阅读说明：本技术 一种净味保鲜材料及其制备方法与冰箱 (Odor-free fresh-keeping material, preparation method thereof and refrigerator ) 是由 陶晓彦 李芳� 肖剑 张中俊 于 2020-11-17 设计创作，主要内容包括：本发明公开了一种净味保鲜材料及其制备方法与冰箱。所述净味保鲜材料,包括：基材、负载在所述基材上的催化剂；所述催化剂包括：主催化剂；所述主催化剂包括水溶性二价铜盐、水溶性一价铜盐中的至少一种。本发明所述除臭保鲜材料在常温甚至低温(冰箱冷冻室-20℃)下也具有高活性,无需加热,无需光照,抗菌防霉性能好。(The invention discloses a smell-removing fresh-keeping material, a preparation method thereof and a refrigerator. The odor-free fresh-keeping material comprises: a substrate, a catalyst supported on the substrate; the catalyst comprises: a main catalyst; the main catalyst comprises at least one of water-soluble cupric salt and water-soluble cuprous salt. The deodorizing and fresh-keeping material has high activity at normal temperature and even low temperature (refrigerator freezing chamber-20 ℃), does not need heating or illumination, and has good antibacterial and mildew-proof properties.)

1. An odorless freshness-retaining material, comprising: a substrate, a catalyst supported on the substrate;

the catalyst comprises a main catalyst;

the main catalyst comprises at least one of water-soluble cupric salt and water-soluble cuprous salt.

2. The odor-reducing freshness-retaining material of claim 1, wherein said catalyst further comprises a co-catalyst;

the auxiliary catalyst comprises at least one of an acidic compound and an amino compound.

3. The savory freshness-retaining material of claim 1, wherein the water-soluble divalent copper salt comprises CuCl₂、CuSO₄、Cu(NO₃)₂、Cu(CH₃COO)₂At least one of;

the water-soluble monovalent copper salt comprises at least one of CuI and CuCl.

4. The fresh-keeping material of claim 1, wherein said main catalyst further comprises at least one of a cobalt ion compound, a zinc ion compound, and a nickel ion compound.

5. The savoury preservation material according to claim 2, wherein the acidic compound comprises at least one of citric acid, tartaric acid, boric acid, phosphoric acid, oxalic acid, hypochlorous acid.

6. The fresh-keeping material according to claim 2, wherein the amino-based compound comprises at least one of glycine, alanine, arginine, glutamic acid, histidine, lysine, serine, cysteine, 2-amino-3-methyl-1-propanol, 2-amino-2-methyl-1-propanol, and 2-amino-2-ethylpropanediol.

7. The fresh-keeping material of claim 1, wherein the substrate is a porous carrier material;

the porous carrier material is a ceramic honeycomb material which is formed by firing one or more of rare earth, activated carbon, clay and zeolite.

8. A method for preparing the odorless freshness retaining material according to any one of claims 1 to 7, comprising:

preparing the catalyst and water into a catalyst solution;

and soaking the base material in the catalyst solution, taking out the base material, and drying to obtain the odorless fresh-keeping material.

9. A refrigerator comprising the refreshing material according to any one of claims 1 to 7.

10. The refrigerator of claim 9, wherein the refrigerator comprises a refrigerator body, a freezing chamber disposed inside the refrigerator body, and the fresh food material is disposed at an air inlet or an air outlet of the freezing chamber.

Technical Field

The invention relates to the technical field of materials, in particular to a smell-removing and fresh-keeping material, a preparation method thereof and a refrigerator.

Background

At present, with the improvement of living standard and the enhancement of the application experience requirement of the refrigerator, the peculiar smell in the refrigerator is not accepted by people more and more, and the gas is not only smelly but also is harmful to health.

In order to remove toxic and harmful gases in refrigerators, various kinds of deodorizing techniques are applied to refrigerators. Such as high-voltage discharge to produce ozone for deodorization, photocatalyst for deodorization, activated carbon for adsorption for deodorization, catalyst for deodorization, etc. The high-voltage discharge deodorization requires electricity consumption and has a good sterilization effect, but the odor purification effect is general, and high-concentration ozone can cause harm to human health. The photocatalyst deodorization needs to be additionally provided with an ultraviolet lamp, the electricity consumption is also needed, the ultraviolet ray can accelerate the aging of the plastic, and the odor purification effect is not ideal. The activated carbon is easy to saturate in deodorization, and bacteria and mould can also propagate and smell on the activated carbon to cause secondary pollution. Although there are many catalysts for deodorization at present, noble metals such as palladium, platinum and silver are generally used, and the deodorizing effect is not satisfactory, and the catalyst is easily deteriorated and easily saturated.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a smell-removing and fresh-keeping material, a preparation method thereof and a refrigerator, and aims to solve the problem that the existing smell-removing technology is high in energy consumption or cost.

