Hydroxymethylation modified lignin phenolic resin adsorption microspheres and preparation method thereof

Abstract

The invention discloses hydroxymethylated modified lignin phenolic resin adsorption microspheres and a preparation method thereof. The adsorption resin microspheres are prepared from the following raw material components in parts by weight: 100 parts of phenol, 5 to 20 parts of hydroxylated activated lignin, 130 to 200 parts of formaldehyde, 750 to 900 parts of water, 2.85 to 3.30 parts of a dispersing agent, 2.0 to 2.7 parts of a catalyst and 6.5 to 11 parts of a cross-linking agent. The hydroxymethylated lignin modified phenolic resin adsorption microspheres prepared in the invention are prepared through suspension polycondensation in a water phase, so that compared with some existing reversed-phase suspension polycondensation preparation methods, the disclosed preparation method has the advantages of convenience in post-treatment of products, relatively low production cost of the products, capability of partially replacing petrochemical resource phenol with renewable resource lignin, capability of turning waste into wealth, and environmental friendliness; the product is high in adsorption capacity and has remarkable environmental and economic double benefits.

Description

technical field

[0001] The invention relates to the technical field of polymer adsorption resins, in particular to a hydroxymethylation-modified lignin phenolic resin adsorption microsphere and a preparation method thereof. Background technique

[0002] As a natural organic polymer, lignin is second only to cellulose in plants. It contains a variety of chemical bonds or functional groups, such as phenolic hydroxyl groups, carboxyl groups, alcoholic hydroxyl groups, methoxyl groups, carbonyl groups, conjugated double bonds, etc. And there are phenolic aromatic rings and non-phenolic aromatic rings, and the side chains and aromatic rings can undergo various chemical reactions such as grafting. Industrial lignin mainly comes from the paper industry and biomass refining industry. There are 50 million tons of industrial lignin produced by pulp and paper every year in the world, of which only about 10% of industrial lignin is effectively used, and most of it is used as A low-valu...

Examples

Embodiment 1

[0040] see figure 1 , a hydroxymethylated modified lignin phenolic resin adsorption microsphere The raw material components of the adsorption resin microsphere include, in parts by weight: 100 parts of phenol, 5-20 parts of hydroxylated activated lignin, 130-200 parts of formaldehyde, 750-900 parts of water, 2.85-3.30 parts of dispersant, 2.0-2.7 parts of catalyst, 6.5-11 parts of crosslinking agent.

[0041] Specifically, the lignin is one or a combination of alkali lignin, lignosulfonate, and enzymatic lignin.

[0042] Specifically, the dispersant is one or a combination of gelatin, polyvinyl alcohol or activated calcium phosphate.

[0043] Specifically, the catalyst is one or a combination of ethylenediamine, sodium hydroxide or barium hydroxide.

[0044] Specifically, the crosslinking agent is one or a combination of hexamethylenetetramine or polyoxymethylene.

[0045] Specifically, a method for preparing hydroxymethylated modified lignin phenolic resin adsorption micro...

Embodiment 2

[0054] see figure 1 A kind of hydroxymethylated modified lignin phenolic resin adsorption microspheres The raw material components of the adsorption resin microspheres include: 100 parts by weight of phenol, 5-20 parts of hydroxylated activated lignin, 130-200 parts of formaldehyde, 750-900 parts of water, 2.85-3.30 parts of dispersant, 2.0-2.7 parts of catalyst, 6.5-11 parts of crosslinking agent.

[0055] Specifically, the lignin is one or a combination of alkali lignin, lignosulfonate, and enzymatic lignin.

[0056] Specifically, the dispersant is one or a combination of gelatin, polyvinyl alcohol or activated calcium phosphate.

[0057] Specifically, the catalyst is one or a combination of ethylenediamine, sodium hydroxide or barium hydroxide.

[0058] Specifically, the crosslinking agent is one or a combination of hexamethylenetetramine or polyoxymethylene.

[0059] Specifically, a method for preparing hydroxymethylated modified lignin phenolic resin adsorption microsp...

Embodiment 3

[0068] see figure 1 A kind of hydroxymethylated modified lignin phenolic resin adsorption microspheres The raw material components of the adsorption resin microspheres include: 100 parts by weight of phenol, 5-20 parts of hydroxylated activated lignin, 130-200 parts of formaldehyde, 750-900 parts of water, 2.85-3.30 parts of dispersant, 2.0-2.7 parts of catalyst, 6.5-11 parts of crosslinking agent.

