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Cobalt-based Fischer-Tropsch catalyst and method of use thereof

A catalyst, a cobalt-based Fischer-Tropsch catalyst, used in the field of cobalt-based Fischer-Tropsch catalysts, can solve the problems of low activity and selectivity at low temperatures, achieve high activity and low-carbon olefin selectivity, strengthen adsorption activation, and reduce secondary reactions. Effect

Active Publication Date: 2020-12-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 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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  • Cobalt-based Fischer-Tropsch catalyst and method of use thereof
  • Cobalt-based Fischer-Tropsch catalyst and method of use thereof
  • Cobalt-based Fischer-Tropsch catalyst and method of use thereof

Examples

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Effect test

Embodiment 1

[0045] Weigh 150 grams of methylamine, 350 grams of propylamine and 1000 grams of deionized water, mix them into a solution and add them to the reactor, then weigh 500 grams of silicon oxide 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 to obtain nanofiber silica, the SEM spectrum of which is shown in figure 1 .

Embodiment 2

[0047] Weigh 2000 grams of ethylenediamine and 1000 grams of deionized water, mix them into a solution and add them to the reaction kettle, then weigh 100 grams of silicon oxide 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, dried at 80°C for 24 hours, and then calcined at 500°C for 8 hours to obtain silica fibers.

Embodiment 3

[0049] Weigh 300 grams of ethylamine, 770 grams of butylamine, 1700 grams of triethylamine and 230 grams of deionized water, mix them into a solution and add them to the reaction kettle, then weigh 60 grams of silicon oxide containing 0.6% iron oxide and 2.4% zinc 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, dried at 120°C for 2 hours, and then calcined at 800°C for 1 hour to obtain silica fibers.

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Abstract

The invention relates to a cobalt based fischer-tropsch catalyst, and a preparation method and an application method thereof. The invention is mainly to solve the problems of low activity and selectivity of a catalyst at a low temperature in preparation of olefin from synthesis gas. According to the invention, the catalyst used for preparation of light olefin from synthesis gas comprises the following components in terms of the weight percentage of the catalyst: (1) 20 to 80% of a Co containing active component; and (2) 20 to 80% of a nanofiber SiO2 carrier. Thus, the technical scheme well solves the above-mentioned problems and can be used for industrial application in preparation of light olefin from synthesis gas.

Description

technical field [0001] The invention relates to a cobalt-based Fischer-Tropsch catalyst and its application method. 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 gas instead of petr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J23/888B01J23/889B01J35/06C07C1/04C07C11/04C07C11/06
CPCY02P20/52
Inventor 宋卫林陶跃武李剑锋庞颖聪
Owner CHINA PETROLEUM & CHEM CORP
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