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Method for preparing condensing multi-kernel aromatic resin carbon based solid acid catalyst

A carbon-based solid acid and aromatic resin technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve problems such as high price and thermal instability , to achieve the effect of low cost, good catalytic effect and wide application prospect

Inactive Publication Date: 2008-03-26
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polystyrene sulfonated cation exchange resins are thermally unstable and Nafion is too expensive for industrial use

Method used

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  • Method for preparing condensing multi-kernel aromatic resin carbon based solid acid catalyst
  • Method for preparing condensing multi-kernel aromatic resin carbon based solid acid catalyst
  • Method for preparing condensing multi-kernel aromatic resin carbon based solid acid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The first step is to prepare B-stage condensation polynuclear aromatic resin

[0028] Add: 0.1mol naphthalene, 0.5mol paraformaldehyde, 0.1g sulfuric acid to a 100mL three-neck flask equipped with electromagnetic stirring, thermometer, reflux condenser, and water separator, heat and stir, and carry out condensation reaction at 150°C for 24h to obtain Black goo.

[0029] The second step is to prepare C-stage condensation polynuclear aromatic resin

[0030] Add 0.5 g of sulfuric acid to the viscous material obtained above, heat 0.1 mol of paraformaldehyde to 250°C, and perform a curing reaction for 16 hours;

[0031] Step 3 Wash, filter and dry

[0032] Cool the C-stage condensation polynuclear aromatic resin obtained above to room temperature, add hot water at 80°C to wash, and filter until the filtrate is clear and no sulfuric acid is detected, then place the product in an oven at 120°C, Dry for 1 day.

[0033] Step 4 Sulfonation reaction and washing with water and ...

Embodiment 2-4

[0036] Except following difference, all the other are identical with embodiment 1, and the ratio consumption of paraformaldehyde is by the ratio of table 1, and the results are shown in table 1

[0037] Table 1

[0038] Example

Embodiment 5-7

[0040] Except for the following differences, all the other are the same as in Example 1, and the sulfonation reaction time is provided in Table 2 respectively.

[0041] Table 2

[0042] Example

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Abstract

The present invention discloses a preparation method of new-type condensed polynuclear aromatic resin carbon base solid acid catalyst. Said preparation method includes the following steps: using polycyclic aromatic compound or its mixture as raw material, using aldehyde compound as cross-linking agent, using inorganic strong acid as catalyst, making condensation reaction to obtain B-stage condensed polynuclear aromatic resin; adding inorganic strong acid and aldehyde compound in the B-stage condensed polynuclear aromatic resin, making continuous reaction at high temperature to obtain C-stage condensed polyunuclear aromatic resin; then making the C-stage condensed polynuclear romatic resin undergo the processes of sulfonation, washing by using water, filtering, removing sulfonating agent and drying so as to obtain the invented target product.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of a condensed polynuclear aromatic resin carbon-based solid acid catalyst. Background technique [0002] In today's crisis of energy problems and environmental problems, it is an important goal of modern chemical industry to seek to efficiently generate target products with a small amount of energy without producing unnecessary by-products. Acid catalysts are essential in the modern chemical industry and are widely used in the manufacture of various products such as pharmaceuticals, petrochemical products, and polymer products. However, most of the acid catalysts are liquid acids such as hydrochloric acid and sulfuric acid. . The liquid catalyst used in the production process is neutralized with a base, and the salt generated by the neutralization is removed to separate and recover it from the product. However, the energy consumed in the above-mentione...

Claims

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Application Information

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IPC IPC(8): B01J31/06C08G61/10
Inventor 杨建国高珊梁学正王有菲何鸣元
Owner EAST CHINA NORMAL UNIV
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