JPS6193835A - Catalytic material for adsorbing and oxidizing low-molecular gas - Google Patents

Catalytic material for adsorbing and oxidizing low-molecular gas

Info

Publication number
JPS6193835A
JPS6193835A JP59216933A JP21693384A JPS6193835A JP S6193835 A JPS6193835 A JP S6193835A JP 59216933 A JP59216933 A JP 59216933A JP 21693384 A JP21693384 A JP 21693384A JP S6193835 A JPS6193835 A JP S6193835A
Authority
JP
Japan
Prior art keywords
molecular gas
capacity
low
ethylene
catalytic material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59216933A
Other languages
Japanese (ja)
Inventor
Mitsuo Matsui
松井 光男
Yasuo Oota
太田 保夫
Sueo Urushizaki
漆崎 末夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP59216933A priority Critical patent/JPS6193835A/en
Publication of JPS6193835A publication Critical patent/JPS6193835A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enhance not only the preservation capacity of vegetables and fruits but also the dehumidication capacity and deodorizing capacity of various objects, by forming a low-molecular gas adsorbing and oxidizing catalytic material by applying oxygen treatment, which acts an electromagnetic wave or ozone, to a base material comprising a microporous material. CONSTITUTION:A microporous material based on SiO2 such as zeolite or Oya stone are ground and a small amount of metal oxide such as TiO2, Al2O3, Fe2O3, CaO or Na2O is added to the ground material while the obtained composition is kneaded to prepare clay. This clay is granulated and molded into a shape having a proper size and preparatorily dryed at about 100 deg.C and subsequently sintered at 200-900 deg.C while the sintered granulated one is irradiated with an electromagnetic wave or passed through an ozone atmosphere to perform proper oxygen treatment to prepare a low-molecular gas adsorbing and oxidizing catalytic material. As the microporous material, one with a fine pore size of 2-2,800Angstrom is pref.

Description

【発明の詳細な説明】 発明の技術分野 本発明は、細長孔物質に酸素処理を行った除湿、脱臭、
殺菌材に関するもので、特に、その吸着、融媒作用によ
り、青果物の鮮度維持に格別な効果を有するものである
Detailed Description of the Invention Technical Field of the Invention The present invention relates to dehumidification, deodorization, and
It relates to a bactericidal agent, and in particular, it has an exceptional effect on maintaining the freshness of fruits and vegetables due to its adsorption and fusion medium effects.

従来技術と問題点 従来、活性炭やゼオライト等の細多孔材料を利用して、
除湿、脱臭剤として使用することは良く知られていると
ころである。
Conventional technology and problems Conventionally, using microporous materials such as activated carbon and zeolite,
It is well known that it is used as a dehumidifier and deodorizer.

また、前群食料品、特に野菜や果物等の青果物を貯蔵す
る場合、その保存性能は果実自体が発生するエチレンの
生成量に関係し、貯蔵庫の中におけるエチレンガスの除
去を行うことにより、飛躍的に長時間、鮮度を維持する
ことが出来ることが知られている。
In addition, when storing foodstuffs in the first group, especially fruits and vegetables such as vegetables and fruits, their storage performance is related to the amount of ethylene produced by the fruit itself. It is known that freshness can be maintained for a long time.

すなわち、エチレンの化学構造式はC2H4て空気より
も少し軽く、無色で甘いエーテルに似た香りのするガス
体である。果物の有する甘い芳香は、このエチレンだと
考えてよい。
In other words, the chemical structure of ethylene is C2H4, and it is a gas that is slightly lighter than air, colorless, and has a sweet, ether-like aroma. Ethylene can be thought of as the sweet aroma of fruits.

例えば、南方から輸入される未成熟のベナナは、エチレ
ンガス処理を行うことによって急激に成熟するのであI
バこのようにエチレンには果実の成熟を促進する作用を
有するのである。
For example, immature benana imported from the south matures rapidly by being treated with ethylene gas.
In this way, ethylene has the effect of promoting fruit ripening.

