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Method for preparing dahurian larch-based resin carbon aerogel microspheres

A technology of carbon airgel and larch, which is applied in the direction of climate sustainability, sustainable manufacturing/processing, chemical industry, etc., can solve the problems of low production efficiency and long time consumption, and achieve high utilization rate and low raw material cost Effect

Inactive Publication Date: 2015-03-04
NORTHEAST FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The raw materials are environmentally friendly and the process is simple, but this method takes a long time and the production efficiency is low

Method used

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  • Method for preparing dahurian larch-based resin carbon aerogel microspheres

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Experimental program
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Effect test

Embodiment 1

[0028] Take 10.0g of larch sawdust, 30.0g of phenol, 1.0mL of concentrated sulfuric acid (98%), and 2.0mL of phosphoric acid (85%) at 110°C for 2 hours of reflux reaction. After cooling to room temperature, add 80mL of methanol, stir well, filter and wash, and collect filtrate. Neutralize the filtrate to neutral with sodium hydroxide, filter to remove insoluble matter such as salt, collect the filtrate and distill methanol under reduced pressure at 40°C to obtain brown larch liquefaction. Add 90mL formaldehyde solution (37%), 3.0g NaOH, 10.0g P123 to the flask successively, react at 40°C for 20h, then add 10mL concentrated hydrochloric acid, adjust the pH to 0.5, continue the reaction for 8h, cool to room temperature after the reaction, and wash Dry in an oven at 100°C to obtain a larch-based resin interphase.

[0029] Using the self-developed sprayer combined with the calcination furnace, through the spray pyrolysis method, it can be formed into light larch liquefied microsp...

Embodiment 2

[0031] Take 10.0g of larch sawdust, 30.0g of phenol, 2.0mL of concentrated sulfuric acid (98%), and 2.0mL of phosphoric acid (85%) at 120°C for 2 hours of reflux reaction. After cooling to room temperature, add 100mL of methanol, stir well, filter and wash, and collect filtrate. Neutralize the filtrate to neutral with sodium hydroxide, filter to remove insoluble matter such as salt, collect the filtrate and distill methanol under reduced pressure at 40°C to obtain brown larch liquefaction. Add 90mL formaldehyde solution (37%), 3.0g NaOH, 10.0g P123 to the flask successively, react at 40°C for 20h, then add 10mL concentrated hydrochloric acid, adjust the pH to 0.5, continue the reaction for 8h, cool to room temperature after the reaction, and wash Dry in an oven at 100°C to obtain a larch-based resin interphase.

[0032]Using the self-developed sprayer combined with the calcination furnace, through the spray pyrolysis method, it can be formed into light larch liquefied microsp...

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Abstract

The invention discloses a method for preparing dahurian larch-based resin carbon aerogel microspheres. The method is characterized by comprising the following steps: with dahurian larch chips as raw material and phenol as a liquefying agent, liquefying in an acid condition, and dissolving, neutralizing and filtering to obtain a dahurian larch liquefied product; reacting with a formaldehyde solution in an alkaline condition to generate stable thermosetting resin; pouring dahurian larch-based resin into a spray pyrolysis apparatus, forming light dahurian larch liquefied product resin microspheres by a spray calcination one-step method; and carbonizing to obtain carbon aerogel microspheres under the promoting and protecting conditions of nitrogen. The operation process has the main characteristics that due to adoption of biomass dahurian larch as the raw material, the raw material is abundant; resources are reutilized, and energy conservation and consumption reduction are achieved; the dahurian larch chips are decomposed by adopting a liquefaction method; the internal structure is relatively easy to regulate and control; a stable resin structure is generated by resin reaction and the reaction is simple and controllable; the dahurian larch-based resin carbon aerogel microspheres are prepared by using the independently developed spray calcination one-step method; the method has the advantages of low pollution, small time consumption and high yield, and can be effectively applied to preparation of capacitance carbon; and the application field of the carbon material is expanded.

Description

Technical field: [0001] The invention relates to the field of biochar materials, in particular to a preparation method of larch-based resin carbon airgel microspheres. Background technique: [0002] The preparation of carbon materials has been deeply developed, but the preparation of new carbons with ideal morphology, pore size and tunable pore structure has become the focus of attention. So far, many carbon materials with irregular shapes and disordered pore structures have been reported, and in fact these materials greatly limit the practicality of carbon materials. In order to broaden the application of carbon materials in adsorption separation, drug delivery, gas selection and capacitive batteries, it is of great research value to prepare carbon materials with regular morphology and regular pore structure. [0003] As a form of carbon spheres, carbon airgel microspheres not only have the characteristics of carbon spheres, but also have the characteristics of lightness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCY02P20/10
Inventor 刘守新李伟赵鑫黄占华张双双刘丽华
Owner NORTHEAST FORESTRY UNIVERSITY
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