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Nanometer iron-based Fischer-Tropsch synthesis catalyst as well as preparation method and application thereof

A catalyst and iron-based fee technology, which is applied in the field of nano-iron-based Fischer-Tropsch synthesis catalyst and its preparation, can solve the problem of uneven shape and size, achieve the effects of reducing diffusion resistance, improving mass transfer, and saving preparation costs

Inactive Publication Date: 2019-06-21
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The object of the present invention is to provide a surfactant-free, low-cost, environmentally-friendly solution for the shortcomings of non-supported nano-iron-based catalysts with uneven appearance and size, and strong interaction between supported iron-based catalyst supports and additives. Nano-iron-based catalyst with high catalytic activity and good stability in high-temperature Fischer-Tropsch synthesis reaction, and preparation method and application of the catalyst

Method used

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  • Nanometer iron-based Fischer-Tropsch synthesis catalyst as well as preparation method and application thereof
  • Nanometer iron-based Fischer-Tropsch synthesis catalyst as well as preparation method and application thereof
  • Nanometer iron-based Fischer-Tropsch synthesis catalyst as well as preparation method and application thereof

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Effect test

Embodiment 1

[0025] Weigh 20.00g ferric nitrate (Fe(NO 3 ) 3 9H 2 (2), 9.3655g urea were dissolved in 80ml, 20ml deionized water respectively at room temperature and magnetically stirred for 30min, and 0.8859g manganese nitrate solution (wt%=50%) was weighed and added in the above-mentioned ferric nitrate solution. Subsequently, under vigorous stirring, the urea solution was slowly added dropwise into the iron and manganese nitrate mixed solution. Aging at room temperature for 1h. After aging, the homogeneous solution was transferred to a 200ml polytetrafluoroethylene reactor and heated in water at 140°C for 18h. After the reaction, it was lowered to room temperature, washed three times with absolute ethanol and deionized water, placed in an oven at 110°C for drying for about 12 hours, then transferred to a muffle furnace with air at 500°C for 4 hours. The nano-iron-based catalyst can be obtained.

Embodiment 2

[0027] Weigh 20.00g ferric nitrate (Fe(NO 3 ) 3 9H 2 (2), 9.3655g urea were dissolved in 80ml, 20ml deionized water respectively at room temperature and magnetically stirred for 30min, and 0.8859g manganese nitrate solution (wt%=50%) was weighed and added in the above-mentioned ferric nitrate solution. Subsequently, under vigorous stirring, the urea solution was slowly added dropwise into the iron and manganese nitrate mixed solution. Aging at room temperature for 1h. After aging, the homogeneous solution was transferred to a 200ml polytetrafluoroethylene reactor and heated at 100°C for 18h. After the reaction, it was lowered to room temperature, washed three times with absolute ethanol and deionized water, placed in an oven at 110°C for drying for about 12 hours, then transferred to a muffle furnace with air at 500°C for 4 hours. The nano-iron-based catalyst can be obtained.

Embodiment 3

[0029] Weigh 20.00g ferric nitrate (Fe(NO 3 ) 3 9H 2 (2), 9.3655g urea were dissolved in 80ml, 20ml deionized water respectively at room temperature and magnetically stirred for 30min, and 0.8859g manganese nitrate solution (wt%=50%) was weighed and added in the above-mentioned ferric nitrate solution. Subsequently, under vigorous stirring, the urea solution was slowly added dropwise into the iron and manganese nitrate mixed solution. Aging at room temperature for 1h. After aging, the homogeneous solution was transferred to a 200ml polytetrafluoroethylene reactor and heated in water at 120°C for 18h. After the reaction, it was lowered to room temperature, washed three times with absolute ethanol and deionized water, placed in an oven at 110°C for drying for about 12 hours, then transferred to a muffle furnace with air at 500°C for 4 hours. The nano-iron-based catalyst can be obtained.

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Abstract

The invention relates to a nanometer iron-based Fischer-Tropsch synthesis catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: performing hydrothermal reaction on an iron salt, manganese salt and urea homogeneous mixed solution, performing solid and liquid separation on the hydrothermal synthesis product, and washing, drying and roasting to prepare the nanometer iron-based Fischer-Tropsch synthesis catalyst which is applied to reaction for preparing low-carbon olefin through Fischer-Tropsch synthesis. Compared with the prior art, the nanometer iron-based catalyst with uniform particle size, high catalytic reaction activity and excellent low-carbon olefin selectivity can be obtained.

Description

technical field [0001] The invention relates to the field of Fischer-Tropsch synthesis, in particular to a nano-iron-based Fischer-Tropsch synthesis catalyst and its preparation method and application. Background technique [0002] Light olefins (ethylene, propylene and butene, C 2 ＝ -C 4 ＝ ) is an important basic organic chemical raw material in the production of the chemical industry, the cornerstone of the modern chemical industry, and an important symbol to measure the development capability of a country's chemical industry. They are used in the synthesis of polymers, solvents, pharmaceuticals, cosmetics, detergents and many other products. Traditional olefin production mainly relies on steam thermal decomposition and catalytic cracking of naphtha. [0003] At present, the production methods of olefins in industry can be divided into petroleum route and non-petroleum route. The oil route is through methods such as naphtha cracking or alkane dehydrogenation. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J37/10B82Y30/00B82Y40/00C10G2/00C07C1/04C07C11/04C07C11/06C07C11/08
CPCY02P20/52
Inventor 孙启文应卫勇孙燕钱炜鑫张宗森吴贤张海涛马宏方刘殿华
Owner YANKUANG ENERGY R&D CO LTD