KR20160104284A - Ethylene gas absorbent with improved efficiency for removing ethylene gas and process for producing thereof - Google Patents
Ethylene gas absorbent with improved efficiency for removing ethylene gas and process for producing thereof Download PDFInfo
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- KR20160104284A KR20160104284A KR1020150027082A KR20150027082A KR20160104284A KR 20160104284 A KR20160104284 A KR 20160104284A KR 1020150027082 A KR1020150027082 A KR 1020150027082A KR 20150027082 A KR20150027082 A KR 20150027082A KR 20160104284 A KR20160104284 A KR 20160104284A
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- silica
- ethylene gas
- potassium permanganate
- water
- present
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B7/148—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
Abstract
The present invention relates to an ethylene gas absorbent having improved ethylene gas removing efficiency and an improved process for producing the same. The ethylene gas absorbent having improved ethylene gas removing efficiency according to the present invention comprises a porous silica supporting a potassium permanganate (KMnO 4 ) Wherein the potassium permanganate solution is prepared by dissolving potassium permanganate in water at 70 to 100 캜 and the porous silica is calcined at a temperature between 400 캜 and 800 캜 to remove bonded water in the silica, .
The ethylene gas absorbent of the present invention having the above-described ethylene gas removing efficiency of the present invention uses fired silica having a potassium permanganate carrier serving as a catalyst in a reaction for removing ethylene gas and firing at a specific temperature to remove bonding water. The porous structure of the silica capable of absorbing moisture is capable of supporting a large amount of the ethylene gas absorbent by removing the bonding water without changing the structure of the porous silica so as to promote the activity of the supported substance to improve the efficiency of removing the ethylene gas And the ethylene gas and oxygen in the wrapping paper generated from the food can be effectively removed at an early stage to enhance the preservability of the food, thereby solving the problems in the prior art described above.
Description
The present invention relates to an ethylene gas absorbent having an improved efficiency of removing ethylene gas and a method of producing the same. More particularly, the present invention relates to a structure capable of supporting a large amount of ethylene gas absorbent by removing bonded water without changing the porous structure of silica The present invention relates to an ethylene gas absorbent having improved ethylene gas removal efficiency and capable of increasing the storage period of foods such as agricultural products by enhancing the efficiency of ethylene gas removal by promoting the activity of the supported substance.
Changes in food patterns and the development of the food industry have led to an explosion in the distribution of agricultural products such as vegetables and fruits. However, such agricultural products such as vegetables and fruits continue to be respiratory even after harvesting. During the storage period, such respiration causes agricultural products to wilt or dry. In addition, the agricultural products are naturally aged and softened, As the quality changes and during the ripening, vegetables and fruits generate gaseous gases such as ethylene (C 2 H 4 ) and oxygen (O 2 ), which cause further aging of vegetables and fruits , Resulting in the problem that the vegetables and fruits soften and become corrupted due to the action of microorganisms. In addition, the agricultural products are wilted and dried not only by the above-described aging phenomenon but also by the vaporizing action occurring on the surface thereof. Since the vaporizing action is closely related to the respiratory action, the quality change of the agricultural products is greatly influenced by the respiratory action .
Therefore, in order to prevent the agricultural products from being easily deteriorated by respiration during the distribution process, a method of storing the agricultural products in a storage room kept in a low temperature and high humidity condition when the agricultural products are distributed is used, There is a problem in that various kinds of equipments are needed to make the agricultural products stored in the storage room suddenly deteriorate when the agricultural products are exposed to the room temperature and they are not completely preserved even in the storage rooms .
In this way, it has become an important task to preserve fresh produce for a long period as long as possible during the distribution process, and to preserve it without deterioration during the distribution period. Therefore, in order to meet the necessity of long- Or airtight containers made of the same material as plastics or the like.
However, despite the above-mentioned method, ethylene gas and oxygen generated from agricultural products are not removed and remain in the package, which is an important factor that makes it difficult to store and distribute agricultural products freshly. That is, in order to distribute, as described above, it must be packed and circulated in an enclosed space. Ethylene gas is generated in the box, which is an enclosed space in which agricultural products are packed, to stay there and accelerate the corruption of agricultural products. Gas is generated directly from the agricultural products and remains in the packaging unit, which makes it difficult to remove them effectively. Generally, there are two methods for removing ethylene, one of which is a forced circulation by a mechanical device and the other is a method of adsorbing and removing ethylene gas by a packing unit. However, the mechanical method is not effective in eliminating ethylene gas because it gives time to contact with agricultural products if the agricultural products are packed.