An odorless freshness-retaining material, comprising: a substrate, a catalyst supported on the substrate;

the catalyst comprises a main catalyst;

the main catalyst comprises at least one of water-soluble cupric salt and water-soluble cuprous salt.

The odor-free fresh-keeping material, wherein the catalyst also comprises an auxiliary catalyst;

the auxiliary catalyst comprises at least one of an acidic compound and an amino compound.

The odor-free fresh-keeping material, wherein the water-soluble cupric salt comprises CuCl₂、CuSO₄、Cu(NO₃)₂、Cu(CH₃COO)₂At least one of;

the water-soluble monovalent copper salt comprises at least one of CuI and CuCl.

The main catalyst also comprises at least one of cobalt ion compound, zinc ion compound and nickel ion compound.

The odorless fresh-keeping material, wherein the acidic compound comprises at least one of citric acid, tartaric acid, boric acid, phosphoric acid, oxalic acid and hypochlorous acid.

The odor-free fresh-keeping material is characterized in that the amino compound comprises at least one of glycine, alanine, arginine, glutamic acid, histidine, lysine, serine, cysteine, 2-amino-3-methyl-1-propanol, 2-amino-2-methyl-1-propanol and 2-amino-2-ethylpropanediol.

The odor-free fresh-keeping material is characterized in that the base material is a porous carrier material;

the porous carrier material is a ceramic honeycomb material which is formed by firing one or more of rare earth, activated carbon, clay and zeolite.

A method for preparing the odorless fresh-keeping material, which comprises the following steps:

preparing the catalyst and water into a catalyst solution;

and soaking the base material in the catalyst solution, taking out the base material, and drying to obtain the odorless fresh-keeping material.

A refrigerator comprising an odorless freshness material as described above.

The refrigerator includes: the refrigerator comprises a refrigerator body and a freezing chamber arranged in the refrigerator body, wherein the odor-purifying and fresh-keeping material is arranged at an air inlet or an air outlet of the freezing chamber.

Has the advantages that: the odor-free fresh-keeping material (deodorization fresh-keeping material) has high activity at normal temperature even at low temperature (refrigerator freezing chamber-20 ℃), does not need heating or illumination, and has good antibacterial and mildew-proof properties.

Drawings

Fig. 1 is a schematic structural view of a refrigerator according to the present invention.

In figure 1, 1-refrigerator body, 2-air duct, 3-refrigerator evaporator, 4-odor-purifying and fresh-keeping material, 5-electric air door, 6-circulating fan and 7-freezing chamber.

Detailed Description

The invention provides a smell-removing and fresh-keeping material, a preparation method thereof and a refrigerator, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment of the invention provides a smell-removing and fresh-keeping material, which comprises the following components: a substrate, a catalyst supported on the substrate;

the catalyst comprises: a main catalyst;

the main catalyst comprises: at least one of a water-soluble divalent copper salt and a water-soluble monovalent copper salt.

The invention provides a normal-temperature catalytic deodorizing material which has the advantages of ideal odor-removing effect, lower cost, low energy consumption, safety and reliability.

The main active ingredients of the catalyst are water-soluble metal salts, and the catalyst specifically comprises the following components: water soluble cupric salt, water soluble cuprous saltAt least one of (1). The water-soluble metal salt has hygroscopicity, and after the water-soluble metal salt is placed in the air to absorb moisture, a very thin metal salt solution liquid film is formed on the surface of the base material, so that the liquid-gas phase catalytic reaction is carried out on the water-soluble metal salt and the peculiar smell gas and the toxic and harmful gas. In particular, the catalytic reaction is carried out on the surface of a liquid film or in a liquid phase, wherein metal ions, such as Cu, in the interior of the liquid film²⁺Can be diffused to the surface of the liquid film to react with peculiar smell gas or harmful gas on the surface of the liquid film, thereby realizing the effects of deodorization and freshness preservation. In addition, the water-soluble gas can be dissolved in the liquid film to complete the reaction in the liquid phase, thereby greatly improving the utilization rate and catalytic activity of the catalyst. Meanwhile, due to the porous adsorption characteristic of the base material, liquid films formed on the base material cannot form liquid drops which drift out along with air flow, and secondary pollution is avoided.

