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Catalyst for carbon dioxide plasma decomposition and preparation method thereof, catalytic system for carbon dioxide plasma decomposition and application thereof

A carbon dioxide and catalytic system technology, applied in the field of ion decomposition, can solve problems such as low energy efficiency and the influence of discharge power

Active Publication Date: 2018-05-15
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conversion rate of low-temperature plasma decomposition of carbon dioxide is affected by the discharge power. To obtain a higher conversion rate of carbon dioxide, the discharge power must be increased, which will inevitably lead to low energy efficiency and limit the application of plasma in the decomposition of carbon dioxide.

Method used

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  • Catalyst for carbon dioxide plasma decomposition and preparation method thereof, catalytic system for carbon dioxide plasma decomposition and application thereof
  • Catalyst for carbon dioxide plasma decomposition and preparation method thereof, catalytic system for carbon dioxide plasma decomposition and application thereof
  • Catalyst for carbon dioxide plasma decomposition and preparation method thereof, catalytic system for carbon dioxide plasma decomposition and application thereof

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preparation example Construction

[0031] The present invention also provides a method for preparing the catalyst for carbon dioxide plasma decomposition of the aforementioned technical solution, which includes the following steps:

[0032] (1) Immerse the spherical support in a non-precious metal salt solution to obtain a catalyst precursor; the immersion time is 0.5-2h;

[0033] The mass of the non-precious metal ions in the non-precious metal salt solution is based on the mass of the corresponding oxide, and the mass of the non-precious metal oxide is 1-40% of the mass of the spherical carrier after drying;

[0034] (2) After drying the catalyst precursor obtained in the step (1), discharge treatment is performed in an argon atmosphere to obtain a catalyst for carbon dioxide plasma decomposition.

[0035] In the present invention, the spherical carrier is impregnated in a non-precious metal salt solution to obtain a catalyst precursor. The spherical carrier is preferably obtained by drying the raw material of the sp...

Embodiment 1

[0059] Take 15g of alumina pellets, the diameter of the spherical alumina is about 2~3mm, and then pretreat it in an oven at 110℃ for 3h; obtain alumina pellets for use;

[0060] According to the mass of molybdenum oxide in the formed catalyst as 10% of the carrier mass, prepare a certain concentration of ammonium molybdate solution; immerse the alumina pellets in the solution for 1 h, and then dry overnight at 120°C. In an Ar atmosphere, control 50W Discharge input power and discharge treatment for 1 hour to obtain a catalyst. The prepared catalyst is subjected to XRD analysis. The results are as follows figure 2 Shown by figure 2 It can be seen that the obtained catalyst is 10% MoO 3 / Al 2 O 3 , Namely MoO 3 It is 10% of the total mass of the catalyst, and non-noble metals exist in the form of oxides on the surface of the spherical support.

[0061] according to figure 1 A wire barrel type dielectric barrier discharge plasma reactor is provided in which the barrel of the reactor...

Embodiment 2

[0065] The catalyst was prepared according to the method of Example 1. The difference is that the impregnating liquid used in the impregnation process is a cobalt nitrate solution, and the concentration of the solution is prepared according to the mass of cobalt oxide in the shaped catalyst as 5% of the carrier mass, and the impregnation time is 1h to obtain the catalyst. XRD analysis of the prepared catalyst shows that the obtained catalyst is 5% Co 2 O 3 / Al 2 O 3 .

[0066] The plasma reactor is provided according to the method of Example 1 and used for the decomposition of carbon dioxide. The difference is that the effective power of the discharge is 7.0W.

[0067] Analyzing the outflowing gas by gas chromatography, it can be determined that after the carbon dioxide flows through the plasma reactor, it is decomposed into carbon monoxide and oxygen.

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Abstract

The invention provides a catalyst for carbon dioxide plasma decomposition and a preparation method thereof. The catalyst is prepared from a spherical carrier and a non-noble metal oxide loaded on thespherical carrier, wherein the spherical carrier contains one or more of aluminum oxide, titanium oxide, 13X molecular sieve and silicon oxide; the mass of the non-noble metal oxide is 1 to 40 percentof the mass of the spherical carrier. The invention further provides a catalytic system of carbon dioxide plasma decomposition and application thereof. The system is filled with the catalyst providedby the invention, and the catalyst adapts to plasma, thereby effectively reducing the activation energy barrier of the plasma, and increasing the energy efficiency in a carbon dioxide plasma decomposition process. The result of the embodiment shows that the conversion rate of carbon dioxide is up to 25 percent and the energy efficiency is up to 25 percent when the catalyst provided by the invention is applied to a carbon dioxide plasma decomposition system.

Description

Technical field [0001] The invention belongs to the technical field of carbon dioxide plasma decomposition, and in particular relates to a catalyst for carbon dioxide plasma decomposition and a preparation method thereof, a catalytic system for carbon dioxide plasma decomposition and its application. Background technique [0002] With the continuous development of industry, the consumption of fossil energy is increasing, and carbon dioxide emissions are increasing rapidly. As we all know, as a greenhouse gas, the increase in carbon dioxide emissions will cause global warming and cause a series of ecological problems. Carbon dioxide is not only a greenhouse gas, but also a valuable carbon resource. It is called "the new carbon source of the 21st century": It is estimated that the carbon content of carbon dioxide on the earth is fossil fuels such as coal, oil and natural gas. Ten times the carbon content. Whether from the perspective of the full utilization of carbon resources or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/28B01J23/75B01J23/882B01J23/745B01J23/72B01J23/755B01J29/16B01D53/86B01D53/62
CPCB01D53/62B01D53/86B01D2257/504B01D2259/818B01J23/002B01J23/28B01J23/72B01J23/745B01J23/75B01J23/755B01J23/882B01J29/163B01J2229/18B01J2523/00B01J2523/68B01J2523/845B01J2523/31B01J2523/47B01J2523/41Y02A50/20
Inventor 陈秉辉曹佃宇郑进保李小飞张诺伟叶松寿
Owner XIAMEN UNIV
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