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A kind of supported catalyst and its preparation method and application and Fischer-Tropsch synthesis method

A supported catalyst, Fischer-Tropsch synthesis technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. Effect

Active Publication Date: 2020-06-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can improve the activity of the catalyst under the condition of low metal content to a certain extent, the activity of the catalyst still needs to be further improved.

Method used

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  • A kind of supported catalyst and its preparation method and application and Fischer-Tropsch synthesis method
  • A kind of supported catalyst and its preparation method and application and Fischer-Tropsch synthesis method
  • A kind of supported catalyst and its preparation method and application and Fischer-Tropsch synthesis method

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preparation example Construction

[0027] According to another aspect of the present invention, the present invention also provides a kind of preparation method of supported catalyst, and this preparation method comprises the following steps:

[0028] (1) Use the first metal component M containing at least one non-noble metal selected from Group VIII 1 The solution of the compound impregnated the support, and then the impregnated support was sequentially dried, roasted or not roasted, and reduced to activate;

[0029] (2) Under a reducing or inert atmosphere, the product obtained in step (1) is impregnated with a solution containing a high-boiling organic matter and then heat-treated to obtain a carbon-containing catalyst precursor;

[0030] (3) impregnating the carbon-containing catalyst precursor obtained in step (2) with a solution containing a compound selected from VIB and / or a second metal component of Group VIIB in a reducing atmosphere, drying and optionally calcining, to obtain The supported catalyst....

Embodiment 1

[0054] (1) Catalyst preparation and characterization

[0055] According to the required metal salt content of equal-volume impregnation method, 36.1 milliliters of cobalt nitrate containing 208 grams per liter of cobalt and 1.38 grams per liter of platinum and the impregnation solution of platinum dichlorotetraammine were prepared. Decant the impregnation solution to 42.5 g SiO 2 Carrier (Fuji Silicon Co., Ltd., Japan, average particle size 40-80 microns), stirred at 20°C for 4 hours, dried at 120°C, calcined at 400°C for 4 hours, hydrogen reduction at 400°C for 4 hours, hydrogen pressure of 0.1 MPa. After reduction, it was lowered to room temperature, and 36.1 ml of 14.5 g / L sucrose aqueous solution was added under a hydrogen atmosphere. After standing for 2 hours, it was dried at 120°C and then heated at 500°C for dehydration and carbonization. Cool down to room temperature, and add 55.1 ml of ammonium metatungstate aqueous solution containing 9.07 g / L tungsten under a hyd...

Embodiment 2

[0077] (1) Catalyst preparation and characterization

[0078] According to the required metal salt content of equal-volume impregnation method, 36.1 milliliters of cobalt nitrate containing 208 grams per liter of cobalt and 1.38 grams per liter of platinum and the impregnation solution of platinum dichlorotetraammine were prepared. Decant the impregnation solution to 42.5 g SiO 2 Carrier (Fuji Silicon Co., Ltd., Japan, average particle size 40-80 microns), stirred at 20°C for 4 hours, dried at 120°C, calcined at 400°C for 4 hours, hydrogen reduction at 400°C for 4 hours, hydrogen pressure of 0.1 MPa. After reduction, it was lowered to room temperature, and 36.1 ml of 15.3 g / L glucose aqueous solution was added under a hydrogen atmosphere, and after standing for 2 hours, it was dried at 120°C and then heated at 500°C for dehydration and carbonization. Cool down to room temperature, and add 55.1 ml of ammonium molybdate aqueous solution containing 4.54 g / L of molybdenum under ...

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Abstract

The invention discloses a supported catalyst and a preparation method and application thereof, and a Fischer-Tropsch synthesis method. The catalyst comprises a carrier and further comprises a carbon component and active metal components loaded on the carrier, wherein the active metal components are composed of at least one first metal component M<1> selected from the group-VIII non-noble metals and at least one second metal component M<2> selected from the group-VIB and / or group-VIIB metals. The catalyst satisfies the equation that (M<2> / M<1>)<XPS> / (M<2> / M<1>)<XRF> = 2.0 to 20.0, wherein (M<2> / M<1>)<XPS> is a weight ratio, in terms of element, of the second metal component to the first metal component in the catalyst characterized by X-ray photoelectron spectroscopy, and (M<2> / M<1>)<XRF> is a weight ratio, in terms of element, of the second metal component to the first metal component in the catalyst characterized by X-ray fluorescence spectroscopy. Compared with catalysts prepared inthe prior art, the supported catalyst of the invention is significantly improved in selectivity of isomers of a product on the premise of maintaining high Fischer-Tropsch reactivity and high C<5+> selectivity.

Description

technical field [0001] The invention relates to a supported catalyst, its preparation method and application, and a Fischer-Tropsch synthesis method. Background technique [0002] In today's rapidly turbulent international energy situation and fierce competition in energy supply and demand, further efficient and clean utilization of coal and natural gas resources is of great strategic significance. Hydrocarbons produced based on technologies such as Fischer-Tropsch synthesis have excellent performance and can be used directly or mixed with fuel produced from low-quality crude oil to meet the increasingly stringent requirements for environmental protection and oil performance indicators. At present, Sasol Company in South Africa and Shell Company in the United Kingdom / Netherlands have mastered the world's leading Fischer-Tropsch industrial synthetic oil technology, and the reactors they use include tubular fixed bed and slurry bed. Sasol's Oryx plant in Qatar is the world's ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/00B01J23/89B01J37/02C10G2/00
CPCB01J23/00B01J23/002B01J23/8993B01J37/0207C10G2/333C10G2300/70
Inventor 郑仁垟李明丰夏国富李会峰侯朝鹏吴玉晋超徐润
Owner CHINA PETROLEUM & CHEM CORP
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