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Iron carbon-based composite porous material catalyst and preparation method and application thereof

A technology for porous materials and catalysts, which is applied in the field of iron-carbon-based composite porous material catalysts and their preparation, can solve the problems of fast deactivation of catalysts, etc., and achieves the advantages of simple and easy synthesis process, prevention of roasting and agglomeration, and good support and isolation. Effect

Active Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the reaction proceeds, the catalyst deactivates rapidly

Method used

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  • Iron carbon-based composite porous material catalyst and preparation method and application thereof
  • Iron carbon-based composite porous material catalyst and preparation method and application thereof
  • Iron carbon-based composite porous material catalyst and preparation method and application thereof

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preparation example Construction

[0032] The present invention also provides the preparation method of above-mentioned catalyst, and this method comprises the following steps:

[0033] (1) dissolving iron source and carbon source in an organic solvent to carry out one or more hydrothermal synthesis reactions;

[0034] (2) centrifuging the product obtained in step (1), and then drying the product after centrifuging;

[0035] (3) high-temperature carbonization of the product obtained in step (2);

[0036] Wherein, the iron source contains Fe and optional M, and M is one or more of Mn, K, Na, S, Cu and Zn.

[0037] According to the present invention, wherein, in step (1), the iron source and the carbon source are dissolved in an organic solvent to carry out one or more hydrothermal synthesis reactions, specifically, in the present invention, when the iron source only contains When iron is a metal element, the iron source and carbon source are dissolved in an organic solvent to carry out a hydrothermal synthesis...

Embodiment 1

[0051] This example is used to illustrate the preparation method of the iron-carbon based composite porous material catalyst according to the present invention.

[0052] FeCl 3 ·6H 2 O (0.374g), terephthalic acid (0.230g) were dissolved in N,N-dimethylformamide DMF (50mL) solvent, stirred at a stirring rate of 800 rpm until the solution became clear, and then The mixed solution was transferred to a hydrothermal kettle, and then the hydrothermal kettle was put into an oven, and the hydrothermal synthesis reaction was carried out at a temperature of 120° C. for 3 days;

[0053] After the reaction, the hydrothermal kettle was naturally cooled to room temperature, and the product after the hydrothermal synthesis reaction was centrifuged, then washed and filtered with DMF solvent and ethanol, and then dried in a vacuum oven at a temperature of 80°C for 12 hours; the result was metal Organic framework materials, the SEM photos of which are as follows figure 1 As shown, it can be ...

Embodiment 2

[0059] This example is used to illustrate the preparation method of the iron-carbon based composite porous material catalyst according to the present invention.

[0060] FeCl 3 ·6H 2 O (0.804g), Mn (NO 3 ) 2 ·6H 2 O (0.403g), terephthalic acid (H 2 bdc; 0.752 g) was dissolved in DMF (10 mL) solvent and stirred at a stirring rate of 1000 rpm until the solution became clear. Then add NaOH solution (0.4mol / L, 10mL) and continue to stir for 15min, then transfer the mixed solution to a hydrothermal kettle, then put the hydrothermal kettle into an oven, and carry out the hydrothermal synthesis reaction at a temperature of 100°C 15 hours;

[0061] After the reaction, the hydrothermal kettle was naturally cooled to room temperature, and the product after the hydrothermal synthesis reaction was centrifuged, then washed and filtered with DMF solvent, and then dried in a vacuum oven at 70°C for 12 hours; further KOH (0.2g ) was dissolved in 50ml of deionized water, the above cryst...

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Abstract

The invention relates to the field of catalyst preparation, and discloses an iron carbon-based composite porous material catalyst and a preparation method thereof, and an application of the iron carbon-based composite porous material catalyst for directly preparing low carbon olefins by using synthetic gas, wherein the catalyst contains a material with carbon element and an iron component, the iron component is Fe and / or Fe-M nano particle, the material with carbon element forms a coating on the iron component, by taking the total weight of the catalyst as a reference, the iron component content is 10-80 wt%, and the content of the material with carbon element is 20-90 wt%; wherein M is one or more of Mn, K, Na, S, Cu and Zn. The porous material with carbon element in the catalyst has better support and isolation effects for the iron nano particles, and can prevent further roasting and agglomeration under high temperature condition.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to an iron-carbon-based composite porous material catalyst and a preparation method thereof, and the application of the iron-carbon-based composite porous material catalyst in the field of direct preparation of low-carbon olefins by using synthesis gas. Background technique [0002] Ethylene is the most important basic organic chemical raw material, and its production has been dependent on the petroleum cracking route for a long time. In recent years, the price of crude oil has continued to run at a high level, which has triggered an increase in the price of ethylene cracking raw materials. At the same time, the shortage of ethylene cracking raw materials is also very prominent. Faced with this situation, all countries in the world are adjusting the energy utilization structure and constantly looking for new ethylene production routes. [0003] In recent years, due t...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J23/889B01J27/02B01J35/10C07C1/04C07C11/02
Inventor 冯英杰姜健准张明森
Owner CHINA PETROLEUM & CHEM CORP
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