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Fischer-Tropsch synthesis catalyst, its preparation and application

A Fischer-Tropsch synthesis and catalyst technology, which is applied in the preparation of liquid hydrocarbon mixtures, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of high selectivity and low activity of methane, Achieve the effect of high activity and selectivity, high wear resistance

Active Publication Date: 2013-07-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the catalyst thus prepared also has the disadvantages of low activity and high methane selectivity

Method used

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  • Fischer-Tropsch synthesis catalyst, its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] This example illustrates the catalyst provided by the present invention, its preparation and its performance.

[0067] (1) Silicon and divalent metal component surface modification carrier and its preparation

[0068] Add 14.8 g of ethyl orthosilicate to 150 mL of cyclohexane, and dissolve to obtain a Si solution. With 100g gamma-alumina (Sasol product, average particle diameter 55 microns, specific surface area 150 meters 2 / g, pore volume 0.45 ml / g) was added to the above solution and stirred continuously for 1h. After filtering, the filter cake was dried in an oven at 140° C. for 6 hours.

[0069] Add 15.62g of zinc nitrate hexahydrate into 100mL of water, and dissolve to obtain a Zn solution. Add 100 g of the above Si-modified alumina into the Zn solution and stir continuously for 1 h, then filter, put the filter cake in an oven at 140° C. for 6 hours, and bake at 600° C. for 2 h. A silicon- and zinc-modified alumina support was obtained, calculated as elements ...

Embodiment 2

[0098] This example illustrates the catalyst, preparation and performance of the catalyst supported by silicon and cobalt surface-modified alumina.

[0099] (1) Carrier and its preparation

[0100] Add 9.9 g of ethyl orthosilicate to 150 mL of cyclohexane, and dissolve to obtain a Si solution. 100g gamma-alumina (Sasol product, average particle size 55 microns, specific surface area 150 m 2 / g, pore volume 0.45 ml / g) was added to the above solution and stirred continuously for 1h. After filtering, the filter cake was dried in an oven at 180° C. for 1 hour.

[0101] Add 15.28 g of cobalt nitrate hexahydrate into 100 mL of water, and dissolve to obtain a Co solution. Add 100 g of the above-mentioned Si-modified alumina into the Co solution and stir continuously for 1 h, then filter, put the filter cake in an oven at 180° C. for 2 hours, and bake at 800° C. for 2 h. A silica- and cobalt-modified alumina support is obtained, calculated as elements and based on the support, the...

Embodiment 3

[0107]This example illustrates the catalyst, preparation and performance of the catalyst with silicon and Ni surface-modified alumina as the carrier.

[0108] (1) Carrier and its preparation

[0109] Add 19.8 g of ethyl orthosilicate to 150 mL of cyclohexane, and dissolve to obtain a Si solution. 100g gamma-alumina (Sasol product, average particle size 55 microns, specific surface area 150 m 2 / g, pore volume 0.45 ml / g) was added to the above solution and stirred continuously for 1h. After filtering, the filter cake was dried in an oven at 180° C. for 1 hour.

[0110] Add 15.27 g of nickel nitrate hexahydrate into 100 mL of water, and dissolve to obtain a Ni solution. Add 100 g of the above-mentioned Si-modified alumina to the Ni solution and stir continuously for 1 h, then filter, put the filter cake in an oven at 160° C. for 2 hours, and bake at 700° C. for 2 h. A silicon and nickel-modified alumina support was obtained. In terms of elements and based on the support, the...

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Abstract

The invention relates to a Fischer-Tropsch synthesis catalyst, its preparation and application. The catalyst contains a carrier and an active metal component that is loaded on the carrier and is selected from iron and / or cobalt. The catalyst is characterized in that, the carrier is a surface modified porous heatproof inorganic oxide molded carrier composed of silicon and one or more divalent metal components selected from the IIA group, the VIII group, the IB group and the IIB group. In terms of elements and based on the carrier, the content of silicon is 0.3-3.5 wt%, and the content of the divalent metal components is 0.2-2.0 wt%. Compared with the prior art, the catalyst provided in the invention has high wear resistance, and also has high activity and selectivity at the same time.

Description

field of invention [0001] The invention relates to a Fischer-Tropsch synthesis catalyst and its preparation and application. Background technique [0002] Fischer-Tropsch synthesis refers to the reaction in which synthesis gas is converted into hydrocarbons on a catalyst. The products include alkanes and olefins, which can be processed to produce high-quality liquid fuels, such as high-quality diesel oil and aviation kerosene. As global oil resources become more and more scarce and crude oil prices fluctuate day by day, people pay more and more attention to environmental protection. The use of coal and natural gas to produce hydrocarbon products such as clean fuels through Fischer-Tropsch synthesis has attracted more and more attention. [0003] Commonly used commercial Fischer-Tropsch synthesis catalysts are cobalt-based and iron-based. Compared with iron-based catalysts, cobalt-based catalysts have the advantages of long life and low water vapor shift activity, but iron-...

Claims

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Application Information

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IPC IPC(8): B01J23/89C10G2/00
Inventor 吴玉夏国富王奎孙霞孟祥堃张晓昕李明丰聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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