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Preparation method of high-specific surface area mangosteen shell active carbon rich in mesopores

A technology with high specific surface area and mangosteen shell, which is used in the removal of solid waste and other directions

Inactive Publication Date: 2012-10-17
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the preparation of activated carbon from waste mangosteen husks with potassium oxalate as an activator

Method used

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  • Preparation method of high-specific surface area mangosteen shell active carbon rich in mesopores
  • Preparation method of high-specific surface area mangosteen shell active carbon rich in mesopores

Examples

Experimental program
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Effect test

Embodiment 1

[0018] (1) Wash the discarded mangosteen shells, dry them naturally, crush them, pass through a 40-mesh sieve, and dry them at 105°C for 12 hours to constant weight, then seal them in sealed bags and place them in a desiccator for later use.

[0019] (2) Mix and impregnate the mangosteen shell powder described in step (1) and the potassium oxalate solution with a mass fraction of 20% at a mass ratio of 1:0.5, mix and impregnate with the potassium oxalate solution for 12 hours, then dry at 105°C for 12 hours to obtain a mixed Put the mixed material in a muffle furnace, raise the temperature to 700 °C at a rate of 8 °C / min, keep it warm for 2 hours, and cool naturally to obtain a carbonized sample.

[0020] (3) The carbonized sample described in step (2) was acid-washed with 10% HCl solution for 30 minutes, the temperature was controlled at 70°C, and then washed with deionized water until the pH value was neutral, and dried at 105°C for 12 hours. That is, the mangosteen shell ac...

Embodiment 2

[0022] (1) Wash the discarded mangosteen shells, dry them naturally, crush them, pass through a 40-mesh sieve, and dry them at 110°C for 24 hours to constant weight, then seal them in sealed bags and place them in a desiccator for later use.

[0023] (2) Mix and impregnate the mangosteen husk powder described in step (1) with the potassium oxalate solution with a mass fraction of 30% in a mass ratio of 1:2 and impregnate with the potassium oxalate solution for 24 hours, then dry at 110°C for 24 hours to obtain a mixed Put the mixed material in a muffle furnace, raise the temperature to 900 °C at a rate of 12 °C / min, keep it warm for 1 h, and cool naturally to obtain a carbonized sample.

[0024] (3) The carbonized sample described in step (2) was acid-washed with 15% HCl solution for 45 min, the temperature was controlled at 90 °C, and then washed with deionized water until the pH value was neutral, and dried at 110 °C for 24 h , that is, a mangosteen shell activated carbon wi...

Embodiment 3

[0026] (1) Wash the discarded mangosteen shells, dry them naturally, crush them, pass through a 40-mesh sieve, and dry them at 108°C for 18 hours to constant weight, then seal them in sealed bags and place them in a desiccator for later use.

[0027] (2) Mix and impregnate the mangosteen shell powder described in step (1) and the potassium oxalate solution with a mass fraction of 20-30% at a mass ratio of 1:1.2, and then mix and impregnate with the potassium oxalate solution for 18 hours, then dry at 108°C for 18 hours To obtain the mixture, put the mixture in a muffle furnace, raise the temperature to 800°C at a rate of 10°C / min, keep it warm for 2 hours, and cool naturally to obtain a charred sample.

[0028] (3) The carbonized sample described in step (2) was acid-washed with 12% HCl solution for 37 min, the temperature was controlled at 80 °C, and then washed with deionized water until the pH value was neutral, and dried at 108 °C for 18 h , that is, a mangosteen shell act...

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Abstract

The invention discloses a preparation method of high-specific surface area mangosteen shell active carbon rich in mesopores. The preparation method comprises the following steps of cleaning waste mangosteen shells, drying in air, crushing, sieving by a 40 meshes of sieve, drying by an oven at a temperature of 105 to 110 DEG C for 12 to 24 hours to constant weight, mixing to dip the dried mangosteen shell powder with a potassium oxalate solution for 12 to 24 hours, drying by an oven at a temperature of 105 to 110 DEG C for 12 to 24 hours, placing the dried material obtained by the previous step into a muffle furnace, heating to a temperature of 700 to 900 DEG C, keeping the temperature for 1 to 3 hours, cooling in air, washing by a HCl solution for 30 to 45 minutes, washing by deionized water to a pH value of 7, and drying to obtain the high-specific surface area mangosteen shell active carbon rich in mesopores. The preparation method adopts mangosteen shell waste as a raw material andrealizes one-step preparation of the high-specific surface area mangosteen shell active carbon rich in mesopores through multiple high-efficiency activation produced by potassium oxalate stage pyrolysis products, and thus has excellent economic and ecological benefits.

Description

technical field [0001] The invention relates to a preparation method of mangosteen shell activated carbon with high specific surface area and rich in mesopores, and belongs to the technical field of preparation and application of environmentally friendly materials. Background technique [0002] As a porous material with excellent performance, activated carbon is widely used in many industrial fields, such as gas phase / liquid phase purification, wastewater treatment, catalysis, etc. With the development of production technology, new uses of special functional activated carbon in high-tech fields such as supercapacitor electrode materials and energy gas storage materials are emerging. A large number of research results show that the performance of activated carbon is closely related to the characteristics of its preparation raw materials and activation conditions. In recent years, with the continuous enhancement of people's awareness of environmental protection and resource c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/12B09B3/00
Inventor 陈燕丹陈卫群黄彪黄明堦
Owner FUJIAN AGRI & FORESTRY UNIV
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