また、果物は、それ自体、エチレンを生成し成熟するの
で、密閉された貯蔵庫内においては、果物自体が生成す
るエチレンの密度が高まり、その結果、成熟が促進され
る。果物の鮮度は急激に低下する。
In addition, since fruits themselves produce ethylene and ripen, the density of the ethylene produced by the fruit itself increases in a closed storage, and as a result, ripening is promoted. The freshness of fruits decreases rapidly.

したがって、青果物の保鮮手段としては、如何にして青
果物のエチレン発生を抑えるか、如何にして発生したエ
チレンを除去するかという問題が生ずるのである。
Therefore, as a means to preserve the freshness of fruits and vegetables, the problem arises as to how to suppress the generation of ethylene in fruits and vegetables, and how to remove the generated ethylene.

そこで青果物の保存用鮮度維持材さして、数オングスト
ロームの細孔を有する炭素に、臭素を吸着させた活性炭
により、エチレンガスを除去し、鮮度の維持を行うこと
が、例えば特公昭55−50451号公報等にてすでに
公知となっているところである。 しかしながら、上記
公報に開示されたちのち、均一な細孔を有する活性炭の
製造そのものに制約を有し、一度飽和したものは再活性
化が不可能であり、最近の青果物貯蔵技術の発達に伴い
、より有効な鮮度維持法又は、鮮度保存剤の開発がn 
            必要とされているのが現状で
ある。
For example, Japanese Patent Publication No. 55-50451 discloses that as a freshness-maintaining material for preserving fruits and vegetables, activated carbon, which has pores of several angstroms and adsorbs bromine, is used to remove ethylene gas and maintain freshness. This is already publicly known. However, after being disclosed in the above publication, there were restrictions on the production of activated carbon with uniform pores, and once it was saturated, it was impossible to reactivate it, and with the recent development of fruit and vegetable storage technology, Development of more effective freshness maintenance methods or freshness preservatives is needed.
This is what is currently needed.

′[ したがって、本発明は廉価で優れた吸着、酸化触媒作用
を有する細多孔質材料により、青果物の保存は勿論のこ
と、各種の除湿、脱臭、酸化触媒作用に伴う殺菌作用を
含めた空気や流体の清浄化等に利用できる新規な材料を
提供することを目的とするものである。
′ [Therefore, the present invention uses a low-cost, fine-porous material that has excellent adsorption and oxidation catalytic effects to not only preserve fruits and vegetables, but also to preserve air, including various types of dehumidification, deodorization, and sterilization associated with oxidation catalytic effects. The purpose is to provide a new material that can be used for cleaning fluids, etc.

問題点を解決するための手段 本発明は、例えばゼオライトや大谷石等の細孔質(2〜
2800A)材料を基材として、これらを粉砕し、微量
の金属酸化物を添加し、混練焼結したもので、これに電
磁波又はオゾンを作用させた酸素処理を行って吸着作用
と酸化触媒作用を付与させたものである。
Means for Solving the Problems The present invention is directed to the use of porous materials such as zeolite and Oya stone.
2800A) material as a base material, which is crushed, added with a small amount of metal oxide, kneaded and sintered, and then subjected to oxygen treatment using electromagnetic waves or ozone to create adsorption and oxidation catalytic effects. It was granted.

以下、本発明の一実施例について説明する。An embodiment of the present invention will be described below.

これは、前述したゼオライトや大谷石等のSiO2を主
成分とする細多孔質材料(特に細孔の直径が2〜280
0Aのものが好ましい)を粉砕し、これに少量のTiO
2,Al2O3,Fe2e3.Cab。
This is a fine porous material (especially with a pore diameter of 2 to 280
0A is preferable), and add a small amount of TiO to this.
2, Al2O3, Fe2e3. Cab.

Na2O,等の金属酸化物を添加、混練した粘土を作り
、これを適当な大きさ、形状に造粒、造形して100℃
前後の温度で予備乾燥を行った後、200℃〜900℃
の温度で焼結したものに電磁波を照射するか、或はオゾ
ン雰囲気中を通過させて適当な酸素処理を行うのである
Make clay by adding metal oxides such as Na2O, knead it, granulate it into an appropriate size and shape, shape it, and heat it at 100°C.
After pre-drying at a temperature between 200℃ and 900℃
The sintered material is then irradiated with electromagnetic waves or passed through an ozone atmosphere to undergo appropriate oxygen treatment.