Therefore, a method of adsorbing and removing an ethylene gas has been widely used as an effective method, and activated carbon, potassium permanganate, zeolite, and ozone are known as substances for removing ethylene gas. However, since activated carbon has a strong effect on the removal of odor, its performance deteriorates in the absorption of ethylene gas. Therefore, zeolite is generally used as a primary filter in a mechanical removal method. Zeolite is effective as a porous material for adsorption, , There is also a problem in terms of uniformity of the material, and uniform performance is difficult to expect. On the other hand, ozone has a strong effect as a material for separating ethylene gas, but there is a problem that it is necessary to judge whether it is installed depending on price, safety, and installation object. Therefore, potassium permanganate, which has the advantage of being able to chemically bond with ethylene gas to form a chemical bond and reliably remove it, was mainly used. However, potassium permanganate itself can not be effectively used and must be used on a separate carrier. For example, Korean Patent Laid-Open Publication No. 1998-071996 discloses a method of using potassium permanganate that is effective for removing ethylene gas, such as that described in " Korean Patent Laid-Open Publication No. 1998-071996 "in which silver and zinc are supported on a zeolite carrier by ion exchange, wt.% powder, followed by mixing with potassium permanganate powder to prepare a slurry, followed by drying to produce a leading agent having a water content of 20 wt% or less, preferably 12 wt% or less. "Korean Patent Publication No. 1999 -0086361, "a method of mixing potassium permanganate prepared in the first step and zeolite having a predetermined size of pores in a predetermined weight ratio by dissolving potassium permanganate in distilled water at a predetermined weight ratio, A second step of preparing potassium permanganate-supported zeolite, a second step of adding potassium permanganate-supported zeolite to distilled water, A fourth step of washing the potassium permanganate-supported zeolite washed with water from the third step at a predetermined temperature for a predetermined period of time, a fourth step of pulverizing and drying the dried potassium permanganate-supported zeolite from the fourth step, And a sixth step of mixing the activated carbon and iron in the atomized adsorbent material from the fifth step at a constant ratio and shaping the particles into a predetermined size. However, in the conventional method including the above-mentioned patent invention, a method of using a zeolite or diatomaceous earth as a carrier has been proposed. Since the bed of zeolite and diatomaceous earth has a limited space that can be adsorbed in the porous space, (Korean Patent Publication No. 2011-0056146) discloses a method of adding silica (SiO 2 x H 2 O) as a carrier to a potassium permanganate solution prepared by dissolving potassium permanganate (KMnO 4) And an ethylene gas absorbent which is cooled to form a powder (powder) containing 50 to 60% of water and having a particle size of 150 to 200 mesh ".
However, the diatomite used for the above purpose has a surface area of 20 to 30 m 2 / g and a surface area of 150 to 160 m 2 / g of silica. Therefore, in view of the characteristics of such an inorganic carrier, there is a problem that the water absorbing ability of silica is high and the proper amount of the ethylene gas absorbent can not be supported, and the efficiency of ethylene gas removal is not greatly increased.
The inventors of the present invention have conducted intensive studies to solve the above problems and have found that a structure capable of supporting a large amount of ethylene gas absorbent without changing the porous structure of silica capable of absorbing a large amount of water Thereby completing the invention.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned technical problems in the prior art, and it is a main object of the present invention to provide a porous silica structure capable of absorbing a large amount of water, Of the ethylene gas absorbing agent can be carried and the activity of the supported substance is promoted to improve the ethylene gas removing efficiency.
Another object of the present invention is to provide a method for more easily producing an ethylene gas absorbent having improved ethylene gas removal efficiency having the above excellent properties.
The present invention may also be directed to achieving other objects that can be easily derived by those skilled in the art from the overall description of the present specification, other than the above-described and obvious objects.
In order to accomplish the object of the present invention, the inventors of the present invention have found that the structural change of the silica according to the treatment temperature can be detected, and that a temperature condition capable of removing only the coupler of silica is required, The bonding agent is not removed at a temperature of 400 ° C or lower, and the bonding group is removed at 800 ° C or higher. At the same time, the porous structure is collapsed. This results in the production of silica which can not contain a large amount of water, Can not be developed. Thus, the object of the present invention can be achieved.
