Efficient adsorbent for separating CO and preparation method of high-efficiency adsorbent

An adsorbent and high-efficiency technology, applied in the field of high-efficiency adsorbent for separating CO and its preparation, can solve the problems of low CO yield and low CO selectivity, achieve high CO yield, simple preparation process, and reduce preparation cost Effect

Active Publication Date: 2016-12-14
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low CO selectivity and low CO yield in CO adsorbents in the prior art, the purpose of the present invention is to provide a high-efficiency adsorbent for separating CO and its preparation method

Method used

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preparation example Construction

[0030] According to an exemplary embodiment of the present invention, a method for preparing a high-efficiency adsorbent for separating CO includes the following steps.

[0031] Step A:

[0032] Weighing a predetermined amount of silica sol and adding water to dilute it, then adding aluminum source solution, sodium source solution and copper source solution dropwise to the diluted silica sol, stirring evenly to obtain a liquid mixture. Wherein, the aluminum source solution, the sodium source solution and the copper source solution are respectively prepared by dissolving the aluminum source, the sodium source and the copper source in the water source.

[0033] Among them, SiO in silica sol 2 The mass percentage content is 24 to 26% and Na 2 The mass percent content of O is 0.042-0.0485%. Silica sol is the silicon source of the adsorbent in the present invention. In order to control the sodium content, a silicon source with low sodium content should be used. The predetermine...

Embodiment 1

[0062] The raw material components for preparing adsorbent in this embodiment include:

[0063] Silica sol 100g, SiO in the silica sol 2 The mass percentage content is 26.00%, Na 2 The mass percentage of O is 0.042%; 2 o 3 Gauge, mass SiO 2 48.57% of the mass of aluminum acetate; as Na 2 O meter, mass is SiO 2 1.20 times the mass of sodium hydroxide; with H 2 O meter, mass is Na 2 Deionized water with 13.16 times the mass of O; in terms of Cu atoms, the mass is SiO 2 17.82% cuprous chloride by mass.

[0064] This adsorbent is made by the following method by above-mentioned raw material component:

[0065] a) According to the component ratio, first weigh 100g of silica sol, add deionized water to dilute, add aluminum acetate solution dropwise at a rate of 1-2ml / min, then add sodium hydroxide solution, and finally add dropwise Cuprous chloride solution, stirred evenly to obtain a liquid mixture;

[0066] b) stirring the obtained liquid mixture evenly, aging at room te...

Embodiment 2

[0070] The raw material components for preparing adsorbent in this embodiment include:

[0071] Silica sol 100g, SiO in the silica sol 2 The mass percentage content is 24.00%, Na 2 The mass percentage of O is 0.0485%; 2 o 3 Gauge, mass SiO 2 34% aluminum formate by mass; as Na 2 O meter, mass is SiO 2 1.00 times the mass of sodium hydroxide; with H 2 O meter, mass is Na 2 Deionized water with 9.86 times the mass of O; in terms of Cu atoms, the mass is SiO 2 14.88% copper chloride by mass.

[0072] The adsorbent is prepared by the following method from the above-mentioned component raw materials:

[0073] a) According to the proportion of the components, first weigh 100g of silica sol, add deionized water to dilute, add aluminum formate solution dropwise at a rate of 1-2ml / min, then add sodium hydroxide solution, and finally add dropwise Copper chloride solution, stirred evenly to obtain a liquid mixture;

[0074]b) stirring the obtained liquid mixture evenly, aging ...

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Abstract

The invention discloses an efficient adsorbent for separating CO and a preparation method of the efficient adsorbent for separating CO. The preparation method comprises the following steps: weighing a predetermined amount of silica sol, adding a water source for dilution, then dropwise adding an aluminum source solution, a sodium source solution and a copper source solution into the diluted silica sol sequentially, and stirring uniformly to obtain a liquid mixture; aging the liquid mixture for 6 to 10 hours at the room temperature, then adding the liquid mixture to a high-pressure reactor, continuously stirring at the temperature of 95 to 110 DEG C, taking out the mixture after carrying out crystallization for 7 to 12 hours, and washing and filtering the mixture to obtain a solid; performing vacuum drying for the solid at the temperature of 100 to 120 DEG C, and then calcining the solid for 4 to 6 hours under the atmosphere of nitrogen at the temperature of 400 to 500 DEG C to obtain the high-efficient adsorbent for separating CO. The efficient adsorbent for separating CO is prepared with the method and is high in CO selectivity and CO yield. Furthermore, a template agent is not required to be added in the adsorbent, and the high-efficiency adsorbent has a simple preparation process, so that the preparation cost of the adsorbent is effectively lowered.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and more specifically relates to a high-efficiency adsorbent for separating CO and a preparation method thereof. Background technique [0002] The CO used in carbon-chemical industry is usually separated and extracted from various mixed gases containing CO. The composition of these gas sources is relatively complex, and CO needs to be separated and purified. Industrial production has higher and higher requirements for CO separation, and there is an urgent need for efficient and economical CO separation and purification technologies. Compared with cryogenic method and COSORB method, pressure swing adsorption (PSA) method has been widely valued because of its many advantages. [0003] At present, the development of adsorbents for the separation and purification of CO is mostly focused on the use of monovalent or divalent copper salts loaded on the carrier to form adsorbents. The mechanis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/28B01J20/10C01B31/18
CPCB01D53/02B01D2257/502B01J20/0296B01J20/041B01J20/08B01J20/103B01J20/28033
Inventor 何霖谭亚南程牧曦韩伟潘相米
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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