このような酸素処理をおこなうことにより、本発明の焼
結材は、本来細多孔質材料の有する吸着作用に、酸化触
媒作用が付加されることになるのである。
By performing such oxygen treatment, the sintered material of the present invention has an oxidation catalytic action added to the adsorption action originally possessed by the fine porous material.

本発明の他の実施例として、次に説明するものは無水硅
酸の一種であるクリストバライトに、少量の添加物を加
えて吸着作用及び酸化触媒作用をもたせたものである。
Another embodiment of the present invention, which will be described below, is made by adding a small amount of additives to cristobalite, which is a type of silicic anhydride, to give it adsorption and oxidation catalytic effects.

すなわち、無水硅酸5in2を主成分(50%以上含む
)とするクリストバライト粉末に、更に少量の石英と、
TiO2,Al2O3゜FezO3,Cab、NaO2
等の金属酸化物を添加し混練して粘土を作り、これを適
当な大きさ、形状に造粒、造形してioo℃前後の温度
で予備乾共を行った後、前述した実施例と同様の焼結、
酸ズ処理を行って酸化触媒作用を付加するのである。
That is, cristobalite powder whose main component is silicic anhydride 5in2 (containing 50% or more), a small amount of quartz,
TiO2, Al2O3゜FezO3, Cab, NaO2
After adding metal oxides such as and kneading to make clay, granulating and shaping it into an appropriate size and shape and pre-drying at a temperature of around 100°F, the clay was prepared in the same manner as in the above-mentioned example. sintering,
Oxidation catalytic action is added by performing acid tin treatment.

以下に本発明の低分子ガス吸着、酸化触媒材(以下、単
に本発明品と称す)の組成及び特性について説明する。
The composition and characteristics of the low molecular gas adsorption and oxidation catalyst material of the present invention (hereinafter simply referred to as the product of the present invention) will be explained below.

(イ) 化学組成(%) SiO2,、、87,335TiO2,、、0,21A
I203. 、 、5.19   Fe20s、 、 
 1.64Cab、 、 、 、 0.27   Mg
O,、、0,555NaO2,、、0,255K2O,
、、0,745その他、微量成分として Ge、 、 、 0.IPPM、 Cr、 、 、 3
0PFMPb、 、 、 50PPM  を含有してい
る。
(a) Chemical composition (%) SiO2,...87,335TiO2,...0,21A
I203. , ,5.19 Fe20s, ,
1.64Cab, , , , 0.27 Mg
O,,,0,555NaO2,,0,255K2O,
, , 0,745Other trace components include Ge, , , 0. IPPM, Cr, , , 3
Contains 0PFMPb, , , 50PPM.

(ロ) 一般的性質 見掛比重、 、 、 2.26   かさ比重、 、 
、 1.17見掛気孔率、 、 48.305% 吸水率、 、 、 、 41.495 粒子強度、 、 、 1.16% 苛性ソーダに可溶な5iOz、、、91.8%−is酸
+::可溶な5iOz、、、0.11%(ハ)本発明品
と他の吸着材との物性及び化学的特性の比較 jt較例(1)、、、、(T)社のヤシガラ活性炭比較
例(2)、、、、(T)社の石炭系活性炭比較例(3)
、、、、ゼオライト岩(クリノプチロライト)比較例(
4)、、、、ゼオライト岩(モルデナイト)(ニ) ガ
ス吸着性能                単位:g
/’g以上の特性でみられるように、本発明品は比較的
軽く、多孔質で、吸水性、脱水性に優れ、ガス吸着性能
において、硫化水奏(H2S>については天然ゼオライ
トの約30倍で活性炭とほぼ同等の吸着能力を示し、ア
ンモニアガス(NH3)についでは、活性炭及びゼオラ
イトの約10倍の値を示している。
(b) General properties Apparent specific gravity, , 2.26 Bulk specific gravity, ,
, 1.17 Apparent porosity, , 48.305% Water absorption, , , , 41.495 Particle strength, , 1.16% 5iOz soluble in caustic soda, , 91.8%-is acid +: : Soluble 5iOz...0.11% (c) Comparison of physical and chemical properties of the product of the present invention and other adsorbents jt Comparison Example (1) Comparison of coconut shell activated carbon from Company (T) Example (2), Coal-based activated carbon comparison example (3) of Company (T)
,,, Zeolite rock (clinoptilolite) comparative example (
4) Zeolite rock (mordenite) (d) Gas adsorption performance Unit: g
/'g or more, the product of the present invention is relatively light, porous, and has excellent water absorption and dehydration properties, and its gas adsorption performance is about 30% higher than that of natural zeolite in terms of water sulfide (H2S). It shows almost the same adsorption capacity as activated carbon, and for ammonia gas (NH3), it shows about 10 times the adsorption capacity of activated carbon and zeolite.

