Method for preparing modified activated carbon at normal pressure

An activated carbon and modified technology, applied in chemical instruments and methods, inorganic chemistry, ion exchange, etc., can solve the problems of increasing the operating cost of the preparation process, and achieve the effect of saving the preparation cost and good adsorption performance.

Inactive Publication Date: 2013-09-11
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cracking and activation process of this technology needs to be completed under vacuum conditions, and vacuuming or inert

Method used

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  • Method for preparing modified activated carbon at normal pressure
  • Method for preparing modified activated carbon at normal pressure

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0027] Example 1

[0028] Mix 3g of straw powder with 3mL of calcium acetate solution (the concentration of calcium acetate solution is 10% by mass) in a beaker. Ultrasound for 5 minutes, stand still for 5 minutes, repeat the ultrasound three times, and stand at room temperature for 3 hours. Then the straw powder / calcium acetate mixture was dried in an oven at 180° C. and kept at 180° C. for 1 h. Add 60mL of zinc chloride solution (mass percentage concentration of zinc chloride solution is 10%) to the dried mixture, ultrasonic for 5 minutes, stand for 5 minutes, repeat three times, stir, so that the sample and solution are fully mixed, and stand at room temperature 3h. Then the mixture was baked in an oven at 110°C until it became viscous, and then the precursor was transferred to a crucible and compacted. Cover the crucible and place it in a muffle furnace, raise the temperature to 700°C, keep it for 1h, cool to room temperature and take out the modified activated carbon. ...

Example Embodiment

[0029] Example 2

[0030] Mix 3g of straw powder with 3mL of calcium acetate solution (the concentration of calcium acetate solution is 10% by mass) in a beaker. Ultrasound for 5 minutes, stand still for 5 minutes, repeat the ultrasound three times, and stand at room temperature for 3 hours. Then the straw powder / calcium acetate mixture was dried in an oven at 180° C. and kept at 180° C. for 1 h. Add 45mL of zinc chloride solution (mass percentage concentration of zinc chloride solution is 10%) to the dried mixture, ultrasonic for 5min, stand for 5min, repeat three times, stir, so that the sample and solution are fully mixed, and stand at room temperature 3h. Then the mixture was baked in an oven at 110°C until it became viscous, and then the precursor was transferred to a crucible and compacted. Cover the crucible and place it in a muffle furnace, raise the temperature to 700°C, keep it for 1h, cool to room temperature and take out the modified activated carbon. Grind the...

Example Embodiment

[0031] Example 3

[0032] Mix 3g of straw powder with 3mL of calcium acetate solution (the concentration of calcium acetate solution is 10% by mass) in a beaker. Ultrasound for 5 minutes, stand still for 5 minutes, repeat the ultrasound three times, and stand at room temperature for 3 hours. Then the straw powder / calcium acetate mixture was dried in an oven at 180° C. and kept at 180° C. for 1 h. Add 30mL of zinc chloride solution (mass percentage concentration of zinc chloride solution is 10%) to the dried mixture, ultrasonic for 5 minutes, stand for 5 minutes, repeat three times, stir, so that the sample and solution are fully mixed, and stand at room temperature 3h. Then the mixture was baked in an oven at 110°C until it became viscous, and then the precursor was transferred to a crucible and compacted. Cover the crucible and place it in a muffle furnace, raise the temperature to 700°C, keep it for 1h, cool to room temperature and take out the modified activated carbon. ...

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Abstract

The invention provides a method for preparing modified activated carbon at normal pressure. The method comprises the following steps of: mixing dried straws with calcium acetate solution for reacting, thereby obtaining a first-order precursor, and further mixing the first-order precursor with zinc chloride solution for reacting, thereby obtaining a second-order precursor, and finally, performing sintering to obtain bulk activated carbon. The method provided by the invention is capable of synthesizing the modified activated carbon by one step through thermal treatment at normal pressure with the agricultural waste straws as raw materials and calcium acetate and calcium acetate as activators.

Description

technical field [0001] The invention relates to a method in the technical field of activated carbon production, in particular to a method for preparing modified activated carbon under normal pressure using organic matters as raw materials. Background technique [0002] Activated carbon is a carbon material with a highly developed pore structure and a large specific surface area. It is widely used in wastewater treatment, solvent recovery, food and beverage purification, carrier, medicine, gold extraction and other fields. In recent years, organic matter has become an important raw material for the preparation of activated carbon because of its low price, high carbon content, easy availability of materials, sufficient raw materials, green and non-toxic. Effective use of waste organic matter to produce activated carbon can not only save resources but also help protect the ecological environment. [0003] The methods for preparing activated carbon from organic matter mainly in...

Claims

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Application Information

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IPC IPC(8): C01B31/12B01J20/20B01J20/30B01D15/08C01B32/324C01B32/348
Inventor 邹亚娟许实赖奕坚
Owner SHANGHAI JIAO TONG UNIV
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