a lifeline role in economic development. As a traditional energy source, petroleum resources have played an important role in human survival and social and economic development in the past 150 years. However, conventional crude oil is facing depletion as oil is extracted. Fortunately, nature has left another opportunity for humans-heavy oil. Heavy oil is the remaining heavy oil after gasoline and diesel oil are extracted from crude oil, which is characterized by large molecular weight and high viscosity. The resources of heavy oil in the world are huge. The original geolog...

Claims

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Application Information

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IPC IPC(8): C01B39/04
Inventor 刘畅邓勇辉赵东元
Owner FUDAN UNIV
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