更に、本発明品の水によるエチレンリリーズ特性を第1
図のグラフに示めす。
Furthermore, the water-induced ethylene release properties of the product of the present invention were
This is shown in the graph in Figure.

これは、エチレンガスの吸着量を水によるリリーズ濃度
により測定したもので、実験条件は次の通りである。
This is a measurement of the adsorption amount of ethylene gas based on the concentration released by water, and the experimental conditions are as follows.

本発明品をカラムに詰め、約500PPMのエチレンガ
スを24時間流して数分間空気中に放置したものを試料
として使用する。
The product of the present invention is packed in a column, ethylene gas of about 500 PPM is passed through it for 24 hours, and the column is left in the air for several minutes to be used as a sample.

前記試料の3.1gを三角フラスコにとり、これに水1
hlを加えてゴム栓で密封し、温度30℃の暗所に24
時間放置した後、ゴム栓を通して注射器でfmlのガス
を採取し、ガスクロマトグラフィーによってエチレン濃
度を測定するのである。測定は、24時間毎に行い、各
測定終了回毎に栓を開はフラスコ内の空気を入れ換え、
24時間後に次の測定を行うのである。
Take 3.1 g of the sample in an Erlenmeyer flask and add 1 g of water to it.
Add hl, seal with a rubber stopper, and store in a dark place at a temperature of 30℃ for 24 hours.
After leaving it for a while, fml of gas is collected with a syringe through a rubber stopper, and the ethylene concentration is measured by gas chromatography. Measurements were performed every 24 hours, and after each measurement, the stopper was opened to replace the air in the flask.
The next measurement is taken 24 hours later.

この結果は、第1図にみられるように、第1日日は3.
33PPMであった水(こよるエチレンリリーズ濃度が
8日目には、はとんど零値を示すようになった。すなわ
ち、エチレン吸着量は、放出された測定値の総和で示さ
れる。この試料によれば、実験を始めて4日間は、はぼ
直線的な吸着性を示し、少な(とも8日間にわったて吸
着性能が維持できることが判明した。− 発明の詳細 な説明したように、本発明は、細多孔質材料を基材とし
て、これに酸素処理を行って低分子ガスの吸着性能と同
時に酸化触媒作用を付与したものであるから、従来の吸
着、脱臭剤にない優れた殺菌効果をも兼ね備えたもので
あり、材料も格別な基材を必要とせず、原則的には広く
一般の細多孔質材料をも、その基材の対象として考えら
れ、廉価な材料で優れた吸着酸化触媒材を得ることが出
来、経済的にも非常に有利なものである。
As shown in Figure 1, this result shows that the first day is 3.
On the 8th day, the ethylene release concentration in the water, which was 33 PPM, almost reached zero. In other words, the amount of ethylene adsorbed is shown as the sum of the measured values released. According to the sample, the adsorption performance was almost linear for the first 4 days of the experiment, and it was found that the adsorption performance could be maintained for 8 days. - As described in detail of the invention, The present invention uses a fine porous material as a base material, which is treated with oxygen to give it adsorption performance for low molecular gases as well as oxidation catalytic action, so it has excellent sterilization properties not found in conventional adsorption and deodorizing agents. It is highly effective and does not require a special base material; in principle, a wide range of general porous materials can be considered as the base material, and it is an inexpensive material with excellent adsorption properties. It is possible to obtain an oxidation catalyst material and is very economically advantageous.