[0069] Specifically, the lignin is one or a combination of alkali lignin, lignosulfonate, and enzymatic lignin.

[0070] Specifically, the dispersant is one or a combination of gelatin, polyvinyl alcohol or activated calcium phosphate.

[0071] Specifically, the catalyst is one or a combination of ethylenediamine, sodium hydroxide or barium hydroxide.

[0072] Specifically, the crosslinking agent is one or a combination of hexamethylenetetramine or polyoxymethylene.

[0073] Specifically, a method for preparing hydroxymethylated modified lignin phenolic resin adsorption microsp...

technical field

[0001] The invention relates to the technical field of polymer adsorption resins, in particular to a hydroxymethylation-modified lignin phenolic resin adsorption microsphere and a preparation method thereof. Background technique

[0002] As a natural organic polymer, lignin is second only to cellulose in plants. It contains a variety of chemical bonds or functional groups, such as phenolic hydroxyl groups, carboxyl groups, alcoholic hydroxyl groups, methoxyl groups, carbonyl groups, conjugated double bonds, etc. And there are phenolic aromatic rings and non-phenolic aromatic rings, and the side chains and aromatic rings can undergo various chemical reactions such as grafting. Industrial lignin mainly comes from the paper industry and biomass refining industry. There are 50 million tons of industrial lignin produced by pulp and paper every year in the world, of which only about 10% of industrial lignin is effectively used, and most of it is used as A low-valu...

Examples

Embodiment 1

[0040] see figure 1 , a hydroxymethylated modified lignin phenolic resin adsorption microsphere The raw material components of the adsorption resin microsphere include, in parts by weight: 100 parts of phenol, 5-20 parts of hydroxylated activated lignin, 130-200 parts of formaldehyde, 750-900 parts of water, 2.85-3.30 parts of dispersant, 2.0-2.7 parts of catalyst, 6.5-11 parts of crosslinking agent.

[0041] Specifically, the lignin is one or a combination of alkali lignin, lignosulfonate, and enzymatic lignin.

[0042] Specifically, the dispersant is one or a combination of gelatin, polyvinyl alcohol or activated calcium phosphate.

[0043] Specifically, the catalyst is one or a combination of ethylenediamine, sodium hydroxide or barium hydroxide.

[0044] Specifically, the crosslinking agent is one or a combination of hexamethylenetetramine or polyoxymethylene.

[0045] Specifically, a method for preparing hydroxymethylated modified lignin phenolic resin adsorption micro...

Embodiment 2

[0054] see figure 1 A kind of hydroxymethylated modified lignin phenolic resin adsorption microspheres The raw material components of the adsorption resin microspheres include: 100 parts by weight of phenol, 5-20 parts of hydroxylated activated lignin, 130-200 parts of formaldehyde, 750-900 parts of water, 2.85-3.30 parts of dispersant, 2.0-2.7 parts of catalyst, 6.5-11 parts of crosslinking agent.

[0055] Specifically, the lignin is one or a combination of alkali lignin, lignosulfonate, and enzymatic lignin.

[0056] Specifically, the dispersant is one or a combination of gelatin, polyvinyl alcohol or activated calcium phosphate.

[0057] Specifically, the catalyst is one or a combination of ethylenediamine, sodium hydroxide or barium hydroxide.

[0058] Specifically, the crosslinking agent is one or a combination of hexamethylenetetramine or polyoxymethylene.

[0059] Specifically, a method for preparing hydroxymethylated modified lignin phenolic resin adsorption microsp...

Embodiment 3

[0068] see figure 1 A kind of hydroxymethylated modified lignin phenolic resin adsorption microspheres The raw material components of the adsorption resin microspheres include: 100 parts by weight of phenol, 5-20 parts of hydroxylated activated lignin, 130-200 parts of formaldehyde, 750-900 parts of water, 2.85-3.30 parts of dispersant, 2.0-2.7 parts of catalyst, 6.5-11 parts of crosslinking agent.

[0069] Specifically, the lignin is one or a combination of alkali lignin, lignosulfonate, and enzymatic lignin.

[0070] Specifically, the dispersant is one or a combination of gelatin, polyvinyl alcohol or activated calcium phosphate.

[0071] Specifically, the catalyst is one or a combination of ethylenediamine, sodium hydroxide or barium hydroxide.

[0072] Specifically, the crosslinking agent is one or a combination of hexamethylenetetramine or polyoxymethylene.

[0073] Specifically, a method for preparing hydroxymethylated modified lignin phenolic resin adsorption microsp...

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