The main catalyst can remove mercaptan substances such as trimethylamine, ammonia, methyl mercaptan, ethanethiol and the like, and alkaline gases such as aldehyde pollutants such as formaldehyde, acetaldehyde and the like.

The deodorizing and fresh-keeping material has high activity at normal temperature and even low temperature (refrigerator freezing chamber-20 ℃), does not need heating or illumination, and has good antibacterial and mildew-proof properties. It can be seen that the present invention has the greatest features of high catalytic activity and long acting. The deodorizing and fresh-keeping material has better effect of removing common odors containing sulfur and nitrogen than hopcalite.

The active component of the catalyst (catalytic material) of the present invention is a water-soluble metal salt, such as a water-soluble copper salt. Specifically, the main catalyst comprises monovalent copper ions and salts of divalent copper ions. In one embodiment of the present invention, the water-soluble divalent copper salt comprises: CuCl₂、CuSO₄、Cu(NO₃)₂、Cu(CH₃COO)₂At least one of; the water-soluble monovalent copper salt comprises: at least one of CuI and CuCl.

In one embodiment of the present invention, the present invention prepares the above water-soluble monovalent copper composition by a method comprising: the ligand sodium diethyldithiocarbamate (DDTC) and water-soluble cupric saltSuch as copper chloride (CuCl)₂) Or copper sulfate (CuSO)₄) Reducing agents such as sodium sulfite (Na)₂SO₃) Or sodium bisulfite (NaHSO)₃) The ratio (molar ratio, such as: DDTC: na (Na)₂SO₃：CuCl₂2: 1: 2, the reducing agent may be added in excess) to water and a monovalent copper composition is synthesized in aqueous solution.

Wherein, CuCl₂With Na₂SO₃The chemical reaction process for generating CuCl comprises the following steps:

CuCl₂+Na₂SO₃+H₂O→2CuCl+Na₂SO₄+2HCl。

in addition, the procatalyst also includes other metal compounds, such as: in one embodiment of the present invention, the main catalyst further comprises: at least one of cobalt ion compound, zinc ion compound, and nickel ion compound. Specifically, the cobalt ion compound may be cobalt chloride (CoCl) which is easily soluble in water and deliquescent₂) The zinc ion compound may be a highly deliquescent zinc chloride (ZnCl)₂) The nickel ion compound may be deliquescent nickel chloride (NiCl)₂)。

In one embodiment of the present invention, the catalyst further comprises: an auxiliary catalyst. The auxiliary catalyst is matched with the main catalyst to improve the odor purifying effect. For example, the helper catalyst includes: at least one of an acidic compound and an amino compound. Wherein, the acidic compound is a compound with the pH value of less than 7 in aqueous solution, and can be organic acid or inorganic acid; the amino compounds refer to compounds containing amino groups. Specifically, the acidic compound is capable of providing an acidic reaction environment for a liquid film formed on the substrate; the amino compound itself has a certain deodorizing effect, and can remove acidic gases such as sulfur dioxide.

In one embodiment of the present invention, the acidic compound comprises: at least one of citric acid, tartaric acid, boric acid, phosphoric acid, oxalic acid, and hypochlorous acid.

In one embodiment of the present invention, the amino-based compound includes: amino acid deodorant substances, amino alcohol deodorant substances; wherein the amino acid deodorant substance comprises one or more of glycine, alanine, arginine, glutamic acid, histidine, lysine, serine and cysteine; the amino alcohol deodorant comprises at least one of 2-amino-3-methyl-1-propanol, 2-amino-2-methyl-1-propanol and 2-amino-2-ethyl propylene glycol.

The substrate is used as a carrier material of the catalyst. In one embodiment of the invention, the substrate is a porous support material. The porous carrier material refers to a material with gaps, which has a large specific surface area and can load more catalysts; moreover, the pore channels in the porous material can be used as passages of the peculiar smell gas, so that the contact area of the catalyst and the peculiar smell gas can be increased. Specifically, the porous carrier material is a ceramic honeycomb material prepared by firing one or more of rare earth, activated carbon, clay and zeolite.

In one embodiment of the invention, the catalyst of the odor-free fresh-keeping material comprises 20 to 30 parts by weight of a main catalyst; 5-10 parts of auxiliary catalyst.