本発明の有利な使用形態としては色々と考えられるが、
その第一は、前述したような、青果物の保存手段として
使用するものである。例えば、本発明品を果物貯蔵庫に
配備すると、果物から生成されるエチレンガスが本発明
品の吸着作用により吸着される。すると、本発明品の酸
化触媒作用により、エチレンガスがエチレンオキサイド
に変化するので、果物の成熟が遅延する。しかも、酸化
触媒作用の結果生成されたエチレンオキサイドは強力な
殺菌作用を有するので、果物の成熟進行の遅延と殺菌作
用の相剰効果により貯蔵庫内の果物の腐敗が防止される
のである。
There are many possible ways in which the present invention can be used advantageously.
The first is the use as a means of preserving fruits and vegetables, as mentioned above. For example, when the product of the present invention is placed in a fruit storage, ethylene gas generated from the fruits is adsorbed by the product of the present invention. Then, due to the oxidation catalytic action of the product of the present invention, ethylene gas is changed to ethylene oxide, thereby delaying the ripening of the fruit. Moreover, since the ethylene oxide produced as a result of the oxidation catalyst has a strong bactericidal effect, the mutual effect of delaying fruit ripening and bactericidal action prevents fruit from rotting in storage.

その他、一般に野菜を箱詰めにして輸送する場合におい
ても、本発明品をペレット状にして箱に入れたり、又は
本発明品の粉末を紙に漉き込んで包装紙として利用した
りすることにより、輸送中の野菜の腐敗を防止し、長距
離輸送、長期保存に効果を発揮するのである。
In addition, even when vegetables are generally packed in boxes and transported, the product of the present invention is made into pellets and placed in the box, or the powder of the product of the present invention is strained into paper and used as wrapping paper. This prevents the vegetables inside from rotting and is effective for long-distance transportation and long-term storage.

また、本発明は、その優れた吸着酸化触媒作用により、
一般の除湿、防臭、脱臭剤としての使用はもとより、強
力な殺菌作用により、前群食料品の腐敗防止や飲料水や
空気の殺菌清浄剤としても抜群の作用効果を有するもの
である。
In addition, the present invention has excellent adsorption oxidation catalytic action,
Not only can it be used as a general dehumidifier, deodorizer, and deodorizer, but due to its strong bactericidal action, it is also highly effective in preventing spoilage of foodstuffs and as a bactericidal cleaner for drinking water and air.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明によるエチレンリリーズ測定結果のグ
ラフである。
FIG. 1 is a graph of ethylene release measurement results according to the present invention.

Claims (1)

【特許請求の範囲】 細多孔質材料を基材として、これに電磁波 又はオゾンを作用させた酸素処理を行った事を特徴とす
る低分子ガス吸着酸化触媒材。
[Scope of Claim] A low-molecular gas adsorption oxidation catalyst material comprising a fine porous material as a base material and subjected to oxygen treatment by applying electromagnetic waves or ozone.
JP59216933A 1984-10-16 1984-10-16 Catalytic material for adsorbing and oxidizing low-molecular gas Pending JPS6193835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59216933A JPS6193835A (en) 1984-10-16 1984-10-16 Catalytic material for adsorbing and oxidizing low-molecular gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59216933A JPS6193835A (en) 1984-10-16 1984-10-16 Catalytic material for adsorbing and oxidizing low-molecular gas

Publications (1)

Publication Number Publication Date
JPS6193835A true JPS6193835A (en) 1986-05-12

Family

ID=16696199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59216933A Pending JPS6193835A (en) 1984-10-16 1984-10-16 Catalytic material for adsorbing and oxidizing low-molecular gas

Country Status (1)

Country Link
JP (1) JPS6193835A (en)

