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Preparation method of metal catalyst loaded on porous carbon by means of coal or biomass gasification

A technology for supporting metals and catalysts, which is applied in the field of preparing porous carbon-supported metal catalysts

Active Publication Date: 2018-02-02
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies or reports on the preparation of porous carbon-supported metal catalysts using coal or biomass gasification.

Method used

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  • Preparation method of metal catalyst loaded on porous carbon by means of coal or biomass gasification
  • Preparation method of metal catalyst loaded on porous carbon by means of coal or biomass gasification
  • Preparation method of metal catalyst loaded on porous carbon by means of coal or biomass gasification

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Step 1. Select wood chips as a biomass raw material, dry, grind and sieve them into particles with a size of 60-200 μm to obtain carbon-based raw material particles (referred to as wood chips for short. The industrial analysis is as follows: the moisture content is 9.71%, The ash content is 0.15%, the volatile matter content is 83.04%, and the fixed carbon content is 7.10%).

[0037] Step 2, select nickel nitrate (analytical pure) as the precursor of the main component of the catalyst, weigh nickel nitrate and sawdust particles respectively according to the mass ratio of 1:50, and utilize equal volume impregnation method to mix nickel nitrate and sawdust particles Mix evenly; then, under a high-purity nitrogen protective atmosphere, preheat at 390°C for 30 minutes to form a semi-coke-loaded metal oxide (that is, wood chip semi-coke-loaded nickel oxide).

[0038] Step 3. Use semi-coke-loaded metal oxides (i.e., nickel oxide loaded on sawdust semi-coke) as the material fo...

Embodiment 2

[0041] The difference from Example 1 is that nickel nitrate and sawdust particles were weighed respectively according to the mass ratio of 1:20.

Embodiment 3

[0043] The difference from Example 1 is that nickel nitrate and wood chips were weighed according to the mass ratio of 1:12.5.

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Abstract

The invention discloses a preparation method of a metal catalyst loaded on porous carbon by means of coal or biomass gasification. Raw materials of coal or biomass are ground, and particles of carbon-based materials are obtained; the precursor of a main component of the catalyst is uniformly mixed with the particles of the carbon-based materials, and then preheating treatment is conducted, so thatmetal oxide loaded on semicoke is formed; the metal oxide loaded on the semicoke is used as a material of a gasification reaction, and the gasification reaction is carried out in a reactor; residuesafter the reaction of the step three are cooled to 100 DEGC or below in the protection of an inert gas, and the metal catalyst loaded on the porous carbon is obtained. By means of the technical elements that the product of coal or biomass subjected to the gasification reaction is hydrogen-rich gas and catalytic gasification of coal or biomass can be promoted by the porous carbon and the metal oxide, the purpose that the preparation process of the catalyst is regulated by means of process parameters of the coal or biomass gasification reaction is achieved, and a novel technology that the metalcatalyst is loaded on the porous carbon in situ and can be reduced in situ is developed.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, and in particular relates to a method for preparing a porous carbon-supported metal catalyst by gasification of coal or biomass. Background technique [0002] According to statistics, catalysts are used in more than 90% of industrial processes, such as chemical, petrochemical, biochemical, and environmental protection. The preparation method of the catalyst has an important influence on the catalytic activity and stability of the catalyst. Among them, precipitation method and impregnation method are two very mature and commonly used catalyst preparation methods. The precipitation method is usually to add a precipitant (such as sodium carbonate, sodium hydroxide) to one or more metal salt solutions, and after precipitation, washing, filtration, drying, molding, roasting, and activation, the final catalyst product can be obtained. This method is generally used to manufacture catalysts ...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/755B01J23/80C01B3/26C01B3/30
CPCC01B3/26C01B3/30B01J23/75B01J23/755B01J23/78B01J23/80B01J35/50B01J35/615
Inventor 张建波李星谢汶町张国荣马晓迅
Owner NORTHWEST UNIV
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