Co-based fischer-tropsch synthesis catalyst and method for preparing the same

A technology for catalyst and Tropsch synthesis, applied in the field of cobalt-based Fischer-Tropsch synthesis catalyst and its preparation, can solve the problems of poor performance and complex catalyst preparation methods, and achieve the effect of simple method, improved activity and selectivity

Active Publication Date: 2008-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide a simple and efficient preparation method of cobalt-based catalysts and a catalyst with excellent performance in view of the shortcomings of existing catalysts with complex preparation methods and poor performance.

Method used

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Examples

Experimental program
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preparation example Construction

[0019] Selected from Li, Na, K, Mg, Ca, Sr, Cu, Mo, Ta, W, Ru, Zr, Ti, REO, Re, Hf, Ce, Mn, Fe, V and noble metals (such as Pt, Pd, Rh , Ir, etc.) in one or more additive components, is known in the art commonly used in Fischer-Tropsch synthesis catalyst additive components. The catalyst according to the present invention preferably contains one or more selected from the above auxiliary components. When the catalyst contains the above auxiliary components, the preparation method of the catalyst further includes the step of introducing the auxiliary components into the catalyst. They may be introduced before or after the cobalt metal component, or simultaneously with the cobalt metal component. When the auxiliary components are introduced alone, the present invention has no limitation on the introduction method of the auxiliary. For example, the compound containing auxiliary components is formulated into an aqueous solution, and then impregnated by a conventional impregnation...

Embodiment 1

[0032] This example illustrates the method provided by the invention and the catalyst prepared therefrom.

[0033] Weigh the γ-Al after comparative example 1 roasting 2 o 3 Carrier 30 grams, get 5.5 grams of cobalt nitrate and dissolve into the solution of 8.1 milliliters, under agitation, this solution adopts spray method to spray on described carrier (V L / V C =0.3), then baked at 120° C. for 4 hours in an oven, followed by sintering at 500° C. for 4 hours in a muffle furnace, and repeated the operation three times to obtain catalyst C1. The composition of C1 is listed in Table 1.

Embodiment 2

[0035] This example illustrates the method provided by the invention and the catalyst prepared therefrom.

[0036] Weigh the γ-Al after comparative example 1 roasting 2 o 3 Carrier 30 grams, get 8.3 grams cobalt nitrate and dissolve into the solution of 13.5 milliliters, under agitation, this solution adopts spray method to spray on above-mentioned carrier (V L / V C =0.5), then baked at 120° C. for 4 hours in an oven, followed by sintering at 500° C. for 4 hours in a muffle furnace, and repeated the operation twice to obtain catalyst C2. The composition of C2 is listed in Table 1.

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PUM

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Abstract

The present invention is cobalt-base catalyst for Fischer-Tropsch process and its preparation process. The catalyst containing cobalt metal component in an effective amount and carrier is prepared through one dipping carrier in solution containing cobalt metal component with the ratio between the immersion liquid volume VL and the carrier pore volume VC meeting the relationship of VL/VC=0.01-0.99. The catalyst of the present invention has high reaction activity and high C5+ selectivity.

Description

technical field [0001] The invention relates to a Fischer-Tropsch synthesis catalyst and a preparation method thereof, in particular to a cobalt-based Fischer-Tropsch synthesis catalyst and a preparation method thereof. Background technique [0002] Fischer-Tropsch synthesis refers to the conversion of synthesis gas (a mixture of carbon monoxide and hydrogen) into hydrocarbons in the presence of a catalyst. There are many catalysts suitable for the Fischer-Tropsch synthesis reaction, and these catalysts generally contain a metal component selected from Group VIII of the periodic table of elements and an inert support. Among them, the cobalt-based Fischer-Tropsch synthesis catalyst has high activity, C 5 + With high selectivity, it is a commonly used catalyst in Fischer-Tropsch synthesis. [0003] In addition, it has been noticed that the heavy paraffin wax synthesized by FT is usually attached to the surface of the catalyst in the form of liquid, aerosol or slurry, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J23/89B01J21/04C07C1/04
Inventor 侯朝鹏孙霞王倩夏国富李明丰聂红门卓武李大东吴昊
Owner CHINA PETROLEUM & CHEM CORP
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