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A method for preparing porous carbon-supported metal catalysts by gasification of coal or biomass

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

Active Publication Date: 2019-11-26
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A method for preparing porous carbon-supported metal catalysts by gasification of coal or biomass
  • A method for preparing porous carbon-supported metal catalysts by gasification of coal or biomass
  • A method for preparing porous carbon-supported metal catalysts by gasification of coal or biomass

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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

A method for preparing porous carbon-supported metal catalysts by gasification of coal or biomass. The coal or biomass raw materials are ground to obtain carbon-based raw material particles; the precursor of the main component of the catalyst and the carbon-based raw material particles are evenly mixed, and then Preheat treatment to form a semi-coke supported metal oxide; use the semi-coke supported metal oxide as a material for the gasification reaction, and perform the gasification reaction in the reactor; place the residue after the reaction in step three under inert gas protection The reaction mixture was cooled to below 100°C to obtain a porous carbon-supported metal catalyst. The products of the medium-temperature gasification reaction of coal or biomass are hydrogen-rich gas, porous carbon, and metal oxides, which can promote the catalytic gasification of coal or biomass. In order to control the catalyst preparation process, a new process technology was developed in which metal catalysts are supported on porous carbon in situ and can be reduced in situ.

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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Patent Type & Authority Patents(China)
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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