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Phenolic organic aerogel-doped catalyst and preparation method thereof

A catalyst and airgel technology, which is applied in the field of phenolic doped organic airgel catalyst and its preparation, can solve problems such as shortage, achieve the effects of improving dispersion, expanding the scope of catalytic application, and excellent comprehensive performance

Inactive Publication Date: 2015-06-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the shortcomings of traditional catalysts in the existing gas-phase chlorination, gas-phase fluorination and other reactions, there is currently a lack of a phenolic doped organic airgel catalyst with ultra-high adsorption performance and catalytic activity

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  • Phenolic organic aerogel-doped catalyst and preparation method thereof
  • Phenolic organic aerogel-doped catalyst and preparation method thereof
  • Phenolic organic aerogel-doped catalyst and preparation method thereof

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preparation example Construction

[0034] The preparation method of phenolic type doped organic airgel catalyst of the present invention, comprises the steps:

[0035] (1) Take each material according to the ratio of the above parts by weight, dissolve phenol and aldehyde in deionized water, then add catalyst, stir to obtain a reaction solution; the mol ratio of phenol and aldehyde in the mixture of phenol and aldehyde is 1: 2.

[0036] (2) Add a doping modifier and a dispersant to the reaction solution, and stir for 5 min at a speed of 500r / min to disperse the doping modifier evenly in the reaction solution;

[0037] (3) Add the reaction solution into the insoluble oil phase at a volume ratio of about 1:50, stir at a speed of 400-2000r / min, react at 80°C, 50-100KHz ultrasonic environment for 30-60min, and finally undergo pickling, aging and Freeze-dried to prepare phenolic doped organic airgel catalyst. The insoluble oil phase is a Span SPAN / cyclohexane mixed solution, wherein the mass fraction of Span SPAN ...

Embodiment 1

[0044] Such as figure 1 as shown, figure 1 It is a 40,000 times magnified scanning electron microscope image of the microscopic morphology of the internal pore structure of the catalyst. It is the microscopic morphology of airgel pores after freeze-drying in the present invention. It can be seen from the figure that the pore structure is nanoscale, and the pore distribution range is wide, which is suitable for catalytic application.

[0045] The present invention provides a kind of phenolic doped organic airgel catalyst, described phenolic doped organic airgel catalyst comprises the following components by weight:

[0046]

[0047] Among the phenol and aldehyde, the phenol is one or a combination of resorcinol and 1,4-hydroquinone; the aldehyde is formaldehyde and furfural.

[0048] The catalyst is one or a combination of sodium carbonate, sodium hydroxide, ammonium hydroxide, calcium hydroxide and ethylamine.

[0049] The phenolic doped organic airgel catalyst is in the...

Embodiment 2

[0055] The difference between embodiment 2 and embodiment 1 is: the present invention provides a kind of phenolic doped organic airgel catalyst, and described phenolic doped organic airgel catalyst comprises the following components by weight:

[0056]

[0057] Among the phenol and aldehyde, the phenol is one or a combination of resorcinol and 1,4-hydroquinone; the aldehyde is formaldehyde and furfural.

[0058] The catalyst is one or a combination of sodium carbonate, sodium hydroxide, ammonium hydroxide, calcium hydroxide and ethylamine.

[0059] The phenolic doped organic airgel catalyst is in the form of microspheres with a particle size of 0.2 μm and an apparent density of 0.05 g / cm 3 , The specific surface area is 50m 2 / g, the pore size is 5nm.

[0060] The preparation method of phenolic type doped organic airgel catalyst of the present invention, comprises the steps:

[0061] (1) Take each material according to the ratio of the above parts by weight, dissolve phe...

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Abstract

The invention discloses a phenolic organic aerogel-doped catalyst and a preparation method thereof. The phenolic organic aerogel-doped catalyst comprises the following components in parts by weight: 5 to 15 parts of phenol and aldehyde, 80 to 90 parts of de-ionized water, 3 to 5 parts of a dispersing agent, 0.01 to 0.1 part of a catalyst and 0.01 to 0.05 part of a doping modifier. The preparation method for the phenolic organic aerogel-doped catalyst comprises the following steps: (1) weighing each substance, dissolving the phenol and the aldehyde into the de-ionized water, adding the catalyst, and performing uniform stirring; (2) adding the doping modifier and the dispersing agent into a reaction solution, and performing stirring to uniformly disperse the doping modifier into the reaction solution; (3) adding the reaction solution into an insoluble oil phase, performing stirring, and performing reaction for 30 to 60min to obtain the phenolic organic aerogel-doped catalyst. The phenolic organic aerogel-doped catalyst has higher adsorption capability, gaseous decomposition capability and high temperature resistance.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a phenolic doped organic airgel catalyst and a preparation method thereof Background technique [0002] Airgel aerogel is a nanoporous amorphous solid material, because of its outstanding characteristics such as low density, large specific surface area, high porosity and low thermal conductivity, it has a strong adsorption effect, and its high temperature environment The properties will not change without deactivation, so it can be used as a new catalyst carrier for chemical reactions, and according to the type of reaction, you can choose to dope different metal elements or their compounds to strengthen the adsorption and decomposition gas phase to increase its reaction active function. [0003] Airgel-doped catalysts load nano-dopant molecules into airgel pores to form a composite catalytic structure, which can adsorb reacting molecules between its pores, greatly increasing t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J31/26
Inventor 姚正军姚芮周金堂刘沛江左玉鑫
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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