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Method for loading nano platinum on activated carbon fiber

A technology of activated carbon fiber and nano-platinum, applied in separation methods, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of effect effect, small pores of activated carbon fibers, high cost, and achieve extended service life, increased stability, The effect of increasing the binding force

Active Publication Date: 2020-04-28
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When the above method loads metals or metal oxides on activated carbon, the preparation process is cumbersome, the cost is high, and it is not suitable for a large amount of loading on activated carbon fibers
At the same time, due to the small pores and limited quantity of ordinary activated carbon fibers, the loading capacity of nano-platinum is insufficient, and the loading fastness is not good, so the effect is affected

Method used

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  • Method for loading nano platinum on activated carbon fiber
  • Method for loading nano platinum on activated carbon fiber
  • Method for loading nano platinum on activated carbon fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment provides a kind of method that activated carbon fiber supports nano-platinum, and described method comprises the following steps:

[0042] (1) Choose 2g of viscose-based activated carbon fiber and dry it at 150°C for 2 hours, place the dried activated carbon fiber in a crucible with metal tantalum skin as the inner liner, the thickness of the tantalum skin is 0.05mm, and then add 0.03g magnesium The weight ratio of powder, magnesium powder and activated carbon fiber is 3:200, the reaction temperature is 850°C, the reaction atmosphere is nitrogen, and the reaction time is 30 minutes; the product obtained after the reaction is ultrasonically cleaned in deionized water for 1 hour, and then heated at 120°C Under drying for 2 hours, obtain the expanded activated carbon fiber;

[0043] (2) The pore-expanding activated carbon fiber that step (1) is obtained is impregnated in the chloroplatinic acid aqueous solution, the mass percent of chloroplatinic aci...

Embodiment 2

[0051] The present embodiment provides a kind of method that activated carbon fiber supports nano-platinum, and described method comprises the following steps:

[0052] (1) Select 2 g of polyacrylonitrile-based activated carbon fibers and dry them at 150°C for 2 hours. Place the dried activated carbon fibers in a crucible with metal tantalum skin as the inner liner. The thickness of the tantalum skin is 0.08 mm, and then add 0.05 g magnesium powder, the weight ratio of magnesium powder and activated carbon fiber is 1:40, the reaction temperature is 1000°C, the reaction atmosphere is helium, and the reaction time is 1 hour; after the reaction is completed, the resulting product is ultrasonically cleaned in deionized water for 1.5 hours, and then Dry at 120°C for 2 hours to obtain expanded activated carbon fibers;

[0053] (2) The pore-expanding activated carbon fiber that step (1) is obtained is impregnated in the aqueous solution of chloroplatinic acid, and the mass percent of...

Embodiment 3

[0055] The present embodiment provides a kind of method that activated carbon fiber supports nano-platinum, and described method comprises the following steps:

[0056] (1) Select 2g of pitch-based activated carbon fiber and dry it at 150°C for 2 hours, place the dried activated carbon fiber in a crucible with metal tantalum skin as the inner liner, the thickness of the tantalum skin is 0.1mm, and then add 0.1g magnesium The weight ratio of magnesium powder and activated carbon fiber is 1:20, the reaction temperature is 1200°C, the reaction atmosphere is nitrogen, and the reaction time is 2 hours; Dry for 2 hours to obtain the expanded activated carbon fiber;

[0057] (2) The pore-enlarging activated carbon fiber that step (1) is obtained is impregnated in the aqueous solution of chloroplatinic acid, and the mass percent of chloroplatinic acid is 5wt.%, ultrasonic treatment 150 minutes; Immersed in sodium borohydride aqueous solution, the mass percentage of sodium borohydride...

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Abstract

The invention relates to a method for loading nano platinum on an activated carbon fiber. The method comprises the following steps: mixing and heating the activated carbon fiber and magnesium powder to react, and washing after the reaction is finished, thereby obtaining a reamed activated carbon fiber; and then loading nano platinum on the reamed activated carbon fiber to obtain the activated carbon fiber loaded with nano platinum. According to the method, the active carbon fiber is subjected to reaming treatment so that the number of macropores is increased remarkably, the pore volume is increased accordingly, and the loading capacity of the nano platinum on the activated carbon fiber is increased. In addition, the invention also relates to a method, the reaming treatment method can realize fine control of internal and external pore structures of the activated carbon fiber, and the pore passage surface of the activated carbon fiber subjected to reaming treatment is slightly changed sothat the binding force between the activated carbon fiber and nano platinum is increased, the nano platinum is loaded more firmly, the stability of the nano platinum is improved, the service life ofthe nano platinum is prolonged and the application prospect is good.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a method for supporting nano-platinum on activated carbon fibers. Background technique [0002] Activated carbon fiber has the characteristics of large specific surface area and many pores, and nano-platinum has excellent photocatalysis and other functions. The combination of the two has a strong adsorption and removal function for harmful gases, liquids, harmful ions and solid particles. Environmental protection and many other fields have a wide range of applications. [0003] Activated carbon fibers have excellent adsorption properties, and can be loaded with different metals and inorganic functional materials when preparing functional activated carbon fibers. For example, CN105817234B discloses a method for extracting nanometer multi-metal oxide-loaded activated carbon fibers. The vanadium-titanium steel slag washed and screened is dissolved in sulfuric acid to separate th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/52B01J21/18B01J37/08B01J35/10B01J35/06B01D53/86B01D53/72
CPCB01J23/52B01J21/18B01J37/0018B01D53/8668B01J35/58B01J35/633B01J35/695Y02E60/50
Inventor 姚理荣孙通吴绥菊潘刚伟徐思峻孙启龙季涛
Owner NANTONG UNIVERSITY
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