Large-hole-diameter active carbon and preparation method thereof

A technology of activated carbon and large pore size, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of large anion radius, decreased utilization rate of activated carbon, and inability to diffuse into the interior of micropores, achieving good results and improving electricity. Chemical properties, reasonable distribution effect

Inactive Publication Date: 2018-05-01
FUJIAN XINSEN CARBON
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Activated carbon as an energy storage material must have a large specific surface area, because the larger the specific surface area, the higher the capacity of activated carbon, and the higher the specific capacity and specific energy of the energy storage material; at the same time,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The invention provides a kind of preparation method of activated carbon with large pores, comprising the steps of:

[0014] Step 1. Grinding the activated carbon raw material, soaking the raw material in an ethanol solution, adding hydroxide as a pore-enlarging agent in the ethanol solution, and after ultrasonic vibration, washing and drying with water to obtain pretreated activated carbon;

[0015] Step 2, adding surfactant to the pretreated activated carbon, impregnating at 80-100°C for 7-9 hours, stirring at intervals of 2-3 hours to make it evenly mixed;

[0016] Step 3. Heating for 2-4 hours under the protection of nitrogen, the heating temperature is 300-500 degrees to obtain pretreated activated carbon, and then switch the nitrogen to a mixed gas of water vapor and carbon dioxide, and activate it at 700-800 degrees for 1-3 hours , to obtain large-pore activated carbon.

[0017] The preparation method of the above-mentioned large-pore activated carbon adopts the ...

Embodiment 1

[0026] A preparation method for large-pore activated carbon, comprising the steps of:

[0027] Step 1. Select 100 mesh coconut shell activated carbon and soak in ethanol solution, which also includes 1.5mol / L potassium hydroxide. After ultrasonic oscillation, the frequency of the ultrasonic wave is 65Hz, and the oscillation time is 1-2 Hour. Washing and drying with water to obtain pretreated activated carbon;

[0028] Step 2, adding a surfactant to the pretreated activated carbon and impregnating it at 90° C. for 8 hours, stirring at intervals of 2 hours to make it evenly mixed; the surfactant is cetylpyridinium chloride. The molar concentration of the surfactant is 13mmol / L. The weight ratio of the pretreated activated carbon to the surfactant is 1:1.

[0029] Step 3. Heating under the protection of nitrogen for 3 hours at a heating temperature of 350 degrees to obtain pretreated activated carbon, then switching nitrogen to a mixed gas of water vapor and carbon dioxide, an...

Embodiment 2

[0032] A preparation method for large-pore activated carbon, comprising the steps of:

[0033] Step 1. Select 80-mesh coconut shell activated carbon and soak it in ethanol solution, which also includes 1mol / L potassium hydroxide. After ultrasonic oscillation, the frequency of the ultrasonic wave is 60Hz, and the oscillation time is 1 hour. Washing and drying with water to obtain pretreated activated carbon;

[0034] Step 2, adding a surfactant to the pretreated activated carbon and impregnating it at 80° C. for 7 hours, stirring at intervals of 2 hours to make it evenly mixed; the surfactant is cetylpyridinium chloride. The molar concentration of the surfactant is 10mmol / L. The weight ratio of the pretreated activated carbon to the surfactant is 1:1.

[0035] Step 3. Heating under the protection of nitrogen for 2 hours at a heating temperature of 300 degrees to obtain pretreated activated carbon, then switching nitrogen to a mixed gas of water vapor and carbon dioxide, and a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Specific pore volumeaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of active carbon preparation, in particular to large-hole-diameter active carbon and a preparation method thereof. The method comprises the following steps of 1, crushing active carbon raw materials; soaking the raw materials into an ethanol solution; adding hydroxide into the ethanol solution to be used as a pore-enlarging agent; performing ultrasonic wave oscillation; then, performing water washing drying to obtain pre-treated active carbon; 2, adding a surface active agent into the pretreated active carbon for uniform mixing; 3, performing heating under nitrogen gas protection to obtain pretreated active carbon; next, switching the nitrogen into mixed gas of water vapor and carbon dioxide; performing activation to obtain the large-hole-diameter activecarbon. The large-hole-diameter active carbon and the preparation method have the advantages that firstly, physical and chemical methods are used for simultaneously acting for pore expansion; secondly, in the activation process, the mixed gas of carbon dioxide and water vapor is used for physical activation; the active carbon pore diameter is expanded under the cooperated effects of the carbon dioxide and the water vapor.

Description

technical field [0001] The invention relates to the field of activated carbon preparation, in particular to a large-pore activated carbon and a preparation method thereof. Background technique [0002] Activated carbon has excellent physical and chemical stability, developed pore structure and high adsorption capacity, and is widely used in food, chemical, environmental protection, pharmaceutical and new energy and other related industries. Such as catalyst carrier, battery electrode, supercapacitor, gas storage and biomedicine, it has been widely used. Among them, the research and development of highly conductive activated carbon in battery and supercapacitor energy storage electrode materials has attracted more and more attention. [0003] Activated carbon as an energy storage material must have a large specific surface area, because the larger the specific surface area, the higher the capacity of activated carbon, and the higher the specific capacity and specific energy ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B32/354
Inventor 林鹏林锴黄勇徐沁杰林雯怡
Owner FUJIAN XINSEN CARBON
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap