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Carbon material for using as catalyst carrier

A technology of catalyst carrier and carbon material, applied in the direction of catalyst carrier, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve problems such as difficulty in use, and achieve the effects of accelerating popularization, reducing usage, and excellent durability

Active Publication Date: 2015-11-18
NIPPON STEEL CHEM &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Silica and alumina have excellent oxidation resistance and heat resistance, but they are insulating substances, so it is difficult to use them in catalyst systems where electron transfer occurs

Method used

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  • Carbon material for using as catalyst carrier
  • Carbon material for using as catalyst carrier
  • Carbon material for using as catalyst carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] First, 150 mL of an ammonia solution (1.9%) containing silver nitrate at a concentration of 1.1 mol% was prepared in a flask, and residual oxygen was removed with an inert gas such as argon or dry nitrogen. The solution was stirred, and acetylene gas was blown into the solution at a flow rate of 25 mL / min for about 4 minutes while the ultrasonic vibrator was immersed in the liquid to impart vibration.

[0065] A solid substance of silver acetylene is produced in the solution, and after the silver acetylide is completely precipitated, the precipitate is filtered with a membrane filter. When filtering, the precipitate was washed with methanol and some ethanol was added to impregnate the precipitate with the methanol. The silver acetylene precipitate immersed in methanol was rapidly heated to a temperature of 160° C. to 200° C. in a vacuum dryer, and kept at a constant temperature for 20 minutes (first heat treatment). During holding, a nanoscale explosive reaction occurs...

Embodiment 2

[0068] Except having set the temperature of the 2nd heat treatment to 1800 degreeC, it processed similarly to Example 1, and obtained the carbon material.

Embodiment 3

[0070] A carbon material was obtained in the same manner as in Example 1 except that the temperature of the second heat treatment was set to 2000° C. and the treatment time was set to 0.5 hours.

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Abstract

A carbon material for use as a catalyst carrier is provided. When used as a catalyst carrier, the carbon material exhibits high chemical stability, electrical conductivity and excellent durability while keeping high porosity, and can attain excellent diffusion of a reaction raw material and a reaction product. This carbon material is characterized by: consisting of a carbon mesoporous dendrite body having a three-dimensional structure where rod- or ring-shaped, carbon-containing bodies are linked to each other in a branched state; having a pore diameter of 1 to 20 nm and a cumulative pore volume of 0.2 to 1.5cc / g as determined by analyzing a nitrogen adsorption isotherm by the Dollimore-Heal method; and exhibiting, in the powder X-ray diffraction spectrum, a peak corresponding to a diffracted ray assignable to the (002) plane of graphite at a diffraction angle (2θ: degree) between 20 to 30 degrees and a peak having a half width of 0.1 to 1.0 degree at 25.5 to 26.5 degrees.

Description

technical field [0001] The present invention relates to a carbon material used in a catalyst carrier and a method for producing the same. Background technique [0002] Catalysts formed by dispersing metal fine particles on a porous carrier are widely used in hydrogenation reactions, dehydrogenation reactions, etc., and silica, alumina, or activated carbon are widely used as carriers. [0003] The characteristics required for the carrier include shape, size, composition, structure, chemical stability in the use environment, thermal stability, durability, affinity with supported metal particles, and contact efficiency with gas-liquid raw materials Wait. In particular, supports with high surface areas are required. [0004] The metal catalyst is dispersed on the surface of the porous substance (carrier) in the form of particles, and the catalytic reaction is carried out on the surface of the metal catalyst. Therefore, in order to increase the reaction efficiency, it is very ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/08B01J23/42B01J32/00B01J35/10B01J37/06C01B31/04H01M4/96H01M8/10
CPCB01J23/42B01J21/18B01J32/00B01J35/0033B01J35/006B01J35/10B01J35/1019B01J35/1023B01J35/1028B01J35/1038B01J35/1042B01J35/1047B01J35/1057B01J35/1061B01J37/06B01J37/08C01B31/04H01M4/96H01M8/10Y02E60/521H01M4/9083C01B32/20C01B32/205Y02E60/50B01J35/393B01J35/33B01J35/618B01J35/617B01J35/633B01J35/635B01J35/643B01J35/638B01J35/647B01J35/615B01J37/343B01J23/50
Inventor 水内和彦河野巧片山正和樋口雅一西信之饭岛孝日吉正孝松本克公
Owner NIPPON STEEL CHEM &MATERIAL CO LTD
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