A composition for carbon catalytic hydrogenation to methane

A composition, a technology for producing methane, applied in the directions of chemical/physical processes, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of low cost

Active Publication Date: 2021-07-20
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This catalyst cannot fundamentally solve the shortcomings of traditional alkali metal catalysts

Method used

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  • A composition for carbon catalytic hydrogenation to methane
  • A composition for carbon catalytic hydrogenation to methane
  • A composition for carbon catalytic hydrogenation to methane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 0.0190g of Cu(NO 3 ) 2 ·3H 2 O, 0.0248g of Ni(NO 3 ) 2 ·6H 2 O, 0.0589g Ca(NO 3 ) 2 ·4H 2 O Mix and place in a small beaker, add 0.7ml of deionized water to obtain a mixed solution evenly by ultrasonication, weigh 1g of 20-40 mesh coal char into the mixed solution, impregnate with ultrasonic for 2 hours, and dry in a drying oven at 105°C for 24 hours , to be cooled to room temperature and stored in a desiccator for later use.

[0030] Put the above dried coal char into the fixed bed reactor, and carry out gasification reaction under the conditions of reaction temperature 750°C, hydrogen pressure 2MPa, hydrogen flow rate 50ml / min to obtain product methane.

Embodiment 2

[0032] Weigh 0.0380g of Cu(NO 3 ) 2 ·3H 2 O, 0.0495g of Ni(NO 3 ) 2 ·6H 2 O, 0.0589g Ca(NO 3 ) 2 ·4H 2 O Mix and place in a small beaker, add 0.7ml of deionized water to obtain a mixed solution evenly by ultrasonication, weigh 1g of 20-40 mesh coal char into the mixed solution, impregnate with ultrasonic for 2 hours, and dry in a drying oven at 105°C for 24 hours , to be cooled to room temperature and stored in a desiccator for later use.

[0033] Put the above dried coal char into the fixed bed reactor, and carry out gasification reaction under the conditions of reaction temperature 750°C, hydrogen pressure 2MPa, hydrogen flow rate 50ml / min to obtain product methane.

Embodiment 3

[0035] Weigh 0.0570g of Cu(NO 3 ) 2 ·3H 2 O, 0.0743g Ni(NO 3 ) 2 ·6H 2 O, 0.0589g Ca(NO 3 ) 2 ·4H 2 O Mix and place in a small beaker, add 0.7ml of deionized water to obtain a mixed solution evenly by ultrasonication, weigh 1g of 20-40 mesh coal char into the mixed solution, impregnate with ultrasonic for 2 hours, and dry in a drying oven at 105°C for 24 hours , to be cooled to room temperature and stored in a desiccator for later use.

[0036] Put the above dried coal char into the fixed bed reactor, and carry out gasification reaction under the conditions of reaction temperature 750°C, hydrogen pressure 2MPa, hydrogen flow rate 50ml / min to obtain product methane.

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Abstract

The invention discloses a composition for carbon catalytic hydrogenation to methane. The composition comprises: copper salt, nickel salt and calcium salt, wherein the mass ratio of Cu:Ni:Ca is 0.5-5: 0.5~5:1. Compared with the existing catalysts for catalytic hydrogenation of coal to methane, the composition of the present invention adopts Cu-Ni-Ca ternary combination, which not only has a good catalytic effect, but also has the advantages of good stability, not easy to deactivate, and low cost , suitable for industrial use.

Description

technical field [0001] The invention belongs to the field of catalytic hydrogenation, in particular to a composition for catalytic hydrogenation of carbon to methane, and the application of the composition in catalytic hydrogenation of solid carbonaceous materials to prepare methane. Background technique [0002] According to the different chemical reaction steps, coal-to-natural gas technology can be divided into direct coal-to-natural gas technology and indirect coal-to-natural gas technology. Indirect coal-to-natural gas technology is to make syngas from coal gasification, and then carry out methanation of syngas. Compared with indirect coal-to-natural gas, the main reaction of direct coal-to-natural gas technology is C+2H 2 →CH 4 , has the characteristics of short process, simple process and low investment. [0003] Most of the existing catalysts for direct catalytic hydrogenation of coal to methane are alkali metal potassium salts and sodium salts and transition meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/25C10L3/08
CPCB01J27/25C10L3/08
Inventor 张建树孙浩张峰
Owner SHIHEZI UNIVERSITY
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