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Catalyst, preparation method thereof and method for preparing lower olefin from synthesis gas

A catalyst and synthesis gas technology, applied in molecular sieve catalysts, chemical instruments and methods, and hydrocarbon production from carbon oxides, etc., can solve problems such as unusable catalysts, and achieve improved catalytic activity, high raw material conversion rate and target product selectivity Effect

Active Publication Date: 2020-04-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of this disclosure is to provide a catalyst and its preparation method and a method for preparing light olefins from synthesis gas, so as to overcome the defect that existing catalysts cannot be used at higher space velocities

Method used

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  • Catalyst, preparation method thereof and method for preparing lower olefin from synthesis gas
  • Catalyst, preparation method thereof and method for preparing lower olefin from synthesis gas
  • Catalyst, preparation method thereof and method for preparing lower olefin from synthesis gas

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Dissolve 3.17g potassium permanganate in 40.55g deionized water, heat and stir to dissolve it to form potassium permanganate solution, add 1.16g ferric nitrate to 3.64g of 50% by weight manganese nitrate solution and stir evenly to obtain ferric nitrate containing manganese nitrate solution, the weight ratio of potassium permanganate to manganese nitrate is 1.7:1, and the molar ratio of Fe:Mn is 1:10. The above two solutions are mixed and transferred to a hydrothermal reaction kettle, and placed in 180°C water Thermal reaction 24h. The resulting brown precipitate was washed with deionized water several times until the pH of the washing solution was 7, and then the solid product was dried at 120°C overnight and calcined at 400°C for 4 hours to obtain the catalyst A1 prepared in this example. The composition of Catalyst A1 is 8% by weight of Fe-OMS-2 based on the dry basis weight of .

Embodiment 2

[0062] Dissolve 3.17g potassium permanganate in 40.55g deionized water, heat and stir to dissolve it to form potassium permanganate solution, add 0.58g ferric nitrate to 3.64g of 50% by weight manganese sulfate solution and stir evenly to obtain ferric nitrate containing The manganese sulfate solution, the weight ratio of potassium permanganate and manganese sulfate is 1.7:1, the molar ratio of Fe:Mn is 1:20, the above two solutions are mixed, and transferred to a hydrothermal reaction kettle, in 180 ℃ water Thermal reaction 24h. The resulting brown precipitate was washed several times with deionized water until the pH of the washing solution was 7, and then the solid product was dried at 120°C overnight and calcined at 400°C for 4 hours to obtain the catalyst A2 prepared in this example. The composition of Catalyst A2 was 4% by weight Fe-OMS-2 based on the dry weight of .

Embodiment 3

[0064]Dissolve 3.17g potassium permanganate in 40.55g deionized water, heat and stir to dissolve it to form potassium permanganate solution, add 0.25g ferric nitrate to 3.64g of 50% by weight manganese nitrate solution and stir evenly to obtain ferric nitrate containing manganese nitrate solution, the weight ratio of potassium permanganate to manganese nitrate is 1.7:1, and the molar ratio of Fe:Mn is 1:25. The above two solutions are mixed and transferred to a hydrothermal reaction kettle, and heated in 180°C water Thermal reaction 24h. The resulting brown precipitate was washed with deionized water several times until the pH of the washing solution was 7, and then the solid product was dried at 120°C overnight and calcined at 400°C for 4h to obtain the catalyst A3 prepared in this example. The composition of Catalyst A3 was 3.2% by weight of Fe-OMS-2 based on the dry basis weight of .

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Abstract

The invention relates to a catalyst, a preparation method thereof and a method for preparing lower olefin from synthesis gas. The catalyst comprises a carrier and an active component, the carrier contains a manganese oxide molecular sieve OMS-2, and the active component is one or more selected from metal components of group VIII metals. Compared with catalysts in the prior art, the catalyst has improved catalytic activity, and can enable a relatively high raw material conversion rate and target product selectivity at a high space velocity when the catalyst is used for preparing the lower olefin from the synthesis gas.

Description

technical field [0001] The present disclosure relates to a catalyst, a preparation method thereof and a method for preparing light olefins from synthesis gas. Background technique [0002] Olefin is an important basic chemical raw material in the production of chemical industry, and it is also a symbol to measure the development level of a country's petrochemical industry. From 1995 to 2010, the world's ethylene demand grew at an average annual rate of 4.1%. It is estimated that by 2015, my country's ethylene production capacity will be 27.5 million tons, and the domestic guarantee capacity will be 64%. At the same time, the world's propylene demand is also growing rapidly. By 2010, the average annual growth rate will reach 6.3%. It is estimated that by 2015, my country's propylene production capacity will be 24 million tons, and the domestic guarantee capacity will be 77%. The relationship between supply and demand of olefins in my country is tense. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/76B01J29/74C07C1/04C07C11/02
CPCB01J29/76B01J29/74C07C1/044C07C11/02Y02P20/52
Inventor 晋超王薇吴玉张荣俊侯朝鹏孙霞夏国富
Owner CHINA PETROLEUM & CHEM CORP
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