Iron-based Fischer-Tropsch synthesis catalyst and preparation method thereof

A technology for synthesis of catalysts and tropes, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc., can solve problems such as increasing catalyst production costs

Inactive Publication Date: 2020-09-15
鲍周艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the catalyst has high catalytic activity, the production cost o

Method used

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  • Iron-based Fischer-Tropsch synthesis catalyst and preparation method thereof
  • Iron-based Fischer-Tropsch synthesis catalyst and preparation method thereof

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Example Embodiment

[0024] Example 1

[0025] An iron-based Fischer-Tropsch synthesis catalyst, prepared by the following method:

[0026] Step 1: Disperse iron ferric oxide in deionized water, add citric acid, heat up to 80°C and stir until iron ferric oxide is completely dissolved, cool and filter out insoluble impurities, add ammonia water to the filtrate to adjust acidity and alkalinity after filtration , so that the pH is 3, then continue to stir for 3 hours after raising the temperature to 85°C to form an iron citrate complex and set aside;

[0027] Step 2: Disperse nano-polyacrylamide in deionized water, add tryptophan, heat up to 90°C, stir for 2 hours to form a modified nano-polyacrylamide gel, cool for later use;

[0028] Step 3: Add the ferric citrate complex prepared in step 1 to the gel obtained in step 2, raise the temperature to 60°C, and stir at high speed for 0.5h to obtain an iron-loaded gel, and place the obtained gel at 120°C dried in a vacuum oven;

[0029] Step 4: Place t...

Example Embodiment

[0034] Example 2

[0035] An iron-based Fischer-Tropsch synthesis catalyst, prepared by the following method:

[0036] Step 1: Disperse iron ferric oxide in deionized water, add citric acid, heat up to 80°C and stir until iron ferric oxide is completely dissolved, cool and filter out insoluble impurities, add ammonia water to the filtrate to adjust acidity and alkalinity after filtration , so that the pH was 3.5, then heated up to 85°C and continued to stir for 3 hours to form an iron citrate complex for use;

[0037] Step 2: Disperse nano-polyacrylamide in deionized water, add alanine, heat up to 90°C, stir for 2 hours to form a modified nano-polyacrylamide gel, and cool it for later use;

[0038] Step 3: Add the ferric citrate complex prepared in step 1 to the gel obtained in step 2, raise the temperature to 60°C, and stir at high speed for 0.5h to obtain an iron-loaded gel, and place the obtained gel at 120°C dried in a vacuum oven;

[0039] Step 4: Place the completely ...

Example Embodiment

[0043] Example 3

[0044] An iron-based Fischer-Tropsch synthesis catalyst, prepared by the following method:

[0045] Step 1: Disperse iron oxide in deionized water, add citric acid, heat up to 80°C and stir until ferric oxide is completely dissolved, cool and filter out insoluble impurities, and add ammonia water to the filtrate to adjust acidity and alkalinity after filtration. The pH is 4, then the temperature is raised to 85°C, and the stirring is continued for 3 hours to form an iron citrate complex, which is ready for use;

[0046] Step 2: Disperse nano-polyacrylamide in deionized water, add leucine, raise the temperature to 90°C, stir for 2 hours to form a modified nano-polyacrylamide gel, cool for later use;

[0047] Step 3: Add the ferric citrate complex prepared in step 1 to the gel obtained in step 2, raise the temperature to 60°C, and stir at high speed for 0.5h to obtain an iron-loaded gel, and place the obtained gel at 120°C dried in a vacuum oven;

[0048] Ste...

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Abstract

An iron-based Fischer-Tropsch synthesis catalyst is prepared from 20 to 30 percent of metal iron and the balance of carbon. The carbon is prepared from nano polyacrylamide, citric acid and amino acid.The preparation method of the iron-based Fischer-Tropsch synthesis catalyst comprises the following steps of: 1, formation of an iron citrate complex; 2, formation of amino acid modified nano polyacrylamide gel; 3, formation of gel loaded with iron; and 4, preparation of the iron-based Fischer-Tropsch synthesis catalyst. The iron-based Fischer-Tropsch synthesis catalyst has the characteristics ofgood sintering resistance and high stability.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to an iron-based Fischer-Tropsch synthesis catalyst and a preparation method thereof. Background technique [0002] Fischer-Tropsch synthesis (FTS for short) was first proposed by German scientists Fischer and Tropsch in 1923. They used alkali-added iron filings as a catalyst to catalytically convert syngas to liquid fuels. In addition to oxygenates, they synthesized a measurable amount of higher hydrocarbons for the first time. Since then, this process has been called a process named after the two scientists. Fischer-Tropsch synthesis reaction. The Fischer-Tropsch synthesis reaction refers to the process of producing synthesis gas from carbon-containing resources such as coal, biomass, and natural gas, and then catalytically converting the synthesis gas into clean liquid fuels and low-carbon olefins under catalysts and certain reaction conditions. This response not only allev...

Claims

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Application Information

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IPC IPC(8): B01J27/24C10G2/00
CPCB01J27/24C10G2/332
Inventor 鲍周艳
Owner 鲍周艳
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