Resorcinol formaldehyde resin base solid acid and preparation method and application thereof

A technology of resorcinol formaldehyde resin and resorcinol, which is applied in the preparation of carboxylic acid esters, dehydration of hydroxyl-containing compounds to prepare ethers, ether preparations, etc., can solve problems such as unsatisfactory, and achieve high thermal stability and acid value High, good catalytic effect

Inactive Publication Date: 2011-05-25
SHAOXING UNIVERSITY
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the inorganic system, zirconia (ZrO 2 ) is treated with sulfuric acid, and the obtained sulfuric acid trace (sulfuric acid trace) zirconia is a solid acid catalyst with the strongest acidity, but there are not many traces of sulfuric acid on the surface, and the number of acid points per unit weight is higher than that of liquid acid Much less, so far from meeting the above requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Resorcinol formaldehyde resin base solid acid and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the preparation of resorcinol formaldehyde resin base solid acid

[0023] (1), the synthetic reaction of carbon-based solid acid:

[0024] Add 0.01mol of resorcinol, 0.001mol of isethionic acid, and 15g of water into the Erlenmeyer flask, stir and mix, and turn into a transparent solution, add 0.02mol of formaldehyde solution dropwise under stirring conditions, and immediately after the dropwise addition is complete After condensation in an oven at 85°C for 72 hours, a red solid was obtained, which was rotary evaporated to dryness to obtain a resin containing isethionic acid. Put the synthesized resin in a quartz tube, and carry out carbonization and condensation reaction at 250°C for 10 hours under nitrogen to obtain a black solid;

[0025] (2), washing, suction filtration and drying:

[0026] After the black solid prepared above is cooled to room temperature, add hot water above 80°C for washing, and filter until the filtrate is clear and acidic, and t...

Embodiment 2-4

[0028] The preparation method is the same as that of Example 1, except that the carbonization condensation reaction time is changed as shown in Table 1.

[0029] Table 1: Catalyst performance comparison under different carbonization condensation reaction times

[0030] Example

Embodiment 5-7

[0032] The preparation method is the same as that in Example 1, except that the amount of isethionic acid is changed as shown in Table 2.

[0033] Table 2: Catalyst performance comparison at different dosages of isethionic acid

[0034]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thermal decomposition temperatureaaaaaaaaaa
thermal decomposition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a resorcinol formaldehyde resin base solid acid and a preparation method and application thereof, belonging to the technical field of chemical synthesis. The invention is characterized in that the preparation method comprises the following steps: by using resorcinol as a raw material, a formaldehyde solution (the mol ratio of the raw material to the formaldehyde solution is (1:1)-(1:3)) as a crosslinking agent and hydroxy-ethyl sulfonic acid (the mol ratio of the raw material to the hydroxy-ethyl sulfonic acid is (1:0.1)-(1:1)) as an active molecule, adding water (the mass ratio of the resorcinol to the water is 1:5-1:20) to prepare a solution; carrying out condensation reaction at 65-95 DEG C for 60-120 hours, and drying by rotary evaporation to obtain the RF (resorcinol formaldehyde) resin; then, carrying out carbonization condensation reaction at 180-300 DEG C for 2-32 hours; and after the reaction, washing with hot water at the temperature higher than 80 DEG C, filtering to remove free acidic materials, and drying the product in a baking oven at 120 DEG C to obtain the resorcinol formaldehyde resin base solid acid. The resorcinol formaldehyde resin base solid acid disclosed by the invention has the advantages of high thermal stability, high acid value, favorable catalysis effect and the like, and can be repeatedly used.

Description

Technical field: [0001] The present invention relates to resorcinol-formaldehyde resin-based solid acid insoluble in polar solvent obtained by first condensing resorcinol, formaldehyde and isethionic acid into resin, and then carbonizing under high-temperature nitrogen conditions and the above-mentioned Use of solid acid as solid acid catalyst. Background technique: [0002] In today's crisis of energy problems and environmental problems, it has become the goal of modern chemical industry to efficiently generate target products with a small amount of energy without producing unnecessary by-products. Acid catalysts are indispensable 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 currently used liquid acid catalysts are hydrochloric acid and sulfuric acid. . The liquid catalyst used in the production process needs to be neutralized by alkali...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/36C08G8/32C08G8/22B01J31/06C07C67/08C07C69/704C07D317/72C07C37/16C07C39/08C07C41/09C07C43/20
Inventor 梁学正
Owner SHAOXING UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap