Reductive spherical cellulose adsorbent containing sulfinyl and preparation method thereof

A technology based on sulfinic acid and cellulose, applied in chemical instruments and methods, and other chemical processes, to achieve good economic and social benefits, simple production process, and low price

Active Publication Date: 2012-06-20
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention uses cheap cellulose as a raw material, uses ionic liquid as a solvent, and introduces reducing groups through graft copolymerization to prepare a reducing spherical cellulose adsorbent containing amide groups and sulfinic acid groups, which can be used in The adsorption of heavy metal ions and the removal of chlorine disinfection by-products in drinking water have practical application value, but there are no relevant reports so far.

Method used

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  • Reductive spherical cellulose adsorbent containing sulfinyl and preparation method thereof
  • Reductive spherical cellulose adsorbent containing sulfinyl and preparation method thereof
  • Reductive spherical cellulose adsorbent containing sulfinyl and preparation method thereof

Examples

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Embodiment 1

[0034] Example 1: The specific steps of this embodiment are as follows:

[0035] (1) Graft copolymerization of cellulose in ionic liquid:

[0036] The raw material components used in this embodiment are as follows (unit——kilogram):

[0037] Cellulose absorbent cotton: 0.2 kg

[0038] Ionic liquid ([BMIM]Cl): 15.0 kg

[0039] Initiator (potassium persulfate): 0.01 kg

[0040] Acrylamide compound (acrylamide): 0.5 kg

[0041] Process steps and parameters of cellulose graft copolymerization in ionic liquid: put 0.2 kg of absorbent cotton and 15.0 kg of ionic liquid ([BMIM]Cl) into the reactor, dissolve at 100°C for 4 h, and form a mass fraction of 1.32% cellulose-ionic liquid solution; cool the above solution to 50°C, add 0.01 kg potassium persulfate, react for 15 min, then add 0.5 kg acrylamide, react for 2 h; then spray the reaction solution into distilled water with a spray gun, Stir at a speed of 150 r / min to make it solidify into a ball. Take out and filter, and wash...

Embodiment 2

[0050] Example 2: The specific steps of this embodiment are as follows:

[0051] (1) Graft copolymerization of cellulose in ionic liquid:

[0052] The raw material components used in this embodiment are as follows (unit——kilogram):

[0053] Masson pine alkali pulping fiber: 6.0 kg

[0054] Ionic liquid ([AMIM]Cl): 75.0 kg

[0055] Initiator (ammonium persulfate): 1.0 kg

[0056] Acrylamide compounds (N’,N-methylenebisacrylamide): 18.0 kg

[0057] Process steps and parameters of graft copolymerization of cellulose in ionic liquid: put 6.0 kg of absorbent cotton and 75.0 kg of ionic liquid ([AMIM]Cl) into the reactor, dissolve at 90°C for 6 h, and form a mass fraction of 7.41% cellulose-ionic liquid solution; cool the above solution to 60°C, add 1.0 kg of ammonium persulfate, react for 5 min, then add 18.0 kg of N',N-methylenebisacrylamide, react for 1 h; then use a spray gun The reaction solution was sprayed into distilled water, stirred at a speed of 150 r / min at room t...

Embodiment 3

[0066] Example 3: The specific steps of this embodiment are as follows:

[0067] (1) Graft copolymerization of cellulose in ionic liquid:

[0068] The raw material components used in this embodiment are as follows (unit——kilogram):

[0069] Birch kraft fiber: 4.0 kg

[0070] Ionic liquid ([EMIM]Cl): 81.9 kg

[0071] Initiator (cobalt acetylacetonate): 0.9 kg

[0072] Acrylamide compounds (N’,N-methylenebisacrylamide): 13.2 kg

[0073] Process steps and parameters of graft copolymerization of cellulose in ionic liquid: 4.0 kg of absorbent cotton and 81.9 kg of ionic liquid ([EMIM]Cl) were put into the reactor, dissolved at 120°C for 2 h, and the resulting mass fraction was 4.66% cellulose-ionic liquid solution; cool the above solution to 40°C, add 0.9 kg of cobalt acetylacetonate, react for 20 min, then add 13.2 kg of N', N-methylenebisacrylamide, react for 3 h; then use a spray gun The reaction solution was sprayed into distilled water, stirred at a speed of 150 r / min a...

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Abstract

The invention discloses a reductive spherical cellulose adsorbent containing sulfinyl and a preparation method of the reductive spherical cellulose adsorbent. The preparation method comprises the following steps of: dissolving cellulose by using ionic liquid, then carrying out graft copolymerization and introducing a reductive group to prepare the reductive spherical cellulose adsorbent with the grain size of 4.5-5.2 mm and the specific surface area of 180-780 m2 / g. The preparation method has simplicity and no toxicity. The reductive spherical cellulose adsorbent has better reductive adsorbability and biodegradation capacity, wide source of a cellulose material and low price, thereby generating better economic and environmental benefits on the aspects of absorbing heavy metal ions and removing chlorine-disinfecting by-products of drinking water.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, in particular to a reducing spherical cellulose adsorbent containing sulfinic acid groups and a preparation method thereof. Background technique [0002] Cellulose is the most abundant and recoverable natural resource on the earth. It is cheap, degradable and does not pollute the environment. Therefore, all countries in the world attach great importance to the research and development of cellulose. Today in the 21st century, countries all over the world are paying more and more attention to the problem of environmental pollution. People pay more attention to the biodegradability and environmental coordination of cellulose, the most abundant natural polymer material on the earth, and step up the research on its functionality. Research and development is very necessary. Cellulose is a linear polysaccharide composed of many β-1,4-glucosidic bonds, which can undergo a series of chemical m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 刘明华田晨李莎吕源财
Owner FUZHOU UNIV
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