In order to accomplish the above object, the present invention provides an ethylene gas absorbent having improved ethylene gas removal efficiency;
An ethylene gas absorbent prepared by allowing a potassium permanganate (KMnO 4 ) solution to be supported on porous silica,
The potassium permanganate solution is prepared by dissolving potassium permanganate in water at 70 to 100 ° C and the porous silica is calcined silica at a temperature of 400 to 800 ° C to remove bonding water in the silica.
According to another aspect of the present invention, the fired silica is characterized by using a mixture of sepiolite (Si 12 Mg 8 O 10 (OH 2 ) 4 .8H 2 O).
According to another aspect of the present invention, the fired silica is obtained by firing silica obtained by impregnating porous silica with water containing a transition metal catalyst at a temperature of 400 ° C to 800 ° C.
According to another embodiment of the present invention, the potassium permanganate solution and the calcined silica are mixed at a ratio of 60:40 by weight.
According to another aspect of the present invention, there is provided a method of producing an ethylene gas absorbent having improved ethylene gas removal efficiency, comprising:
Dissolving potassium permanganate (KMnO 4 ) powder in boiling water at 70 to 100 ° C to prepare potassium permanganate solution;
Calcining the porous silica at a temperature between 400 ° C. and 800 ° C. to obtain fired silica from which bonded water in the silica has been removed;
Uniformly mixing the potassium permanganate solution obtained in the step and the fired silica at a predetermined ratio; And
And drying the mixture at a temperature of 80 to 100 DEG C in a drier so that the moisture content of the mixture does not exceed 10%
Here, the silica is characterized in that amorphous porous silica is used.
According to another aspect of the present invention, there is provided an ethylene gas absorbent having improved ethylene gas removal efficiency.
An ethylene gas absorbent prepared by allowing a solution of potassium permanganate (KMnO 4 ) to be supported on porous synthetic resin, and the mixture is molded into a package,
Wherein the package is formed by mixing 5 to 20 parts by weight of an ethylene gas absorbent into 80 to 95 parts by weight of a synthetic resin and molding the mixed mixture as a packaging material, wherein the ethylene gas absorbent is sintered at a temperature of 400 to 800 DEG C (Sepiolite, Si 12 Mg 8 O 10 (OH 2 ) 4 · 8H 2 O) was added to the fired silica from which the bonding water in the silica was removed, and potassium permanganate obtained by dissolving potassium permanganate in water at 70 to 100 ° C. And a solution obtained by mixing the above components.
The ethylene gas absorbent of the present invention having the above-described ethylene gas removing efficiency of the present invention uses fired silica having a potassium permanganate carrier serving as a catalyst in a reaction for removing ethylene gas and firing at a specific temperature to remove bonding water. The porous structure of the silica capable of absorbing moisture can be modified to remove a large amount of the absorbent by removing the bonding water without changing the structure of the porous silica to improve the efficiency of the supported gas by promoting the activity of the supported material Thus, it is possible to effectively remove the ethylene gas and oxygen in the packaging paper initially generated from the food, thereby improving the preservability of the food, thereby solving the problems in the prior art as described above. In addition, the package according to another aspect of the present invention has the effect of allowing the packaging material to self-absorb and remove ethylene gas.
Hereinafter, the present invention will be described in more detail with reference to the preferred embodiments. However, it is needless to say that the scope of the present invention is not limited thereto.
In this specification, the present embodiments are provided to provide a complete disclosure of the present invention and to fully disclose the scope of the invention to a person having ordinary skill in the art to which the present invention belongs. It is only defined by the claims. Accordingly, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular forms include plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.
An ethylene gas absorbent having improved ethylene gas removal efficiency according to a preferred embodiment of the present invention is an ethylene gas absorbent prepared by supporting a potassium permanganate (KMnO 4 ) solution on porous silica, wherein the potassium permanganate solution is water And calcined silica in which the bonding water in the silica is removed by calcining the porous silica at a temperature between 400 ° C. and 800 ° C. may be used.
According to another preferred embodiment of the present invention, sepiolite (Si 12 Mg 8 O 10 (OH 2 ) 4 · 8H 2 O) may be mixed with the fired silica. The potassium permanganate solution according to the present invention functions as a catalyst to remove ethylene gas and oxygen generated from foods with carbon dioxide and moisture. In order to effectively break ethylene, contact between air and potassium permanganate must be maximized For this purpose, sepiolite was used as a porous auxiliary in the present invention. The sepiolite according to the present invention has an effect of increasing the contact surface with air by enclosing with potassium permanganate, and the removal efficiency of ethylene is unexpectedly increased.
