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Preparation method of larch-based ordered spherical porous structure carbon film

A technology of larch and pore structure, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of complex reaction steps, high cost, uneven distribution of pore structure, etc., achieve low raw material cost, improve Utilization rate, effect of saving solvent consumption

Inactive Publication Date: 2015-01-28
NORTHEAST FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Uneven pore structure distribution, complicated reaction steps, and high cost are common problems

Method used

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  • Preparation method of larch-based ordered spherical porous structure carbon film

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Embodiment 1

[0029] 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. Then add 90mL formaldehyde solution (37%), 3.0g NaOH, 10.0g P123, 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 at 100°C drying in an oven to obtain a larch-based carbon membrane mesophase. Put the above-mentioned molecular sieve carbon membrane mesophase into a muffle furnace, heat up to 700°C for carbonization for 2 hours, and cool to room temperature to obtain a...

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. Then add 80mL formaldehyde solution (37%), 3.0g NaOH, 10.0g P123, react at 40°C for 18h, then add 10mL concentrated hydrochloric acid, adjust the pH to 0.5, continue the reaction for 10h, cool to room temperature after the reaction, and wash at 100°C drying in an oven to obtain a larch-based carbon membrane mesophase. Put the above-mentioned molecular sieve carbon membrane mesophase into a muffle furnace, heat up to 700°C for carbonization for 3 hours, and cool to room temperature to obtain...

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Abstract

A preparation method of a larch-based spherical porous structure carbon film is characterized by comprising the following steps: using larch wood chips as a raw material and phenol as a liquefier, liquefying the larch to obtain a larch liquefied substance under an acid condition, reacting with the methanol under an alkaline condition to produce a larch-based resin, selecting a segmented copolymer P123 as a soft template, reacting under an acid condition to produce an intermediate phase of the larch-based ordered spherical porous structure carbon film, and forging at a high temperature under nitrogen protection conditions through hydrothermal reaction to obtain a product. The operating technology has the main characteristics that the biomass larch is used as the raw material, the resource is rich and reutilized, energy is saved, and consumption is reduced; the larch wood chips are decomposed through a liquefying process, and the inner structure is more easily controlled; the preparation of the ordered spherical porous structure carbon film is finished through the utilization of the mild segmented copolymer P123 as the template agent, the pollution is low, the yield is high, the ordered spherical porous structure carbon film can be effectively applied on the aspect of gas permeation separation, and the application field of the carbon material is widened.

Description

Technical field: [0001] The invention relates to the field of biochar materials, in particular to a method for preparing a larch-based ordered spherical pore structure carbon film. Background technique: [0002] In recent years, the preparation of carbon materials has been further developed. However, 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 significance to prepare carbon materials with regular morphology and regular pore structure. [0003] Carbon membrane (CM) is a kind of membrane structure with rich pore structure, strong adsorption performance and permeabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/00B01D67/00B01J20/20B01J20/28
Inventor 刘守新李伟赵鑫
Owner NORTHEAST FORESTRY UNIVERSITY
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