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Phenolic resin activated carbon microballon and rapid preparation method thereof

A kind of technology of activated carbon microspheres and phenolic resin

Inactive Publication Date: 2010-07-14
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In order to solve the shortcomings of the existing technology that the process is complicated, solvent removal or pulverization is required, and the particle size of the product is difficult to control, the present invention provides a phenolic resin activated carbon microsphere and a rapid preparation method thereof. The preparation method is simple and fast, and the carbon microspheres The spherical particle size is uniform, and the product particle size and specific surface area are controllable

Method used

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  • Phenolic resin activated carbon microballon and rapid preparation method thereof
  • Phenolic resin activated carbon microballon and rapid preparation method thereof
  • Phenolic resin activated carbon microballon and rapid preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) Preparation of resole phenolic resin: phenol: formaldehyde: NaOH molar ratio = 1: 2.2: 0.5, first add phenol in a reaction kettle with a temperature of 45 ° C, and add 40% wt of NaOH solution, fully stir for 10 min, add Formaldehyde, control the temperature at 75-80°C to react for 40 minutes, raise the temperature to 95°C, keep the heat for 2 hours, cool to below 35°C and discharge the material to obtain the aqueous solution of resole phenolic resin. The weight percentage concentration of resole phenolic resin is 45%, and the viscosity is: 20°C, 15-100s when coating -4 cups.

[0034] (2) Spray drying of resole phenolic resin: Spray drying is carried out under the conditions of inlet temperature 225±5℃, outlet temperature 90℃, feed rate 50mL / min, spray disc rotation speed 12000r / min, and the particle size is 50-350um , Brown phenolic resin microspheres with a volatile content of 5.2%.

[0035] (3) Thermal curing of microspheres: curing the resin microspheres obtaine...

Embodiment 2

[0038] (1) Preparation of resole phenolic resin: phenol: formaldehyde: NaOH molar ratio = 1: 2.2: 0.8, first add phenol in a reaction kettle with a temperature of 45 ° C, and add 40% wt of NaOH solution, fully stir for 10 min, add Formaldehyde, control the temperature at 75-80°C to react for 40 minutes, raise the temperature to 95°C, keep the heat for 2.5 hours, cool to below 35°C and discharge the material to obtain an aqueous solution of resole phenolic resin. The weight percentage concentration of resole phenolic resin is 65%, and the viscosity is : 20°C, 15-100s when coating -4 cups.

[0039] (2) Spray drying of resole phenolic resin: spray drying under the conditions of inlet temperature 235±5°C, outlet temperature 90±2°C, feed rate 50mL / min, spray disc speed 10000r / min, and the particle size is 80 ~350μm brown phenolic resin microspheres with a volatile content of 3.2%.

[0040] (3) Thermal curing of microspheres: curing the resin microspheres obtained in step (2) at 20...

Embodiment 3

[0043] (1) Preparation of resole phenolic resin: phenol: formaldehyde: KOH molar ratio = 1: 2.2: 0.6, first add phenol in a reaction kettle with a temperature of 45 ° C, and add 40% KOH solution, stir for 10 minutes, add formaldehyde , Control the temperature at 75-80°C to react for 40 minutes, raise the temperature to 95°C, keep the heat for 2 hours, cool to below 35°C and discharge the material, and then the aqueous solution of resole phenolic resin is obtained. The weight percentage concentration of resole phenolic resin is 90%, viscosity: 20 ℃, 15-100s when coating -4 cups.

[0044] (2) Fluidized bed drying of resole phenolic resin: drying under the conditions of bed temperature 225±5°C, fluidization gas velocity 0.5m / s, and spray feed rate 50mL / min, to obtain a particle size of 70-350um , Brown phenolic resin microspheres with a volatile content of 5.8 wt%.

[0045] (3) Thermal curing of microspheres: curing the resin microspheres obtained in step (2) at 200° C. for 1 ho...

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Abstract

The invention provides a phenolic resin activated carbon microballon and a rapid preparation method thereof. The rapid preparation method comprises the following steps of: preparing a phenolic resin microballon with a certain size by carrying out spray drying or fluidized bed drying on water-soluble phenolic resin or spirit soluble phenolic resin; thermocuring the microballon; carrying out temperature-rising carbonization on a curing sample in an inert atmosphere; mixing the curing sample (or a carbonized sample) with an active agent; then carrying out temperature-rising carbonized activation in the inert atmosphere; and carrying out cooling, washing, acid washing and washing to obtain a phenolic resin based activated carbon microballon. The invention has the advantages of wide raw material source, low price, simple process, high yield, uniform grain diameter of products, controllable sphere diameter and specific area and convenient industrial implementation.

Description

technical field [0001] The invention relates to an activated carbon material and a preparation method thereof, in particular to a rapid preparation method of phenolic resin activated carbon microspheres. Background technique [0002] Porous phenolic resin-based carbon microspheres are widely used in the fields of adsorption and storage, and have great potential application prospects in supercapacitor materials, lithium-ion batteries, and catalysis. [0003] Since the invention of mesophase carbon microspheres, people have been devoting themselves to the research of preparing carbon microspheres from various raw materials. The preparation of carbon microspheres from pitch must go through a process of oxidation and non-melting of pitch balls, which is time-consuming and energy-consuming, and often has problems such as poor sphericity and difficult control of specific surface area. [0004] The patent of Liu Lang et al. of Shanxi Institute of Coal Chemistry, Chinese Academy of...

Claims

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Application Information

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IPC IPC(8): C01B31/12
Inventor 蒋剑春郑志锋黄元波孙康戴伟娣邓先伦孙云娟
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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