Preparation method of porous silicon aluminum phosphorus carrier hydrogenation catalyst and application thereof to preparation of biofuel

A technology of hydrogenation catalyst and porous structure, which is applied in the direction of biological raw materials, catalyst carriers, chemical instruments and methods, etc., can solve the problems of no template method and few reports, so as to reduce production costs, avoid environmental pollution, and be green and environmentally friendly. The effect of continuous production

Pending Publication Date: 2019-10-22
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many research methods for the synthesis of silicon-aluminum-phosphorus series porous materials, but there are few reports on the template-free method

Method used

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  • Preparation method of porous silicon aluminum phosphorus carrier hydrogenation catalyst and application thereof to preparation of biofuel
  • Preparation method of porous silicon aluminum phosphorus carrier hydrogenation catalyst and application thereof to preparation of biofuel
  • Preparation method of porous silicon aluminum phosphorus carrier hydrogenation catalyst and application thereof to preparation of biofuel

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preparation example Construction

[0039] The preparation process of silicon-aluminum-phosphorus carrier with porous structure, adding alkali source to the mixed solution of silicon source, aluminum source, phosphorus source and water for reaction, water, silicon source, aluminum source, phosphorus source and alkali source are expressed in moles of oxide The mixture is mixed at a ratio of 50-100:1:1:0.1-1:0.5-2. After crystallization, the primary product of the silicon-aluminum-phosphorus carrier with a porous structure is obtained, and then treated with an ion exchanger to obtain a silicon-aluminum-phosphorus carrier with a porous structure. Wherein, the silicon source can be one of sodium silicate, silica sol, tetraethyl orthosilicate, and white carbon black; the alkali source can be one of potassium hydroxide, sodium hydroxide, and calcium hydroxide; the phosphorus source is phosphoric acid. The ion exchanger used during ion exchange can be one of ammonium nitrate, ammonium chloride, ammonium sulfate, hydroc...

Embodiment 1

[0055] The preparation of embodiment 1. hydrodeoxygenation catalyst comprises the following steps:

[0056] (1) The preparation method of silicon-aluminum-phosphorus carrier without template method: mix 12.5g deionized water, 2.21g phosphoric acid, 1.38g pseudo-boehmite, 0.77g silica sol and 4g sodium hydroxide, and stir at 20°C 3h. Then the mixture was transferred to a high-pressure crystallization kettle lined with polytetrafluoroethylene, sealed and crystallized at 180°C for 96 hours. After the reaction was completed, the solid product was left to stand and cooled, and the solid product was centrifuged and dried to obtain the initial product. Then use an ion exchanger to ion-exchange the product, add the solid to 0.8mol / L ammonium nitrate solution, the mass ratio of liquid to solid is 15:1, fully stir at 25°C for 12h, stop stirring and then centrifuge and wash Drying is recorded as one ion exchange, and a total of 2 exchanges. The final product obtained is denoted as carr...

Embodiment 2

[0058] Embodiment 2. The preparation of hydrodeoxygenation catalyst comprises the following steps:

[0059] (1) Preparation method of silicon-aluminum-phosphorus carrier by template-free method: mix 15g of deionized water, 2.21g of phosphoric acid, 1.38g of pseudo-boehmite, 0.38g of silica sol and 4g of potassium hydroxide, and stir at 20°C for 3h . Then the mixture was transferred to a high-pressure crystallization kettle lined with polytetrafluoroethylene, sealed and crystallized at 180°C for 96 hours. After the reaction was completed, the solid product was left to stand and cooled, and the solid product was centrifuged and dried to obtain the initial product. Then use an ion exchanger to ion-exchange the product, add the solid to 0.8mol / L ammonium nitrate solution, the mass ratio of liquid to solid is 15:1, fully stir at 25°C for 12h, stop stirring and then centrifuge and wash Drying is recorded as one ion exchange, and a total of 2 exchanges. The final product obtained i...

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Abstract

The invention provides synthesis of a porous silicon aluminum phosphorus material, preparation of a catalyst and application thereof to preparation of biofuel from palm oil and other oils through hydrogenation. No amine templating agent is added during synthesis of a porous silicon aluminum phosphorus carrier, the porous silicon aluminum phosphorus carrier prepared by a template-free method can beobtained through adjustment of a silicon source and an alkali source and finding of a proper hydrothermal synthesis condition, and the obtained carrier is not required to be calcined and can be usedas a catalyst for preparation of the biofuel from the palm oil and other plant oils through hydrodeoxygenation, hydroisomerization and hydrocracking after sodium ions are removed from crystals by an ion exchange method. By the method, a synthesis technology is simple, green and pollution-free, energy-saving and environmentally friendly, the prepared catalyst has high hydrogenation activity and high stability and the biofuel yield is high.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a method for preparing a silicon-aluminum-phosphorous carrier hydrogenation catalyst with a porous structure and its application in preparing biofuels. Background technique [0002] With the development of the industrial age and the progress of social civilization, energy crisis and environmental pollution have gradually become the focus of the world. All over the world, especially in industrialized countries, a large amount of fossil energy is consumed to meet basic needs such as industrial development, urban operations, and transportation. Therefore, the exploration of renewable bio-energy is imminent, such as the use of catalysts to hydrodeoxygenate animal and vegetable oils, and the obtained long-chain alkane products are hydroisomerized to obtain high-yield biofuels. [0003] Catalytic hydrogenation of animal and vegetable oils to prepare biofuels is usually a two-step ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/182B01J32/00B01J27/19B01J27/185B01J27/188C11C3/12
CPCB01J27/182B01J27/19B01J27/1853B01J27/188C11C3/123Y02P30/20
Inventor 李伟刘思阳关庆鑫
Owner NANKAI UNIV
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