The embodiment of the invention provides a preparation method of the odor-free fresh-keeping material, which comprises the following steps:

s100, preparing the catalyst and water into a catalyst solution;

s200, soaking the base material in the catalyst solution, taking out the base material, and drying to obtain the odorless fresh-keeping material.

The preparation process of the odor-free fresh-keeping material is simple, the preparation is easy, and the base material can be repeatedly used; in addition, the invention does not contain organic or inorganic binder, thereby reducing the manufacturing cost.

In the step S100, a catalyst is dissolved in water to form a catalyst solution.

Specifically, S100 includes: dissolving the main catalyst and the auxiliary catalyst in distilled water, and stirring uniformly to prepare a catalyst solution. Wherein the catalyst comprises a main catalyst and an auxiliary catalyst, and concretely,the main catalyst comprises: CuCl₂、CuSO₄、Cu(NO₃)₂、Cu(CH₃COO)₂Or at least one of CuI and CuCl; and at least one of a cobalt ion compound, a zinc ion compound, and a nickel ion compound. The helper catalyst includes: acidic compound, amino acid deodorant, and amino alcohol deodorant.

In one embodiment of the present invention, the catalyst solution comprises, by weight percent:

main catalyst: 20 to 30 percent

Auxiliary catalyst: 5-10 percent

Distilled water: 60 to 75 percent.

The 200 is a step of supporting a catalyst on a substrate. . The base material can adsorb the catalyst in the solution in the soaking process, and after drying, a catalyst layer is loaded on the surface of the base material, so that the odor-free fresh-keeping material is prepared.

Specifically, S200 is to soak the base material in the solution for 3-4 hours, then to take the base material out, and to dry the base material at 100-280 ℃ for about 2 hours, so as to obtain the odorless fresh-keeping material.

In the 200, the base material is a porous carrier material, and specifically may be a ceramic honeycomb material formed by firing one or more of rare earth, activated carbon, clay and zeolite. The honeycomb material can contain more catalyst solution in the soaking process, and can load more catalyst at one time in the drying process.

In an embodiment of the present invention, the S200 further includes: and soaking the odor-free fresh-keeping material obtained by drying in the catalyst solution for multiple times to increase the thickness of the catalyst layer on the surface of the base material.

After S200, further comprising:

s300, cutting the prepared odorless fresh-keeping material. Specifically, the odorless freshness retaining material (odorless deodorizing material) of a predetermined size can be obtained by cutting the odorless freshness retaining material in a desired size.

The preparation method of the odor-free fresh-keeping material comprises the steps of preparing a deodorizing effective component solution, soaking the porous material in the deodorizing effective component solution, and drying to obtain a deodorizing composite material; wherein the soaking time is 3-4 h, the drying temperature is 100-280 ℃, and the drying time is about 2 h; the mass fraction of the deodorization effective component in the deodorization effective component solution is 5% -15%, and the mass ratio of the porous material to the deodorization effective component solution is 1: 1.5-1: 3. The preparation method of the odorless fresh-keeping material can prepare the odorless fresh-keeping material with good deodorization effect

The embodiment of the invention provides a refrigerator, which comprises the odor-removing and freshness-keeping material.

The refrigerator is a smell-removing fresh-keeping refrigerator. In the refrigerator, the odor-purifying and fresh-keeping material can absorb peculiar smell gas and harmful gas in the refrigerator, and can realize the odor-purifying and deodorizing effect in the refrigerator.

In one embodiment of the present invention, as shown in fig. 1, the refrigerator includes: refrigerator box 1, establish the inside freezer 7 of refrigerator box 1, wherein, still include: and the odor-free fresh-keeping material 4 is arranged at an air inlet or an air outlet of the freezing chamber 7.

Specifically, the refrigerator includes: refrigerator box 1 sets up freezer 7 in refrigerator box 1 freezer 7 pass through the air intake of freezer and the wind channel 2 of the air outlet intercommunication of freezer 7 be provided with evaporimeter 3 and circulating fan 6 in the wind channel 2 the air outlet department of freezer 7 sets up fresh-keeping material of odor purification 4 the air inlet department of freezer 7 sets up electronic air door 5.