According to another preferred embodiment of the present invention, the fired silica may be obtained by firing silica obtained by impregnating porous silica with water containing a transition metal catalyst at a temperature of 400 ° C to 800 ° C.
The transition metal catalyst used in the ethylene absorbent according to the preferred embodiment of the present invention is not particularly limited as long as it can function as a catalyst of the oxidation reaction of the present invention. Specific examples of such a transition metal catalyst include organic acid salts, phosphates, nitrates, sulfates, oxides and hydroxides of transition metals. Here, examples of the transition metal contained in the transition metal catalyst include, but are not limited to, titanium, chromium, vanadium, manganese, iron, cobalt, nickel, copper and zinc. Examples of the organic acid include acetic acid, propionic acid, lauric acid, stearic acid, palmitic acid, 2-ethylhexanoic acid, neodecanoic acid, linolic acid, oleic acid, tosylic acid, capric acid and naphthenic acid , But are not limited thereto. The transition metal catalyst according to the present invention may preferably be a combination of these transition metals and an organic acid, and the transition metal is manganese, iron, cobalt, nickel or copper, and the organic acid is acetic acid, stearic acid, oleic acid, Naphthenic acid may be more preferable. The compounding amount of these transition metal catalysts can be suitably set according to the kind of the compound or the transition metal catalyst to be used and the desired performance, and is not particularly limited.
According to another embodiment of the present invention, the potassium permanganate solution and the calcined silica may preferably be in a ratio of 60:40 on a weight basis.
According to a preferred embodiment of the present invention, the amorphous porous silica is used as the carrier of the ethylene gas absorbent of the present invention, and particularly the amorphous porous silica which is calcined between 400 and 800 ° C is used, It is possible to provide an ethylene gas absorbent capable of rapidly removing ethylene gas and oxygen in the wrapping paper as a result of which the water vaporization rate is fast because the activity can be increased.
According to another preferred embodiment of the present invention, the amorphous porous silica having increased water activity as described above is formed by firing an inorganic silica carrier at 400 to 800 ° C to remove bonded water bound to amorphous porosity, In order to prevent the water activity from occurring.
If the inorganic carrier is calcined at a temperature lower than 400 ° C., the bound water is not sufficiently removed at the time of calcination, and the water content is increased again at room temperature to increase the water content. Thus, the potassium permanganate solution serving as the ethylene gas- Therefore, there is a problem in that the efficiency of removing the ethylene gas can not be improved as much as desired, which is not preferable.
When the inorganic carrier is calcined at a temperature higher than 800 ° C, the porosity of the silica is collapsed and the absorption amount of silica is rather reduced. That is, the absolute amount that can contain the potassium permanganate solution is reduced, and the ethylene removal rate is delayed, which is undesirable.
As described above, silica used according to the present invention has a disadvantage in that it contains a large amount of water because a strong bonding group is formed unlike diatomaceous earth, Therefore, in order to remove the disadvantage of silica, it is necessary to prepare an inorganic carrier having excellent water activity by removing a bonding group of silica. For this purpose, in the present invention, silica is calcined at 400 to 800 ° C to remove the coupler And used as an inorganic carrier. Generally, if the silica is calcined at 400 ° C. or less, the moisture adsorbed in the silica is temporarily desorbed. However, when the silica is left in the air, moisture is adsorbed again. However, if the silica is calcined at a temperature of 400 ° C or higher, the bonded water is desorbed and the water does not re-bond even if it is left in the air. The water absorption capacity that silica can contain moisture changes into hydrophobic silica which can quickly evaporate water while containing water in the micropores of silica and reacts with ethylene gas and oxygen to make carbon dioxide The catalytic activity of the catalytic potassium permanganate is promoted, and as a result, an absorbent capable of rapidly removing ethylene gas and oxygen in the wrapping paper can be obtained.
On the other hand, if the silica is fired at a temperature higher than 800 ° C, the pores in the silica are collapsed, and the initial absorption amount of the silica is remarkably reduced, thereby losing the advantage of silica.
