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Porous ceramic supported iron-based Fischer-Tropsch catalyst and method of use thereof

A technology of porous ceramics and catalysts, applied in the field of porous ceramics-supported iron-based Fischer-Tropsch catalysts, can solve the problems of low activity and selectivity at low temperatures

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] One of the technical problems solved by the present invention is the problem of low activity and selectivity of synthesis gas-based low-carbon olefins (C2-C4 olefins) catalysts in the prior art at low temperatures. A catalyst for synthesis-gas-based low-carbon olefins is provided. It is used in the production of low-carbon olefins from syngas, and has good low-temperature activity and low-carbon olefin selectivity

Method used

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  • Porous ceramic supported iron-based Fischer-Tropsch catalyst and method of use thereof
  • Porous ceramic supported iron-based Fischer-Tropsch catalyst and method of use thereof
  • Porous ceramic supported iron-based Fischer-Tropsch catalyst and method of use thereof

Examples

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Effect test

Embodiment 1

[0049] Weigh 30 grams of methylamine, 70 grams of propylamine and 200 grams of deionized water, mix them into a solution and add them to the reactor, then weigh 100 grams of porous ceramics containing 0.25% iron oxide and 0.25% zinc oxide, add them to the reactor, seal Raise the temperature to 160°C, react for 24 hours, then cool down to room temperature, filter the solid, dry at 100°C for 5 hours, and then bake at 400°C for 12 hours.

Embodiment 2

[0051] Weigh 200 grams of ethylenediamine and 100 grams of deionized water, mix them into a solution and add them to the reaction kettle, then weigh 10 grams of porous ceramics containing 15% iron oxide, add them to the reaction kettle, seal and heat up to 170°C, and react for 12 hours After cooling down to room temperature, the solid was filtered and dried at 80°C for 24 hours, and then calcined at 500°C for 8 hours.

Embodiment 3

[0053] Weigh 30 grams of ethylamine, 77 grams of butylamine, 170 grams of triethylamine and 23 grams of deionized water, mix them into a solution and add them to the reaction kettle, then weigh 6 grams of porous ceramics containing 0.6% cobalt oxide and 2.4% nickel oxide , added to the reaction kettle, sealed and heated to 250°C, reacted for 72 hours and then lowered to room temperature, filtered the solid and dried at 120°C for 2 hours, and then roasted at 800°C for 1 hour.

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Abstract

The invention relates to a porous ceramic supported iron-based Fischer-Tropsch catalyst, a preparation method and a using method of the catalyst, and mainly solves the problem of low activity and selectivity of the catalysts at a low temperature for preparing olefin by using synthesis gas. In the method, a technical scheme of using a synthesis gas to prepare the low-carbon olefin catalyst is adopted to solve the problem well, wherein the catalyst comprises the following components in percentage by weight: (1) 20-80% of Fe contained active components, and (2) 20-80% of large-surface porous ceramic carriers. The catalyst can be used in industrial application of preparing low-carbon olefin by synthesis gas.

Description

technical field [0001] The invention relates to a porous ceramic loaded iron-based Fischer-Tropsch catalyst and a use method thereof. Background technique [0002] Low-carbon olefins (olefins with carbon atoms ≤ 4) represented by ethylene and propylene are the basic raw materials of the chemical industry. At present, the main raw materials of low-carbon olefins in the world are petroleum hydrocarbons, of which naphtha accounts for the majority, and there are Alkanes, hydrogenated diesel oil, some heavy oil, etc. At home and abroad, natural gas or light petroleum fractions are mostly used as raw materials, and low-carbon olefins are produced by steam cracking in ethylene complexes. Steam cracking is a large energy-consuming device in petrochemical industry, and it completely depends on non-renewable petroleum resources. With the increasing shortage of oil resources, it is urgent to find alternative resources. Therefore, the research work of producing olefins from natural g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/04B01J23/80B01J23/745B01J23/755B01J23/888B01J23/889B01J35/10C07C1/04C07C11/04C07C11/06C07C11/08
CPCY02P20/52
Inventor 宋卫林陶跃武李剑锋庞颖聪
Owner CHINA PETROLEUM & CHEM CORP
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