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Adsorbent for deeply removing carbon monoxide in hydrogen, preparation method of adsorbent and method for removing carbon monoxide in hydrogen by adopting adsorbent

A carbon monoxide and adsorbent technology, applied in the field of carbon monoxide adsorbent and its preparation, can solve the problems of high roasting temperature and complicated preparation process

Pending Publication Date: 2021-09-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The adsorbent can have a high removal depth for carbon monoxide, but the preparation process is complicated, the calcination temperature is high, and the more critical is that the carbon monoxide adsorption capacity is only 21-27mL / g

Method used

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  • Adsorbent for deeply removing carbon monoxide in hydrogen, preparation method of adsorbent and method for removing carbon monoxide in hydrogen by adopting adsorbent
  • Adsorbent for deeply removing carbon monoxide in hydrogen, preparation method of adsorbent and method for removing carbon monoxide in hydrogen by adopting adsorbent
  • Adsorbent for deeply removing carbon monoxide in hydrogen, preparation method of adsorbent and method for removing carbon monoxide in hydrogen by adopting adsorbent

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preparation example Construction

[0055] Preparation according to the present invention is used for the method for the adsorbent of deep removal of carbon monoxide in hydrogen comprises the steps:

[0056] (1) Dissolving the active component precursor in water and fully stirring to obtain a precursor solution;

[0057] (2) disperse and impregnate an activated carbon carrier with a high specific surface area with the resulting precursor solution;

[0058] (3) drying the impregnated carrier and the precursor solution at a temperature of 40-100° C.; and

[0059] (4) Sintering the dried carrier in an inert atmosphere at a temperature of 150-300° C. for 3-6 hours to obtain the adsorbent.

[0060] Among them, the step (3) is preferably operated in the following manner: first perform rotary evaporation operation on the impregnated carrier and precursor solution; then dry the carrier containing the precursor solution after rotary evaporation at a temperature of 40-100°C.

[0061] In the aforementioned rotary evapora...

Embodiment 1

[0077] Dissolve 225g of anhydrous copper nitrate in water, fully stir to dissolve, then disperse and impregnate the solution on 100g of high specific surface area activated carbon carrier, control the temperature of the rotary evaporator flask at 60°C, and rotate and evaporate in a water bath at 20rpm, the ratio of activated carbon to Surface area is 1650m 2 / g, the ratio of metal copper loading to activated carbon is 12.0mmol / g. The impregnated carrier was dried at 80°C as a whole, and then sintered under the protection of an inert gas at 180°C to prepare a carbon monoxide adsorbent.

[0078] The adsorbent was placed in a fixed bed, activated at 300°C for 90 minutes under the protection of inert gas argon, cooled to room temperature, and then high-purity hydrogen containing 1ppm carbon monoxide was introduced, and the gas flow rate was controlled at 400mL / min to test the wear-through of the adsorbent. Permeability curve and adsorption capacity.

[0079] After characterizati...

Embodiment 2

[0081] Dissolve 225g of anhydrous copper nitrate in water, fully stir to dissolve, and then disperse and impregnate the solution on 100g of high specific surface area activated carbon carrier. Surface area is 1650m 2 / g, the ratio of metal copper loading to activated carbon is 12.0mmol / g. The impregnated carrier was dried at 90°C as a whole, and then sintered under the protection of inert gas at 265°C to prepare the carbon monoxide adsorbent.

[0082] The adsorbent was placed in a fixed bed, activated at 300°C for 90 minutes under the protection of inert gas argon, cooled to room temperature, and then high-purity hydrogen containing 1ppm carbon monoxide was introduced, and the gas flow rate was controlled at 400mL / min to test the wear-through of the adsorbent. Permeability curve and adsorption capacity.

[0083] After characterization of the sintered product by XPS, the active component is copper oxide; the adsorption capacity of the adsorbent for carbon monoxide reaches 84mL...

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Abstract

An adsorbent for deeply removing trace carbon monoxide in hydrogen comprises an active component and a high-specific-surface-area active carbon carrier loading the active component, and the active component is a monovalent copper or bivalent copper compound. The preparation method comprises the following steps of: (1) dissolving an active component precursor in water, and fully stirring to obtain a precursor solution; (2) dispersing and impregnating an activated carbon carrier with a high specific surface area by using the obtained precursor solution; (3) integrally drying the impregnated carrier and the precursor solution at the temperature of 40-100 DEG C; and (4) sintering the dried carrier in an inert atmosphere at the temperature of 150-300 DEG C for 3-6 hours to obtain the adsorbent. The adsorbent is uniform in active component dispersion, high in removal depth, high in selectivity, large in capacity, low in activation temperature, easy to regenerate and suitable for deeply removing carbon monoxide in hydrogen fuel of a fuel cell. The preparation method is simple in process, low in cost, free of active component loss in the preparation process and easy to industrially amplify.

Description

technical field [0001] The present invention relates to a carbon monoxide adsorbent and a preparation method thereof, more specifically, the present invention relates to an adsorbent for deep removal of carbon monoxide in hydrogen gas and a preparation method thereof, and a method for removing carbon monoxide in hydrogen gas by using the adsorbent method. Background technique [0002] The 21st century is the "hydrogen economy era", and fuel cell vehicles are one of the important carriers of hydrogen economy. At present, in addition to factors such as technology, service life, and cost of fuel cell vehicles, the supply of hydrogen sources is another important factor affecting the development of industrialization. For hydrogen standards for fuel cells, the newly promulgated GB / T 37244-2018 "Fuel for Proton Exchange Membrane Fuel Cell Vehicles-Hydrogen" has clear requirements for hydrogen. Fuel cell-grade hydrogen can be obtained from a wide range of channels, among which the...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01J20/28B01D53/02H01M8/0668C01B3/56
CPCB01J20/20B01J20/28057B01D53/02H01M8/0668C01B3/56B01D2257/502B01D2257/108Y02E60/50
Inventor 庞博吴玉超杜泽学荣峻峰
Owner CHINA PETROLEUM & CHEM CORP
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