According to another embodiment of the present invention, the ethylene gas absorbent of the present invention constituted as described above can be packed in a general package. For example, an ethylene gas absorbent package according to an embodiment of the present invention can be obtained by filling the above-described ethylene gas absorbent of the present invention into an air permeable packaging material and packaging in the form of a bag or the like.
As the breathable packaging material usable in the present invention, a known packaging material having air permeability can be applied, and is not particularly limited. From the viewpoint of sufficiently manifesting the ethylene gas and the oxygen absorption effect, the breathable packaging material is preferably highly breathable, and the highly breathable packaging material used in the use of the ethylene gas absorbent is suitably used. Specific examples of the breathable packaging material include paper such as paper, paper, and rayon, pulp, cellulose, a nonwoven fabric using various fibers obtained from a synthetic resin, a plastic film or a perforated material thereof, Microporous films stretched after the addition, and films obtained by laminating two or more kinds selected from the microporous films. However, it is not limited to these films.
According to another preferred embodiment of the present invention, there is provided a method for producing potassium permanganate, comprising: preparing potassium permanganate solution by dissolving potassium permanganate (KMnO 4 ) powder in boiling water at 70 to 100 ° C; Calcining the porous silica at a temperature between 400 ° C. and 800 ° C. to obtain fired silica from which bonded water in the silica has been removed; Uniformly mixing the potassium permanganate solution obtained in the step and the fired silica at a predetermined ratio; And drying the mixture at a temperature of 80 to 100 DEG C in a drier so that the water content of the mixture does not exceed 10%. In the present invention, it is preferable that amorphous porous silica is used for the silica in order to improve the ethylene gas removal efficiency.
According to another preferred embodiment of the present invention, the ethylene gas absorbent having improved ethylene gas removing efficiency of the present invention is prepared by mixing an ethylene gas absorbent prepared by allowing a potassium permanganate (KMnO 4 ) solution to be supported on porous silica, Wherein the package is formed by mixing 5 to 20 parts by weight of an ethylene gas absorbent into 80 to 95 parts by weight of a synthetic resin and molding the mixed mixture as a packaging material, Sepiolite (Si 12 Mg 8 O 10 (OH 2 ) 4 · 8H 2 O) was added to the fired silica which had been fired at a temperature of between 70 ° C. and 100 ° C., and potassium permanganate And a potassium permanganate solution obtained by dissolving them.
As described above, the potassium permanganate solution acts as a catalyst to remove ethylene gas and oxygen generated from food by carbon dioxide and moisture. In order to effectively break ethylene, contact between air and potassium permanganate should be maximized To this end, sepiolite is added as a porous auxiliary agent. The sepiolite thus added is surrounded by potassium permanganate, thereby significantly increasing the contact surface with air.
Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. However, the embodiments of the present invention are provided to understand the present invention, and the present invention is not limited to the embodiments.
Example 1
In order to prepare an ethylene gas absorbent having improved ethylene gas removal efficiency according to the present invention, 5.75 kg of potassium permanganate (KMnO 4 ) powder was dissolved in 20.7 kg of boiled water at about 70 ° C to prepare a potassium permanganate solution. The amorphous porous silica was calcined at a temperature of 400 ° C to obtain fired silica having the bonded water in the silica removed. Then, the potassium permanganate solution obtained above and the fired silica were uniformly mixed at a weight ratio of 60:40 and dried in a drier at a temperature of about 80 to 100 ° C for about 4 hours to obtain a mixture in which the water content was 10% The ethylene gas absorbent was dried and packed to prepare an absorbent. The absorbent was measured for its ability to remove ethylene gas at room temperature and in a refrigerator (5 ° C) over time, and the results are shown in Table 1 below.
Example 2
An oxygen absorbent was prepared in the same manner as in Example 1 except that the firing temperature of the silica was changed to 500 ° C, and the oxygen removing ability was measured. The results are shown in Table 1 below.
Example 3
An oxygen absorber was prepared in the same manner as in Example 1 except that the firing temperature of the silica was changed to 600 ° C, and the oxygen removing ability was measured. The results are shown in Table 1 below.
Example 4
An oxygen absorbent was prepared in the same manner as in Example 1 except that the firing temperature of the silica was changed to 700 ° C, and the oxygen removing ability was measured. The results are shown in Table 1 below.
Example 5
An oxygen absorbent was prepared in the same manner as in Example 1 except that the firing temperature of the silica was changed to 800 ° C, and the oxygen removing ability was measured. The results are shown in Table 1 below.
