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Porous magnetic carbon-based solid acid catalyst as well as preparation method and application thereof

A carbon-based solid acid and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of insufficient catalytic activity, low catalytic efficiency of solid acid catalysts, and problems between catalysts and target materials Can not fully contact and other problems, to achieve the effect of saving production steps, simple and convenient production, and simple and convenient methods

Active Publication Date: 2021-11-02
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention intends to provide a porous magnetic carbon-based solid acid catalyst to solve the problem that the above-mentioned catalyst cannot fully contact with the target treatment, resulting in low catalytic efficiency and insufficient catalytic activity of the solid acid catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of embodiment 1 porous magnetic carbon-based solid acid catalyst

[0040] ①Magnetic Fe 3 o 4 Preparation: FeCl 3 ·6H 2 O 2.0g, FeSO 4 ·7H 2 O 2.0g, NH 3 ·H 2 O 10.8g, 100ml of ethylene glycol were mixed evenly, adjusted to pH 10, and poured into a high-temperature and high-pressure reactor for reaction (the heating program was set as: heating rate 10°C / min, target temperature 220°C, retention time 20min, natural cooling to room temperature), and then through separation, washing and heat treatment (oven 105 ° C, 12h), the obtained magnetic Fe 3 o 4 , the product is ground into powder.

[0041] ② Fe 3 o 4 Powder 0.2g, activated carbon powder 10g and SiO 2 23g of the mixture A obtained by mixing 13g of the original powder, CTAB0.1g, concentrated sulfuric acid 30ml, and distilled water 100ml are mixed evenly, and then poured into a high-temperature and high-pressure reactor for reaction (the heating program is set to: heating rate 10°C / min, targe...

Embodiment 2

[0043] The preparation of embodiment 2 porous magnetic carbon-based solid acid catalysts

[0044] ①Magnetic Fe 3 o 4 Preparation: FeCl 3 ·6H 2 O 1.8g, FeSO 4 ·7H 2 O 1.9g, NH 3 ·H 2 O 9.72g, 100ml of ethylene glycol were mixed evenly, adjusted to pH 10, and poured into a high-temperature and high-pressure reactor for reaction (the heating program was set as: heating rate 10°C / min, target temperature 220°C, retention time 20min, natural cooling to room temperature), and then through separation, washing and heat treatment (oven 105 ° C, 12h), the magnetic Fe 3 o 4 , the product is ground into powder.

[0045] ② Fe 3 o 4 Powder 0.3g, activated carbon 15g and SiO 2 10g of the original powder mixed with 25g of mixture A, 0.1g of CTAB, 20ml of concentrated sulfuric acid, and 100ml of distilled water were stirred and mixed, and then poured into a high-temperature and high-pressure reactor for reaction (the heating program was set to: heating rate 10°C / min, target tempera...

Embodiment 3

[0047] The preparation of embodiment 3 porous magnetic carbon-based solid acid catalysts

[0048] ①Magnetic Fe 3 o 4 Preparation: FeCl 3 ·6H 2 O 1.9g, FeSO 4 ·7H 2 O 1.8g, NH 3 ·H 2 O 10.26g, 100ml of ethylene glycol were mixed evenly, adjusted to pH 10, and poured into a high-temperature and high-pressure reactor for reaction (the heating program was set as: heating rate 10°C / min, target temperature 220°C, retention time 20min, natural cooling to room temperature), and then through separation, washing and heat treatment (oven 110 ° C, 18h), the obtained magnetic Fe 3 o 4 , the product is ground into powder.

[0049] ② Fe 3 o 4 Powder 0.1g, activated carbon 14g and SiO 2 10g of the original powder mixed with 24g of powder, 0.15g of dodecyltrimethylammonium chloride, 30ml of concentrated sulfuric acid, 100ml of distilled water were stirred and mixed evenly, and were poured into a high-temperature and high-pressure reactor for reaction (the heating program was set to...

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Abstract

The invention relates to the technical field of solid acid catalysts, and discloses a porous magnetic carbon-based solid acid catalyst and a preparation method and an application thereof. The porous magnetic carbon-based solid catalyst comprises a magnetic carrier, the magnetic carrier comprises a magnetic core and a carbon-silicon composite layer wrapping the magnetic core, and sulfonic acid groups are distributed in pore channels of the carbon-silicon composite layer. According to the technical scheme, the porous magnetic carbon-based solid acid catalyst can be in full contact with a target treatment object, the catalytic efficiency is high, and the catalytic activity is high.

Description

technical field [0001] The invention relates to the technical field of solid acid catalysts, in particular to a porous magnetic carbon-based solid acid catalyst and its preparation method and application. Background technique [0002] At present, catalytic technology involves many fields such as petroleum smelting, pharmaceutical research and development, production of organic chemical raw materials, and environmental protection. Acid-catalyzed reactions play a pivotal role in catalytic reactions. The earliest acid catalysts were mainly liquid acids such as hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid, and inorganic salt catalysts such as aluminum trichloride, zinc chloride, and sodium sulfate. The above-mentioned traditional catalysts have many shortcomings in the industrial production process, such as continuous production difficulties in technology, difficult separation of catalysts and products, inability to recycle, corrosiveness to equipment, pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/02C02F11/10C02F101/10C02F101/16
CPCB01J27/02C02F11/10C02F2101/101C02F2101/105C02F2101/16B01J35/396B01J35/33
Inventor 齐高相谭祥国
Owner CHONGQING TECH & BUSINESS UNIV
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