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Method for preparing high-activity high-stability catalyst for Fischer-Tropsch synthesis reaction

A high-stability, Tropsch synthesis technology, applied in catalyst activation/preparation, preparation of liquid hydrocarbon mixture, chemical instruments and methods, etc., can solve problems such as easy sintering and poor stability, achieve improved stability, wide application range, The effect of simple operation process

Pending Publication Date: 2020-01-03
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the deficiencies in the existing traditional oxide-supported cobalt-based catalysts, the purpose of the present invention is to provide a cobalt-based catalyst that does not need to add noble metal additives, is simple and controllable, saves energy consumption, and can obtain high catalytic activity and stability. The preparation method of the catalyst for Fischer-Tropsch synthesis, through the combination of glow discharge plasma technology and carbon nitrogen layer support, solves the technical problems of poor stability and easy sintering of the existing catalyst FTS reaction

Method used

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  • Method for preparing high-activity high-stability catalyst for Fischer-Tropsch synthesis reaction
  • Method for preparing high-activity high-stability catalyst for Fischer-Tropsch synthesis reaction
  • Method for preparing high-activity high-stability catalyst for Fischer-Tropsch synthesis reaction

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Embodiment 1

[0034] A high activity and high stability Co / TiO for Fischer-Tropsch synthesis 2 The preparation method of @CN catalyst, its steps are as follows:

[0035] (1) Carrier TiO 2 Synthesis of @CN: Weigh TiO of equal mass 2 Powder and urea, the saturated aqueous solution of urea and TiO 2 The powder was mixed under stirring for 30 minutes to make it evenly mixed, and then the mixed material was dried in an oven at 100°C for 12 hours, and the sample was taken out and pulverized after cooling to room temperature; finally, the pulverized sample was placed in a muffle furnace for 15 ℃·min -1 The heating rate was heated to 550°C, and then kept at 550°C for 2h. After cooling to room temperature, the sample was taken out to obtain milky yellow powder-carrier TiO 2 @CN;

[0036] (2) Preparation of Co / TiO by equal volume impregnation method 2 @CN: The catalyst crude product was prepared according to the equal volume impregnation method, in which the cobalt mass accounted for the carrie...

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Abstract

The invention relates to the technical field of nano-catalysts and particularly relates to a method for preparing a high-activity high-stability catalyst for a Fischer-Tropsch synthesis reaction. According to the preparation method disclosed by the invention, the surface of an inorganic oxide support material is coated with a CN nano coating in advance, then, a cobalt salt is loaded onto the prepared support by utilizing the traditional dipping method, and finally, a cobalt salt precursor is decomposed by adopting a glow-discharge plasma technology, so that the size of prepared Co nanoparticles and a cobalt-support interaction can be effectively controlled, and improvement on Fischer-Tropsch synthesis reaction related catalysis performance indexes of the catalyst such as stability and catalytic activity is facilitated. Through combining carbon nitrogen coating and a plasma treatment technology, the activity of the catalyst is improved, and the reaction stability of the catalyst can beimproved.

Description

technical field [0001] The invention relates to the technical field of nano catalysts, in particular to a method for preparing a catalyst with high activity and high stability for Fischer-Tropsch synthesis reaction. Background technique [0002] Fischer-Tropsch synthesis (FTS for short) is the synthesis gas (CO and H 2 ) into a heterogeneous catalytic process of hydrocarbons, which can be used to produce clean fuels and specialty chemicals without nitrogen and sulfur. The raw material synthesis gas of FTS can be converted from coal, natural gas, and biomass. The use of FTS can efficiently utilize my country's abundant carbon resources or renewable resources, promote the sustainable development of carbon cycle, and thus alleviate my country's energy tension. [0003] FTS catalysts are affected by three factors: active metals, additives, and supports, so studying the structure-activity relationship of catalysts is helpful for screening FTS catalysts with excellent performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/02B01J37/34C10G2/00
CPCB01J27/24B01J37/349B01J37/0207C10G2/332B01J35/393
Inventor 洪景萍王博李金林张煜华
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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