Comparative Example 1
An ethylene gas absorbent was prepared in the same manner as in Example 1 except that the silica was used without being fired, and the ethylene gas removing ability was measured. The results are shown in Table 1 below.
Comparative Example 2
An oxygen absorbent was prepared in the same manner as in Example 1 except that the firing temperature of the silica was changed to 900 ° C, and the oxygen removing ability was measured. The results are shown in Table 1 below.
25 ℃
5 ℃
As can be seen from Table 1, the ethylene gas absorbents of Examples 1 to 5, in which silica was calcined at a constant temperature in accordance with the present invention, were evaluated in the same manner as in Comparative Example 1 using fired silica, It is found that the ethylene gas in the wrapping paper is more effectively removed in the atmosphere under normal temperature and refrigerated storage as compared with the ethylene gas absorbent of Comparative Example 2 using silica.
Although the present invention has been described in connection with several exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, to be.
Claims (6)
Wherein the potassium permanganate solution is prepared by dissolving potassium permanganate in water at 70 to 100 캜 and the porous silica is calcined silica calcined at a temperature between 400 캜 and 800 캜 to remove bonding water in the silica. An ethylene gas absorbent with improved removal efficiency.
Wherein the fired silica is a mixture of sepiolite (Si 12 Mg 8 O 10 (OH 2 ) 4 .8H 2 O).
Wherein the fired silica is obtained by fusing silica obtained by impregnating porous silica with water containing a transition metal catalyst at a temperature of 400 ° C to 800 ° C.
Wherein the potassium permanganate solution and the calcined silica have a weight ratio of 60:40.
Calcining the porous silica at a temperature between 400 ° C. and 800 ° C. to obtain fired silica from which bonded water in the silica has been removed;
Uniformly mixing the potassium permanganate solution obtained in the above step and the calcined silica at a ratio of 60:40 on a weight basis; And
And drying the mixture at a temperature of 80 to 100 DEG C in a drier so that the moisture content of the mixture does not exceed 10%
Wherein the silica is amorphous porous silica. The method for producing an ethylene gas absorbent according to claim 1, wherein the silica is amorphous porous silica.
Wherein the package is formed by mixing 5 to 20 parts by weight of an ethylene gas absorbent into 80 to 95 parts by weight of a synthetic resin and molding the mixed mixture as a packaging material, wherein the ethylene gas absorbent is sintered at a temperature of 400 to 800 DEG C (Sepiolite, Si 12 Mg 8 O 10 (OH 2 ) 4 · 8H 2 O) was added to the fired silica from which the bonding water in the silica was removed, and potassium permanganate obtained by dissolving potassium permanganate in water at 70 to 100 ° C. Wherein the ethylene gas adsorbent has an improved efficiency of removing ethylene gas.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101989703B1 (en) * | 2017-12-12 | 2019-06-14 | 한국식품연구원 | Process for removing harmful gas in cellar |
| KR102125872B1 (en) * | 2020-02-06 | 2020-06-23 | 안정호 | Green Restored Vegetable Green Soil Stabilizer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980071996A (en) | 1998-07-10 | 1998-10-26 | 정만규 | Manufacturing method of inorganic material for maintaining fresh fruit and flower |
| KR19990086361A (en) | 1998-05-27 | 1999-12-15 | 주덕영 | Adsorption material for maintaining freshness and manufacturing method |
| KR20110056146A (en) | 2009-11-20 | 2011-05-26 | 주식회사 립멘 | Ethylene gas absorbent and process for preparing thereof |
-
2015
- 2015-02-26 KR KR1020150027082A patent/KR20160104284A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990086361A (en) | 1998-05-27 | 1999-12-15 | 주덕영 | Adsorption material for maintaining freshness and manufacturing method |
| KR19980071996A (en) | 1998-07-10 | 1998-10-26 | 정만규 | Manufacturing method of inorganic material for maintaining fresh fruit and flower |
| KR20110056146A (en) | 2009-11-20 | 2011-05-26 | 주식회사 립멘 | Ethylene gas absorbent and process for preparing thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101989703B1 (en) * | 2017-12-12 | 2019-06-14 | 한국식품연구원 | Process for removing harmful gas in cellar |
| KR102125872B1 (en) * | 2020-02-06 | 2020-06-23 | 안정호 | Green Restored Vegetable Green Soil Stabilizer |
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