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Method for preparing iron disulfide

A technology of iron disulfide and magnetic iron oxide, applied in iron sulfide, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of high cost and achieve the effects of improving yield, simple operation and mild reaction conditions

Active Publication Date: 2016-06-29
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Another object of the present invention is to overcome the high cost defects of the existing iron disulfide preparation process, and then provide a low-cost method for preparing iron disulfide

Method used

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  • Method for preparing iron disulfide

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Embodiment 1

[0025] The method for preparing iron disulfide described in the present embodiment may further comprise the steps:

[0026] Add 16g of magnetic iron oxide Fe to the reactor 21.333 o 32 and 10.2mL of 30wt% hydrogen peroxide, mix well and then pass into the reactor containing H 2 S40000ppm nitrogen, keep the pressure in the reactor at 2MPa, and the gas at the outlet of the reactor does not contain H 2 S time means that the reaction is complete, and 24g of iron disulfide is obtained.

Embodiment 2

[0028] The method for preparing iron disulfide described in the present embodiment may further comprise the steps:

[0029] Add 20g of magnetic iron oxide Fe to the reactor 21.333 o 32 Desulfurization agent and 5g sodium percarbonate, after mixing, the reactor is heated to 125°C and filled with H 2 The nitrogen of S40000ppm, keep the pressure in the reactor to be 0.05MPa, after the desulfurizer is saturated and desulfurized, the iron disulfide hydrogenation catalyst is obtained, and its X-ray polycrystalline powder diffraction pattern is as follows figure 1 shown.

Embodiment 3

[0031] Add 30g of magnetic iron oxide Fe to the reactor 21.333 o 32 Desulfurizer and 10g tert-butyl hydroperoxide, after mixing, control the temperature of the reactor to 20°C and feed 2 S40000ppm of nitrogen, keep the pressure in the reactor at 0.1MPa, and obtain the iron disulfide hydrogenation catalyst after the desulfurizer is saturated and desulfurized.

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Abstract

The invention provides a method for preparing iron disulfide. According to the method, magnetic iron oxide Fe21.333O32 and gas containing H2S are taken as raw materials initiatively and react in the presence of an oxidizing agent, and iron disulfide is prepared. The reaction raw material magnetic iron oxide Fe21.333O32 can be a desulfurizing agent with magnetic iron oxide Fe21.333O32 serving as an active ingredient, the desulfurizing agent is contacted with the gas containing H2S in the presence of the oxidizing agent and performs desulfurization, an obtained material containing iron disulfide can be directly used as a hydrogenation catalyst, the raw material gas is desulfurized, besides, the hydrogenation catalyst is prepared, emission of a waste desulfurizing agent is eliminated, the production cost of iron disulfide is substantially reduced, and the method has great environmental benefits and economic benefits.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a method for preparing iron disulfide which can be used as a hydrogenation catalyst. Background technique [0002] my country is a country with large coal resources. In recent years, my country's coal chemical industry has developed rapidly, especially in coal-to-methanol, coal-to-oil, coal tar hydrofining, asphalt hydrogenation to liquid hydrocarbons, coke oven gas to methanol and LNG Remarkable achievements have been made in other fields. The hydrogenation catalysts commonly used in the above-mentioned coal chemical industry are mostly iron-based, cobalt-based and molybdenum-based catalysts, of which cobalt-based and molybdenum-based catalysts have higher hydrogenation activities, but are expensive, which limits their wide application, while iron-based The catalyst is cheap and easy to get, and it is a kind of hydrogenation catalyst that is currently researched more. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12B01J27/043
CPCB01J27/043C01G49/12C01P2002/72
Inventor 高群仰刘振义刘营张君刘玉军
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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