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Application of microporous carbon material in adsorption separation of olefin and alkane

A technology of adsorption separation and microporous carbon, which is applied in the field of application of microporous carbon materials in the adsorption and separation of alkenes and alkanes, can solve the problem of difficult to meet the strict requirements of gas dynamic separation with similar structure, unfavorable adsorption and separation selectivity, carbon materials Wide pore size and other issues, to achieve the effect of green preparation method, high kinetic adsorption selectivity, and high adsorption capacity

Active Publication Date: 2022-04-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the preparation process of general carbon materials, it is necessary to add organic pore-adjusting agents for activated pore-forming treatment, which causes environmental pollution, and the obtained carbon materials have a wide pore size, which is difficult to meet the stringent requirements of gas dynamic separation with similar structures, which is not conducive to the selection of adsorption separation. sexual enhancement

Method used

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  • Application of microporous carbon material in adsorption separation of olefin and alkane
  • Application of microporous carbon material in adsorption separation of olefin and alkane
  • Application of microporous carbon material in adsorption separation of olefin and alkane

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Prepare a 0.75mol / L sucrose solution, fill the sucrose solution to 90% of the hydrothermal reactor, place it in a temperature-programmed oven, and raise the temperature to 190°C at a rate of 3°C / min to react for 5 hours, and then the obtained char is directly Dry and grind the tablet, transfer it to a tube furnace, in a nitrogen gas atmosphere, control the nitrogen flow rate to 25mL / min, raise the temperature to 500°C at a rate of 1°C / min, and then rise to 500°C at a rate of 5°C / min. 650°C for high-temperature activation to form pores, and after reaching the target temperature, directly cool down to prepare microporous carbon materials.

[0051] The microporous carbon material prepared in this example has a microporosity of 100% and a specific surface area of ​​466m 2 / g, the effective micropore diameter is

[0052] In order to test the adsorption performance of the microporous carbon material prepared in this example, a single-component adsorption experiment of prop...

Embodiment 2

[0056] Prepare a 0.75mol / L sucrose solution, fill the sucrose solution to 90% of the hydrothermal reactor, place it in a temperature-programmed oven, and raise the temperature to 190°C at a rate of 3°C / min to react for 5 hours, and then the obtained char is directly Dry and grind the tablet, transfer it to a tube furnace, in a nitrogen gas atmosphere, control the nitrogen flow rate to 25mL / min, raise the temperature to 500°C at a rate of 1°C / min, and then rise to 500°C at a rate of 5°C / min. 750°C for high temperature activation pore formation. After reaching the target temperature, the temperature is directly lowered and cooled to prepare a microporous carbon material.

[0057] The microporous carbon material prepared in this example has a microporosity of 100% and a specific surface area of ​​536m 2 / g, the effective micropore diameter is

[0058] In order to test the adsorption performance of the microporous carbon material prepared in this example, a single-component ad...

Embodiment 3

[0062]Prepare a 0.5mol / L sucrose solution, fill the sucrose solution to 90% of the hydrothermal reactor, place it in a temperature-programmed oven, and raise the temperature to 190°C at a rate of 3°C / min to react for 5 hours, and then the obtained char is directly Dry and grind the tablet, transfer it to a tube furnace, in a nitrogen gas atmosphere, control the nitrogen flow rate to 25mL / min, raise the temperature to 500°C at a rate of 1°C / min, and then rise to 500°C at a rate of 5°C / min. 650°C for high temperature activation pore formation. After reaching the target temperature, the temperature is directly lowered and cooled to prepare a microporous carbon material.

[0063] The microporous carbon material prepared in this example has a microporosity of 100% and a specific surface area of ​​495m 2 / g, the effective micropore diameter is

[0064] The same method as in Example 1 was used to carry out the single-component adsorption experiment of propylene and propane. Afte...

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Abstract

The invention relates to application of a microporous carbon material in adsorption and separation of olefin and alkane, and a preparation method of the microporous carbon material comprises the following steps: S1, carrying out hydrothermal reaction on a sucrose solution to obtain coke; and S2, carrying out pore-forming treatment on the coke to obtain the microporous carbon material. The microporous carbon material adopted in the invention has the characteristics of good stability, developed pore structure and large specific surface area, and has high selectivity when being used for dynamic adsorption separation of olefin and alkane.

Description

technical field [0001] This application relates to the application of a microporous carbon material in the adsorption and separation of alkenes and alkanes. [0002] technical background [0003] Ethylene and propylene are two important organic chemical raw materials with the largest output and consumption in the world, and their production capacity marks the development level of a country's petrochemical industry. High-purity olefin products are widely used in the production of polymers. Olefins are mainly produced by the cracking of naphtha, and there are also a large number of alkanes with the same carbon number in the production process. However, ethylene and ethane, propylene and propane are highly similar in structure and have similar boiling points. How to remove the corresponding alkane compounds in olefin products It has become a major problem restricting the production process of polymer grade olefins. [0004] At present, the industry still relies on cryogenic di...

Claims

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Application Information

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IPC IPC(8): B01D53/02B01J20/20B01J20/30B01J20/28
Inventor 鲍宗必陈富强黄鑫磊任其龙杨启炜张治国杨亦文
Owner ZHEJIANG UNIV
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