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Iron-based catalyst and preparation method thereof

A catalyst and catalyst carrier technology, applied in the field of coal chemical industry, can solve the problems of poor catalytic activity, poor dispersion and stability of iron-based catalysts, etc., and achieve the effects of improving catalytic activity, improving stability and high coal direct liquefaction activity.

Inactive Publication Date: 2015-11-04
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide a kind of iron-based catalyst and its preparation method, to solve the poor dispersion and stability of the iron-based catalyst in the existing direct coal liquefaction process, which leads to its relatively low catalytic activity in the direct coal liquefaction process. bad question

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  • Iron-based catalyst and preparation method thereof
  • Iron-based catalyst and preparation method thereof
  • Iron-based catalyst and preparation method thereof

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preparation example Construction

[0031] In the above preparation method, those skilled in the art can choose the specific operation method of each step. In a preferred embodiment, the pulping step includes: dissolving iron-containing soluble salts and manganese-containing soluble salts in a first solvent to form a first solution; and performing an oxidation reaction on the first solution with an alkaline solution to obtain Slurry; wherein, the first solvent is water, and the alkaline solution includes but not limited to ammonia water or an aqueous solution of inorganic alkali.

[0032] The above-mentioned principle of preparing the iron-based catalyst of the present invention is to dissolve the iron-containing soluble salt and the manganese-containing soluble salt in the first solvent to form the first solution; the first solution is mixed with the alkaline solution, and a precipitation reaction occurs first, and simultaneously Compressed air is passed through the above reaction liquid, and oxidation reaction...

Embodiment 1

[0041] Weigh 74.5gFeSO 4 ·7H 2 O was added to 600g deionized water, stirred and dissolved, and 0.61gMnSO was added 4 ·H 2 O in ferrous sulfate solution, form the mixed solution of ferrous sulfate containing manganese; Prepare the ammoniacal solution of 500g2.5wt%. Feed the above-mentioned manganese-containing ferrous sulfate solution and ammonia solution in parallel to cause precipitation reaction of ferrous iron. At the same time, air is introduced to carry out oxidation reaction. The reaction time is 60 minutes. During this period, the feed rate of ammonia water is controlled to maintain the pH value of the reaction solution. is 8.0. After the reaction, FeOOH and MnO(OH) are obtained 2 of mixed slurry.

[0042] Add 400 g of dry coal powder with a particle size of less than 200 μm to the above slurry, stir well and evenly, and filter to obtain a filter cake. Wash the filter cake with deionized water until the measured conductivity of the filtrate is less than 1000 μs / cm...

Embodiment 2

[0044] Weigh 348gFeSO 4 ·7H 2 O was added to 1200g of deionized water, stirred and dissolved, and 27.65g of MnSO was added 4 ·H 2 O in ferrous sulfate solution, form the mixed solution of ferrous sulfate containing manganese; Prepare the aqueous ammonia solution of 2150g2.5wt%. The above-mentioned manganese-containing ferrous sulfate solution and ammonia solution are fed in parallel to cause precipitation reaction of ferrous iron, and at the same time, air is introduced for oxidation. The reaction time is 80 minutes. During this period, the feed rate of ammonia water is controlled to maintain the pH value of the reaction solution. 8.0. After the reaction is completed, the reaction including FeOOH and MnO(OH) 2 of mixed slurry.

[0045] Add 300 g of dry coal powder with a particle size of less than 200 μm to the above slurry, stir well and evenly, and filter to obtain a filter cake. Wash the filter cake with deionized water until the measured conductivity of the filtrate ...

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Abstract

The present invention provides an iron-based catalyst and a preparation method thereof. The catalyst comprises an active ingredient, a structure additive and a catalyst carrier, the active ingredient comprises FeOOH, the structure additive includes MnO (OH) 2, the MnO (OH) 2 is added to separate and disperse the FeOOH for ultimate formation of the FeOOH with very small size. The FeOOH with smaller particle size is combined easily with S for conversion into an active phase Fe1-xS. The iron-based catalyst can be nearestly and rapidly reacted with coal, catalytic pyrolysis and hydrogenation of coal macromolecules can be promoted, and the efficiency of coal liquefaction is improved. The iron-based catalyst has better dispersion and stability, as well as higher activity of direct coal liquefaction.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to an iron-based catalyst and a preparation method thereof. Background technique [0002] my country's oil and natural gas resources are relatively short. In 2014, my country's dependence on foreign oil reached 59.5%, and its dependence on natural gas also rose to 32.2%. The increasing dependence on foreign crude oil and natural gas means that the situation of social production and energy security in my country will be even worse. for grim. my country is relatively rich in coal resources. It is an objective requirement of my country's energy situation to make full use of relatively abundant coal resources to make up for the shortage of oil and natural gas. However, in the face of increasingly harsh environmental problems, we must first solve the problem of how to cleanly convert and efficiently utilize coal . [0003] Coal direct liquefaction is a technology that converts coal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C10G1/06
Inventor 谢晶李克健舒歌平章序文王洪学高山松
Owner CHNA ENERGY INVESTMENT CORP LTD
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