High-activity CaO-based bifunctional material as well as preparation method and application thereof

A dual-functional material, high-activity technology, applied in chemical instruments and methods, climate sustainability, sustainable manufacturing/processing, etc. Stable pore structure, strong cycle stability, and the effect of improving activity

Active Publication Date: 2021-06-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For the highly active CaO-based materials in the prior art, there is still CO capture in use 2 Performance, cycle stability and low performance of enhanced biomass gasification hydrogen production

Method used

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  • High-activity CaO-based bifunctional material as well as preparation method and application thereof
  • High-activity CaO-based bifunctional material as well as preparation method and application thereof
  • High-activity CaO-based bifunctional material as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0035] In one or some embodiments of the present disclosure, a method for preparing the above-mentioned highly active CaO-based bifunctional material is provided, including the following steps: (1) weighing limestone at room temperature, then adding distilled water, and stirring the mixture in a magnetic stirrer ;

[0036] (2) adding a carboxyl-containing solution to the stirred suspension, filtering the mixture to obtain a clear solution, and then drying it to obtain a solid material;

[0037] (3) Weigh the solid material obtained in step (2) at room temperature, add distilled water and stir until the solid material is completely dissolved; add aluminum salt and cerium salt to the solution at room temperature and stir until it is completely dissolved;

[0038] (4) Place the solution obtained in step (3) in a ventilated drying oven to dry, and obtain a solid material after complete drying;

[0039] (5) Combusting the solid material obtained in step (4) under an air atmosphere...

Embodiment 1

[0061] This example provides a highly active complex calcium-based CO 2 The preparation method of absorbent, specifically comprises the steps:

[0062] (1) Limestone and distilled water with a mass volume ratio of 4g:8mL were mixed in a beaker, and placed in a magnetic stirrer to stir for 10min;

[0063] (2) Add glacial acetic acid to the obtained suspension to form a mixed solution, the volume ratio of glacial acetic acid and distilled water is 1:2; after the mixture is stable, filter the mixed solution to obtain a clear solution, and dry it to obtain the solid material calcium acetate ;

[0064] (3) Weigh 10 g of calcium acetate prepared in step (2) at room temperature, add 200 mL of distilled water and stir until the calcium acetate is completely dissolved to obtain a uniform solution; add 1.505 g of cerium nitrate hexahydrate and 1.462 g of nonaqueous to the above calcium acetate solution Aluminum nitrate, the mixture is placed in a magnetic stirrer at room temperature a...

Embodiment 2

[0069] This embodiment provides a method for preparing a highly active composite CaO-based bifunctional material, which specifically includes the following steps:

[0070] (1) Mix limestone and distilled water with a mass volume ratio of 1g:8mL in a beaker, place it in a magnetic stirrer and stir for 10min;

[0071] (2) Add glacial acetic acid to the obtained suspension to form a mixed solution, the volume ratio of glacial acetic acid and distilled water is 1:2.5; after the mixture is stabilized, the mixed solution is filtered to obtain a clear solution, and the solid material calcium acetate is obtained after drying ;

[0072] (3) Weigh 10 g of calcium acetate prepared in step (2) at room temperature, add 150 mL of distilled water and stir until the calcium acetate is completely dissolved to obtain a uniform solution; add 1.505 g of cerium nitrate hexahydrate and 1.462 g of nonaqueous to the above calcium acetate solution Aluminum nitrate, the mixture is placed in a magnetic...

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Abstract

The invention relates to the technical field of bifunctional calcium-based materials, and particularly provides a high-activity CaO-based bifunctional material as well as a preparation method and application thereof. The CaO-based bifunctional material is prepared from the following components: CaO, CeO2, Ca12Al14O33 and Ca2Fe2O5. The preparation method comprises the steps of (1) adding limestone into distilled water, and stirring; (2) adding a solution containing carboxyl into the stirred turbid liquid, filtering after the mixture is stable, and then drying to obtain a solid material; (3) adding distilled water into the solid material at room temperature, stirring until the solid material is completely dissolved, and adding aluminum salt and cerium salt into the solution and stirring; (4) drying the solution in a ventilated drying box, and obtaining a solid material after complete drying; (5) burning the solid material in an air atmosphere to obtain a solid material; and (6) weighing red mud at room temperature, and uniformly mixing to obtain the high-activity CaO-based bifunctional material. The problems that when a high-activity CaO-based material is used, the CO2 trapping performance is low, and the cycle stability and the enhanced biomass gasification hydrogen production performance are low in the prior art are solved.

Description

technical field [0001] The present disclosure relates to the technical field of bifunctional calcium-based materials, and specifically provides a high-activity CaO-based bifunctional material and its preparation method and application. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] At present, biomass steam gasification technology is considered to be a relatively promising hydrogen production technology. Water vapor as a gasification medium can provide a large amount of hydrogen elements to improve the hydrogen production effect. The reaction equation is shown in (1) . However, the traditional steam gasification of biomass is limited by the reaction balance, and the H in the gasification gas 2 Concentration and yield are still low. Biomass steam gasification and CO 2 Absorption-enhanced biomass steam gasification (SE-SGB) technology is combi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C01B3/32
CPCB01J23/83C01B3/326C01B2203/0233C01B2203/1041Y02P30/00
Inventor 李英杰闫宪尧张春晓赵建立王泽岩韩奎华牛胜利
Owner SHANDONG UNIV
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