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A two-dimensional crystal compound ti 2 c as an adsorbent in the adsorption and decomposition of methane in low-concentration gas

A low-concentration gas, two-dimensional crystal technology, applied in chemical/physical processes, physical/chemical process catalysts, separation methods, etc., can solve the problem of unresolved hazards of methane

Inactive Publication Date: 2018-01-05
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So the hazards of methane have not been resolved

Method used

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  • A two-dimensional crystal compound ti <sub>2</sub> c as an adsorbent in the adsorption and decomposition of methane in low-concentration gas
  • A two-dimensional crystal compound ti <sub>2</sub> c as an adsorbent in the adsorption and decomposition of methane in low-concentration gas
  • A two-dimensional crystal compound ti <sub>2</sub> c as an adsorbent in the adsorption and decomposition of methane in low-concentration gas

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Experimental program
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Embodiment 1

[0016] Two-dimensional crystal compound Ti 2 The preparation of C nanometer powder comprises the steps:

[0017] (1) Prepare a mixed solution of ammonium fluoride and hydrochloric acid

[0018] Measure 20 ml of hydrochloric acid with a concentration of 36 wt%, add 20 ml of deionized water, and dilute to a concentration of about 6 mol / L hydrochloric acid. Weigh 2 g of ammonium fluoride (can also be sodium fluoride, potassium fluoride or lithium fluoride) powder and dissolve it in the above-mentioned diluted hydrochloric acid, and ultrasonicate for 10 minutes to fully dissolve the fluoride salt powder in the hydrochloric acid to obtain 6 mol / L fluoride salt solution;

[0019] (2) Two-dimensional crystal compound Ti 2 Preparation of C

[0020] 2 g Ti with a particle size of 500 mesh 2 Submerge the AlC powder in 40 ml of the fluoride salt solution in step (1), stir at 40°C for 48 h, pour it into a centrifuge tube, and centrifuge the mixed solution at a speed of 6000 rpm. Afte...

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Abstract

The invention discloses application of two-dimensional crystal compound Ti2C in adsorption and decomposition of methane in low-concentration gas as adsorbent. The two-dimensional crystal compound Ti2C has a two-dimensional layered structure similar to that of graphene and is composed of titanium atoms on the upper surface and the lower surface and a carbon atom layer in the middle. The material has a high specific surface area and high optical catalytic performance. Methane molecules in low-concentration gas can be adsorbed, and adsorbed methane molecules can not enter the environment again when the pressure intensity of methane is decreased. By means of the optical catalytic performance of the material, harmful methane can be decomposed into harmless carbon dioxide and water. The novel adsorption and decomposition material provides a new effective path for harmless processing of low-concentration gas.

Description

technical field [0001] The invention belongs to the field of new environmental protection materials, in particular to a two-dimensional crystal compound Ti 2 Application of C as an adsorbent in the adsorption and decomposition of methane in low-concentration gas. Background technique [0002] Gas is a combustible gas produced by organic matter during coalification and stored in coal seams and surrounding rocks in an adsorbed state. Its main component is methane, and its chemical formula is CH 4 , Methane is a harmful gas that threatens the safety of coal mines. Although pure methane gas is a clean energy source, it cannot be effectively utilized due to the low concentration of methane in a large amount of coal mine gas. The low-concentration gas that exists in large quantities stays in mines, and if enriched to a certain extent, it will cause great harm to the safe production of coal mines. If released into the atmosphere, methane is a very harmful greenhouse gas, 25 time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/72B01J20/02B01J27/22
CPCB01D53/72B01D53/8671B01D2255/20707B01D2255/802B01J20/0211B01J20/0274B01J27/22B01J35/004
Inventor 周爱国刘凡凡刘宝忠胡前库王李波
Owner HENAN POLYTECHNIC UNIV