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Efficient ethylene removal catalytic module as well as preparation method and application thereof

An ethylene and high-efficiency technology, which is applied in the field of high-efficiency ethylene removal catalytic modules and its preparation, can solve the problems of inability to integrate ethylene removal rate, impossibility of popularization and application, and high cost of use, and achieve stable properties, prevention of pollution, removal efficiency and removal rate high effect

Pending Publication Date: 2022-01-11
HISENSE(SHANDONG)REFRIGERATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of precious metal is expensive, and the cost of use is relatively high, so it cannot be widely used.
[0012] So far, none of the ethylene removal catalysts or catalysts used in refrigerators has the characteristics of fast ethylene removal rate, low price and cost, stable properties, and continuous and continuous reaction.

Method used

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  • Efficient ethylene removal catalytic module as well as preparation method and application thereof
  • Efficient ethylene removal catalytic module as well as preparation method and application thereof
  • Efficient ethylene removal catalytic module as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides a high-efficiency ethylene removal catalytic module, such as figure 1 As shown, the module is strip-shaped, and it is composed of a catalyst and a packaging bag for packaging the catalyst. The specification of the packaging bag is 20mm×100mm, which matches the gap size of the air outlet of the fruit and vegetable drawer of the refrigerator, and contains 3-4g of catalyst.

[0054] Wherein, the catalyst is composed of main catalyst, auxiliary catalyst, carrier and auxiliary curing material. Such as figure 2 As shown, the catalysts are spherical particles with a particle size 2 o 4 and MnCo 2 o 4 mixture of ZnCo 2 o 4 and MnCo 2 o 4 The mass ratio is 1:1. The auxiliary catalyst is a transition metal semiconductor compound, specifically a mixture of cuprous oxide and nickel oxide, and the mass ratio of cuprous oxide and nickel oxide is 1:1.

[0055] The preparation steps of the high-efficiency ethylene removal catalytic module are as foll...

Embodiment 2

[0068] This embodiment provides a high-efficiency ethylene removal catalytic module, which differs from Embodiment 1 only in that the noble metal oxides of the main catalyst are different, the components of the auxiliary catalyst are different, the mass ratio of the main catalyst to the auxiliary catalyst is different, and the main catalyst is different from the auxiliary catalyst. The mass ratio of the noble metal oxide to the ternary transition metal oxide of the catalyst is different, the addition amount of kaolin is different, and the others are the same.

[0069] In Example 2, the noble metal oxide is formed by mixing platinum oxide and palladium oxide at a mass ratio of 1:1, the cocatalyst is a mixture of zinc oxide, nickel oxide and copper oxide, and the mass of zinc oxide, nickel oxide and copper oxide The ratio is 1:1:1, the mass ratio of the main catalyst and the auxiliary catalyst is 1:4, the mass ratio of the noble metal oxide of the main catalyst and the ternary tr...

Embodiment 3

[0071] This embodiment provides a high-efficiency ethylene removal catalytic module, which differs from Embodiment 1 only in that the noble metal oxides of the main catalyst are different, the components of the auxiliary catalyst are different, the mass ratio of the main catalyst to the auxiliary catalyst is different, and the main catalyst is different from the auxiliary catalyst. The mass ratio of the noble metal oxide to the ternary transition metal oxide of the catalyst is different, the addition amount of kaolin is different, and the others are the same.

[0072] In embodiment 3, the precious metal oxide is platinum oxide, and the cocatalyst is the mixture of zinc oxide and nickel oxide, and the mass ratio of zinc oxide and nickel oxide is 1:1, and the mass ratio of main catalyst and auxiliary catalyst is 1:5, The mass ratio of the noble metal oxide to the ternary transition metal oxide of the main catalyst is 1:5, and the amount of kaolin added is 9% of the mass of the ca...

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Abstract

The invention discloses an efficient ethylene removal catalytic module which comprises a catalyst. The catalyst comprises a main catalyst and an auxiliary catalyst, the main catalyst contains transition metal elements and precious metal elements, and the auxiliary catalyst is a transition metal semiconductor compound. The catalyst can rapidly catalyze ethylene to be degraded into small molecular substances losing ripening acceleration capacity, and is stable in property, low in preparation cost and high in ethylene removal efficiency and removal rate, and reaction continuity and persistence are achieved.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping of fruits and vegetables, and in particular relates to a high-efficiency ethylene-removing catalytic module and its preparation method and application. Background technique [0002] Ethylene is a plant hormone, which has an important relationship with the quality deterioration and preservation of fruits and vegetables. The chlorophyll decomposition, fruit color change, fruit stalk delamination and fruit firmness decrease in fruits and vegetables are all related to ethylene. High ethylene concentration will strengthen the respiration of fruits and vegetables, and accelerate the process of ripening and aging. Therefore, the concentration of ethylene gas should be strictly controlled in the preservation of fruits and vegetables to minimize the impact on fruits and vegetables. [0003] At present, there are many methods for removing ethylene gas, such as: washing method, dilution method, adsorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01D53/86B01D53/72
CPCB01J23/8986B01J23/8953B01D53/8668
Inventor 鞠晓晨罗晨王磊胡哲王海燕
Owner HISENSE(SHANDONG)REFRIGERATOR CO LTD
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