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

A Fischer-Tropsch synthesis and catalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as catalyst performance changes, and achieve the effect of high CO conversion rate and low CO2 selectivity

Inactive Publication Date: 2009-09-23
YASHENTECH CORP +1
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Problems solved by technology

[0003] Since small changes in the catalyst preparation process may lead to great changes in the performance of the catalyst, in order to improve some properties of the iron-based catalyst, such as changing its selectivity to a certain product, improving the activity of the catalyst and prolonging the service life of the catalyst etc., the research on iron-based catalysts in the industry has never been interrupted

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

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Embodiment Construction

[0024] One aspect that the present invention relates to is to provide a kind of method using sol-gel (Sol-Gel) to prepare the iron-based catalyst containing iron, manganese, copper and potassium for Fischer-Tropsch synthesis, wherein in sol-gel In the step, glycolic acid or citric acid is mixed with ammonia water to prepare ammonium glycolate or ammonium citrate solution with neutral or slightly acidic pH. Further, the molar ratio of iron and manganese contained in the prepared catalyst sample can vary from 9:1 to 2:8, and the contents of potassium and copper are about 1wt% and 0.5wt% respectively.

[0025] In one example, such as figure 1 As shown, a method 100 for preparing an iron-based catalyst containing iron, manganese, copper and potassium for Fischer-Tropsch synthesis according to the present invention includes the following steps: Sol-Gel step 115 using glycolic acid or citric acid , drying and decomposition step 120, first roasting treatment step 125, potassium elem...

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Abstract

The invention discloses a preparation method of an iron-based catalyst containing iron, manganese, potassium and copper for Fischer-Tropsch synthesis, which comprises the following steps: mixing an ammonium glycollate solution or an ammonium citrate solution with a nitrate solution of iron and manganese to obtain a sizing agent; drying, physically decomposing and baking the sizing agent; adding auxiliary agents of potassium and copper by dipping treatment; and obtaining the iron-based catalyst for Fischer-Tropsch synthesis by baking, tabletting and crushing treatment. The catalyst prepared by the preparation method of the iron-based catalyst for Fischer-Tropsch synthesis has higher CO conversion rate and lower CO2 selectivity in the application of Fischer-Tropsch synthesis.

Description

【Technical field】 [0001] The invention relates to an iron-based catalyst for Fischer-Tropsch synthesis and a preparation method thereof. 【Background technique】 [0002] Fischer-Tropsch synthesis refers to the synthesis gas (CO+H 2 ) into a synthetic reaction of hydrocarbons. Among them, the selection of catalyst is the key factor to determine whether the synthesis gas can be converted into hydrocarbons with high efficiency, that is, the key factor to realize its industrialization. After years of research in the industry, iron-based catalysts have been widely used in the industrialization of Fischer-Tropsch synthesis due to their good activity and wide reaction temperature range. [0003] Since small changes in the catalyst preparation process may lead to great changes in the performance of the catalyst, in order to improve some properties of the iron-based catalyst, such as changing its selectivity to a certain product, improving the activity of the catalyst and prolonging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C07C1/04
CPCB01J37/0018B01J23/002B01J37/0201B01J37/036B01J23/8892B01J2523/00
Inventor 卞国柱毛华平韩晖丛佩军
Owner YASHENTECH CORP
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