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Methane dry reforming catalyst, preparation method and use of methane dry reforming catalyst and method for preparing synthetic gas through methane dry reforming

A methane dry reforming and catalyst technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as failure to realize industrial application, and achieve catalytic The effect of improving the activity and anti-coke performance and improving the dispersion degree

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the methane dry reforming reaction has been studied for nearly a hundred years, the process has not been industrialized so far. The reason is that the sintering and carbon deposition of the catalyst under high temperature reaction conditions are the most restrictive factors for the industrialization of the process. The main obstacle, especially carbon deposition on the catalyst under pressurized conditions is particularly prominent

Method used

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  • Methane dry reforming catalyst, preparation method and use of methane dry reforming catalyst and method for preparing synthetic gas through methane dry reforming
  • Methane dry reforming catalyst, preparation method and use of methane dry reforming catalyst and method for preparing synthetic gas through methane dry reforming
  • Methane dry reforming catalyst, preparation method and use of methane dry reforming catalyst and method for preparing synthetic gas through methane dry reforming

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preparation example Construction

[0049] Compared with the prior art, the preparation method of the methane dry reforming catalyst provided by the invention has the advantages of:

[0050] 1. By adding a surfactant to the impregnation solution to reduce the surface tension of water, it is beneficial to the spreading of the impregnation solution on the surface of the carrier, thereby facilitating the dispersion of the metal active component on the surface of the support, and finally making the metal active group in the prepared catalyst The fraction has higher dispersion and smaller grain size.

[0051] 2. It is prepared by the impregnation method, the preparation method is simple, the preparation conditions are easy to accurately control, and the repeatability of the catalyst is very good.

[0052] 3. It is prepared by the impregnation method, so the mechanical strength of the carrier is maintained, and it has high activity and stability no matter in the fluidized bed reactor or in the fixed bed reactor.

[0...

Embodiment 1

[0062] (1) Catalyst preparation

[0063] 1.765g of Ni(NO 3 ) 2 ·6H 2 O was dissolved in 5.6ml of deionized water to obtain a nickel nitrate solution, and after it was dissolved, 0.34g of P123 was added and mixed evenly to obtain an impregnating solution. Take 4g of Al 2 o 3 The carrier is dispersed into the impregnation solution, and after standing for 2 hours, the moisture is evaporated, and then dried in an oven at 120°C for 10 hours. The dried sample was calcined in a muffle furnace at 600°C for 3 hours, and the obtained catalyst was recorded as NiO / Al 2 o 3 -1, the content of the metal active component in terms of metal elements is 8% by weight. The dispersion degree of the metal active component in the catalyst measured by the hydrogen chemical adsorption method is 14.4%, and the average particle diameter of the metal active component is 7.0nm.

[0064] (2) Catalyst evaluation

[0065] Weigh the above NiO / Al 2 o 3-1 Catalyst 0.1g, diluted to 2ml with 40-60 mesh...

Embodiment 2

[0074] (1) Catalyst preparation

[0075] 1.75g ​​of Co(NO 3 ) 2 ·6H 2 O was dissolved in 4ml of deionized water to obtain an aqueous solution of cobalt nitrate. After the solution was clear, 0.33g of P123 was added, and mixed evenly to obtain an impregnation solution. All the other steps are with the preparation method of corresponding catalyst in embodiment 1, and gained catalyst is denoted as Co 3 o 4 / Al 2 o 3 , the content of the metal active component in terms of metal elements is 8% by weight. The dispersion degree of the metal active components in the catalyst measured by the hydrogen chemical adsorption method is 13.9%, and the average particle diameter of the metal active components is 7.2nm.

[0076] (2) Catalyst evaluation

[0077] Activating the catalyst under the same conditions as in Example 1 and carrying out the methane dry reforming reaction, the reaction was stably carried out after 10 hours and the reaction results were as follows:

[0078] x CH4 =...

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Abstract

The invention relates to a methane dry reforming catalyst and a preparation method thereof. The preparation method comprises immersion of a carrier in an immersion solution, drying and roasting. The immersion solution contains a soluble compound of a metal active ingredient and a surfactant. The catalyst active metal crystal grains have small sizes and high dispersity. The preparation method has simple processes, a low equipment investment and low energy consumption. Compared with the same type of the existing catalyst, the catalyst obtained through the preparation method has higher catalytic reaction activity and better carbon deposition resistance and lays a foundation for the industrial application of methane dry reforming preparation of synthetic gas.

Description

technical field [0001] The invention relates to a methane dry reforming catalyst, its preparation method and application, and a method for preparing synthesis gas from methane dry reforming. Background technique [0002] With the gradual increase of world energy consumption, CO 2 , NO x The discharge of environmental pollutants such as dust and particulate matter is also increasing year by year, especially CO 2 The emission of greenhouse gases such as greenhouse gases has led to a sharp deterioration of the global climate, posing a great threat to the living environment of human beings. The International Energy Agency (IEA) "World Energy Outlook 2007" statistics show that in 2005 the world emitted CO through the consumption of oil, natural gas and coal and the flaring of natural gas. 2 The total amount reaches 270×l0 8 Ton. Among them, the United States, China, Russia, Japan and India are the five largest CO 2 emitters, accounting for the world's CO 2 50% of the total...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/75C01B3/40
CPCY02P20/52
Inventor 张荣俊夏国富李明丰侯朝鹏阎振楠聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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