Method for preparing Na-doped carbon dioxide adsorbent ceramic by template method

A carbon dioxide and adsorbent technology, which is applied in the field of preparing Na-doped carbon dioxide adsorbent ceramics by a template method, can solve the problems that the adsorption effect needs to be improved, stay, etc., and achieves a high carbon dioxide adsorption capacity, promotes the gel process, and has a high specific surface area. Effect

Inactive Publication Date: 2017-05-31
姚月祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the research on doped carbon dioxide adsorbents in the prior art still stays in the process of simple potassium and sodium ion doping, and its adsorption effect needs to be improved.

Method used

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  • Method for preparing Na-doped carbon dioxide adsorbent ceramic by template method

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Embodiment 1

[0030] A method for preparing Na-doped carbon dioxide adsorbent ceramics by a template method, comprising the following preparation steps:

[0031] (1) Prepare materials, zirconium source is zirconium oxynitrate, lithium source is lithium nitrate; Catalyst is acidic catalyst; Lye is ammonia water; Binding agent is glycerol; Coagulant is propylene oxide; Templating agent is PEG20000;

[0032] (2) Dissolve the zirconium source, lithium source, catalyst, binder, and templating agent in deionized water according to a certain ratio, then slowly add lye, and stir at 80°C for 3 hours to form a transparent sol;

[0033] (3) Then raise the temperature to 85°C, add a coagulation accelerator to obtain a gel precursor;

[0034] (4) Grind and disperse the lithium zirconate precursor in a mortar, add activated carbon, then add water glass, wherein the addition of water glass accounts for 7wt% of the mixture, grind again, and then carry out hot pressing molding. First sintering at 400°C for...

Embodiment 2

[0040] A method for preparing Na-doped carbon dioxide adsorbent ceramics by a template method, comprising the following preparation steps:

[0041] (1) Prepare materials, zirconium source is zirconium oxynitrate, lithium source is lithium nitrate; Catalyst is acidic catalyst; Lye is ammonia water; Binding agent is glycerol; Coagulant is propylene oxide; Templating agent is PEG20000;

[0042] (2) Dissolve the zirconium source, lithium source, catalyst, binder, and templating agent in deionized water according to a certain ratio, then slowly add lye, and stir at 80°C for 3 hours to form a transparent sol;

[0043] (3) Then raise the temperature to 85°C, add a coagulation accelerator to obtain a gel precursor;

[0044] (4) Grind and disperse the lithium zirconate precursor in a mortar, add activated carbon, grind again, and then perform hot pressing molding. After molding, sinter at 400 degrees Celsius for 2 hours, and then proceed at 600 degrees Celsius. Secondary sintering wit...

Embodiment 3

[0050] A method for preparing Na-doped carbon dioxide adsorbent ceramics by a template method, comprising the following preparation steps:

[0051] (1) Prepare materials, zirconium source is zirconium oxynitrate, lithium source is lithium nitrate; Catalyst is acidic catalyst; Lye is ammonia water; Binding agent is glycerol; Coagulant is propylene oxide; Templating agent is PEG20000;

[0052] (2) Dissolve the zirconium source, lithium source, catalyst, binder, and templating agent in deionized water according to a certain ratio, then slowly add lye, and stir at 80°C for 3 hours to form a transparent sol;

[0053] (3) Then raise the temperature to 85°C, add a coagulation accelerator to obtain a gel precursor;

[0054] (4) Grind and disperse the lithium zirconate precursor in a mortar, add activated carbon, grind again, and then perform hot pressing molding. After molding, sinter at 400 degrees Celsius for 2 hours, and then proceed at 600 degrees Celsius. Secondary sintering wit...

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Abstract

The invention relates to a method for preparing a Na-doped carbon dioxide adsorbent ceramic by a template method. The method comprises the following steps: (1) preparing materials; (2) dissolving a zirconium source, a lithium source, a catalyst, a binding agent and a template agent into deionized water according to a certain ratio, then slowly adding alkali liquor, stirring the mixture for 2-4 hours at 75-85 DEG C, so as to form a transparent sol; (3) subsequently raising the temperature to 85 DEG C, and adding a coagulant to obtain a gel precursor; (4) grinding and dispersing the lithium zirconate precursor in a mortar, adding activated carbon to obtain a mixture material, and then adding water glass, wherein the adding amount of the water glass accounts for 1-15 wt% of the mixture material; grinding again, and then carrying out hot-press molding; after molding, performing first sintering at 300-400 DEG C for 1-2 hours; performing secondary sintering at 550-650 DEG C for 1-2 hours; performing third sintering at 700-850 DEG C for 1-2 hours, so as to obtain the Na-doped carbon dioxide adsorbent ceramic.

Description

technical field [0001] The invention belongs to the field of carbon dioxide adsorbents, in particular to a method for preparing Na-doped carbon dioxide adsorbent ceramics by a template method. Background technique [0002] Carbon dioxide adsorbent is a common raw material for chemical adsorption, and it is not the mainstream way to solve the greenhouse effect. Now there are many adsorbents for carbon dioxide, but the adsorption efficiency of a single component is generally relatively poor, so ion-doped carbon dioxide adsorbents are generally studied now. [0003] For example, CN201310552064.8, China National Building Materials International Engineering Group Co., Ltd. discloses a method for preparing a Na-doped lithium silicate ceramic material capable of directly adsorbing CO2 at high temperature. Using solid phase reaction method, quartz sand and Li2CO3 are used as reaction raw materials, and Na2CO3 is used as doping source at the same time. Quartz sand, lithium carbonate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B35/48C04B35/624C04B35/64B01D53/02B01J20/20B01J20/28B01J20/30
CPCB01D53/02B01D2256/22B01J20/06B01J20/20B01J20/28059C04B35/48C04B35/624C04B35/64C04B38/068C04B2235/3427C04B2235/661C04B38/067C04B38/0054Y02C20/40
Inventor 姚月祥
Owner 姚月祥
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