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Gas Adsorbents and Gas Adsorbent Sheets and Air Filters

A technology of gas adsorbents and flakes, which is applied in membrane filters, gas treatment, and other chemical processes. Effect of aldehyde removal performance

Active Publication Date: 2017-12-29
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aldehyde gas adsorbent of this proposal also has insufficient performance under dynamic conditions, as well as activated carbon, and has the problem of deterioration over time.

Method used

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  • Gas Adsorbents and Gas Adsorbent Sheets and Air Filters
  • Gas Adsorbents and Gas Adsorbent Sheets and Air Filters
  • Gas Adsorbents and Gas Adsorbent Sheets and Air Filters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] [Measurement methods]

[0070] (1) The loading amount of water-soluble acid hydrazide compound and the loading amount of the compound having a mercapto group in the functional group (parts by mass):

[0071] The difference between the mass of the gas adsorbent after impregnating and drying a liquid in which a water-soluble acid hydrazide compound and a compound having a mercapto group in a functional group is impregnated and dried, and the mass of the inorganic porous medium before impregnation and drying The difference was used to calculate the total loading amount, and the total loading amount was multiplied by the feed amount ratio of each component, converted into the loading amount with respect to the entire gas adsorbent, and then calculated.

[0072] (2) pH (hydrogen ion index) of the gas adsorbent:

[0073] 100 g of pure water at a temperature of 25° C. was impregnated with 5% by mass of the gas adsorbent, stirred gently, and left to stand for 10 minutes. The p...

Embodiment 2

[0204] As the gas absorbent, except for using the gas adsorbent B prepared above, the same air-permeable sheet and thermal fusion resin as in Example 1 were used, and the gas adsorbent sheet B was produced by the same manufacturing method as in Example 1. . The results are shown in Table 1.

Embodiment 3

[0206] As the gas absorbent, except for using the gas adsorbent C produced above, the gas-adsorbing sheet C was produced by the same manufacturing method as in Example 1, using the same air-permeable sheet and thermal fusion resin as in Example 1. . The results are shown in Table 1.

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Abstract

The present invention provides a gas adsorbent that can remove aldehydes with high efficiently while depressing aged degradation in aldehyde removal performance during storage. The gas adsorbent according to the present invention is a gas adsorbent including inorganic porous bodies in combination with a water-soluble acid hydrazide compound and a compound having a thiol-based functional group, with the latter compounds being supported on the former bodies. Cysteine is used as the compound having a thiol-based functional group.

Description

technical field [0001] The present invention relates to a gas adsorbent capable of efficiently removing aldehydes, a gas adsorbing sheet, and an air filter using the gas adsorbing sheet. Background technique [0002] There are various types of pollutants in the air, but among them, aldehydes such as acetaldehyde have become a big problem as pollutants. Acetaldehyde is a typical malodorous component contained in cigarette smoke and automobile exhaust, and the odor is easily felt even at a low concentration. [0003] Conventionally, to remove malodorous components in the air, activated carbon with large surface area and pore volume is generally used, but compared with other malodorous components, the equilibrium adsorption amount of acetaldehyde in activated carbon is remarkably small, so it has no practical performance. [0004] Here, as a means of improving the acetaldehyde adsorption-removal performance by activated carbon, a method of impregnating activated carbon with am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22A61L9/01A61L9/16B01D53/02B01J20/30
CPCB01D53/02B01D53/72B01D2239/0407B01D2252/2056B01D2253/106B01D2253/304B01D2253/306B01D2253/308B01D2257/70B01D2257/708B01D2259/4508B01D2259/4591B01J20/10B01J20/22B01J20/28004B01J20/28011B01J20/28028B01J20/28038B01J20/28064B01J20/28083B01J20/3204B01J20/3251B01J20/3293
Inventor 三好贤吾东由贵
Owner TORAY IND INC
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