In the refrigerator structure, the fresh-keeping material of pure flavor 4 sets up in 7 air outlet positions in freezer (walk-in) 7, and when the refrigerator refrigeration, the compressor work, 6 operations of circulating fan, electric air door 5 opens simultaneously, under circulating fan 6's drive, the peculiar smell gas flow through high-efficient pure flavor material 4 in freezer 7, and the gas after the purification becomes the fresh gas of low temperature behind evaporimeter 3, flows into freezer 7 through electric air door 5 again, refrigerates refrigerator freezer 7. Through the mode, the extremely-fast smell purification effect of the refrigerator is achieved on the basis that the structure of the refrigerator is not changed and too much cost is not increased.

The technical solution of the present invention is specifically described below by specific examples.

Example 1

1. The formula is as follows:

the catalyst solution comprises the following components in percentage by weight:

main catalyst: 30 percent of

Auxiliary catalyst: 10 percent of

Distilled water: 60 percent.

The main catalyst comprises the following components in percentage by weight: CuCl₂ 40％、CuSO₄ 10％、Cu(NO₃)₂10％、Cu(CH₃COO)₂10 percent of CuCl, 10 percent of cobalt chloride and 10 percent of zinc chloride.

The helper catalyst includes: 40% of citric acid, 15% of tartaric acid, 10% of glycine, 10% of alanine, 10% of arginine, 5% of 2-amino-3-methyl-1-propanol, 5% of 2-amino-2-methyl-1-propanol and 5% of 2-amino-2-ethyl propylene glycol.

The substrate is honeycomb structure porous ceramic prepared by adopting kaolin.

2. Preparation of odorless fresh-keeping material

Preparing the catalyst and water into a catalyst solution;

soaking the base material in the solution for 3 hours, then taking out the base material, and drying the base material at the temperature of 100 ℃ for about 2 hours to obtain the odorless fresh-keeping material.

And cutting the odor-free fresh-keeping material according to the required size of 10cm multiplied by 10cm to obtain the odor-free deodorizing material with the preset size.

Example 2

1. The formula is as follows:

the catalyst solution comprises the following components in percentage by weight:

main catalyst: 30 percent of

Auxiliary catalyst: 10 percent of

Distilled water: 60 percent.

The main catalystThe agent comprises the following components in percentage by weight: CuCl₂ 40％、CuSO₄ 10％、Cu(NO₃)₂10％、Cu(CH₃COO)₂10 percent of CuCl, 10 percent of cobalt chloride and 10 percent of zinc chloride.

The helper catalyst includes: 40% of citric acid, 15% of tartaric acid, 10% of glycine, 10% of alanine, 10% of arginine, 5% of 2-amino-3-methyl-1-propanol, 5% of 2-amino-2-methyl-1-propanol and 5% of 2-amino-2-ethyl propylene glycol.

The substrate is honeycomb structure porous ceramic prepared by adopting kaolin.

2. Preparation of odorless fresh-keeping material

Preparing the catalyst and water into a catalyst solution;

soaking the base material in the solution for 4 hours, then taking out the base material, and drying the base material at the temperature of 280 ℃ for about 2 hours to obtain the odorless fresh-keeping material.

And cutting the odor-free fresh-keeping material according to the required size of 10cm multiplied by 10cm to obtain the odor-free deodorizing material with the preset size.

Example 3

1, formula:

the catalyst solution comprises the following components in percentage by weight:

main catalyst: 30 percent of

Auxiliary catalyst: 10 percent of

Distilled water: 60 percent.

The main catalyst comprises the following components in percentage by weight: CuCl₂ 40％、CuSO₄ 10％、Cu(NO₃)₂10％、Cu(CH₃COO)₂10 percent of CuCl, 10 percent of cobalt chloride and 10 percent of zinc chloride.

The helper catalyst includes: 40% of citric acid, 15% of tartaric acid, 10% of glycine, 10% of alanine, 10% of arginine, 5% of 2-amino-3-methyl-1-propanol, 5% of 2-amino-2-methyl-1-propanol and 5% of 2-amino-2-ethyl propylene glycol.

The substrate is honeycomb structure porous ceramic prepared by adopting kaolin.

2. Preparation of odorless fresh-keeping material

Preparing the catalyst and water into a catalyst solution;

soaking the base material in the solution for 3.5 hours, then taking out the base material, and drying the base material at the temperature of 180 ℃ for about 2 hours to obtain the odorless fresh-keeping material.

And cutting the odor-free fresh-keeping material according to the required size of 10cm multiplied by 10cm to obtain the odor-free deodorizing material with the preset size.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.