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* Cited by examiner, † Cited by third party
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JPS63164480U (en) * 1987-04-14 1988-10-26
JPS63169492U (en) * 1987-04-24 1988-11-04
JPH01138243A (en) * 1987-11-25 1989-05-31 Arai Bussan Kk Food packaging sheet
JPH01252244A (en) * 1988-03-31 1989-10-06 Hamamatsu Photonics Kk Freshness-keeping method, apparatus therefor and method for controlling growth of plant
EP0361385A2 (en) * 1988-09-26 1990-04-04 Sakai Chemical Industry Co., Ltd., Deodorizing method and deodorizing catalyst
JPH02261341A (en) * 1989-04-01 1990-10-24 Nippon Shokubai Kagaku Kogyo Co Ltd Method for eliminating ethylene in vegetable storing chamber
JPH03206010A (en) * 1989-12-29 1991-09-09 Shokuhin Kankyo Kaihatsu Kk Material for inhibiting microorganism adsorbing ozone and method for inhibiting microorganism
FR2767645A1 (en) * 1997-09-03 1999-03-05 Henri Louis Marie Drean PRESERVATION PRODUCT FOR LIVING MATERIALS PROCESS AND DEVICE FOR OBTAINING SAME
EP1483972A1 (en) * 2003-06-02 2004-12-08 Université Catholique de Louvain Method and apparatus for preserving agricultural products
JP4837828B2 (en) * 1998-09-15 2011-12-14 ナノスケール コーポレーション Reactive nanoparticles as adsorption and removal agents for biological and chemical pollutants
CN104309903A (en) * 2014-09-25 2015-01-28 中山市振鸿包装科技有限公司 Preservative film for short-term storage of fruits and vegetables, preparation method of preservative film and prepared preservative bag
JP2017018862A (en) * 2015-07-07 2017-01-26 国立大学法人 長崎大学 photocatalyst
CN108671920A (en) * 2018-05-30 2018-10-19 淮海工学院 Mesoporous γ-Fe-Ti-Al2O3Catalyst and preparation method thereof and purposes

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Publication number Priority date Publication date Assignee Title
JPS5661957A (en) * 1979-10-22 1981-05-27 Showa Tansan Kk Freshness retaining agent for vegetable and fruit
JPS58196846A (en) * 1982-05-12 1983-11-16 Tokuyama Soda Co Ltd Olefin absorbent

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JPS5661957A (en) * 1979-10-22 1981-05-27 Showa Tansan Kk Freshness retaining agent for vegetable and fruit
JPS58196846A (en) * 1982-05-12 1983-11-16 Tokuyama Soda Co Ltd Olefin absorbent

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JPS63164480U (en) * 1987-04-14 1988-10-26
JPS63169492U (en) * 1987-04-24 1988-11-04
JPH01138243A (en) * 1987-11-25 1989-05-31 Arai Bussan Kk Food packaging sheet
JPH01252244A (en) * 1988-03-31 1989-10-06 Hamamatsu Photonics Kk Freshness-keeping method, apparatus therefor and method for controlling growth of plant
JPH0430820B2 (en) * 1988-03-31 1992-05-22
EP0361385A2 (en) * 1988-09-26 1990-04-04 Sakai Chemical Industry Co., Ltd., Deodorizing method and deodorizing catalyst
JPH02261341A (en) * 1989-04-01 1990-10-24 Nippon Shokubai Kagaku Kogyo Co Ltd Method for eliminating ethylene in vegetable storing chamber
JPH03206010A (en) * 1989-12-29 1991-09-09 Shokuhin Kankyo Kaihatsu Kk Material for inhibiting microorganism adsorbing ozone and method for inhibiting microorganism
FR2767645A1 (en) * 1997-09-03 1999-03-05 Henri Louis Marie Drean PRESERVATION PRODUCT FOR LIVING MATERIALS PROCESS AND DEVICE FOR OBTAINING SAME
WO1999011140A1 (en) * 1997-09-03 1999-03-11 Atmos Concept Product for preserving living matters, method and device for obtaining same
JP4837828B2 (en) * 1998-09-15 2011-12-14 ナノスケール コーポレーション Reactive nanoparticles as adsorption and removal agents for biological and chemical pollutants
EP1483972A1 (en) * 2003-06-02 2004-12-08 Université Catholique de Louvain Method and apparatus for preserving agricultural products
WO2004105497A1 (en) * 2003-06-02 2004-12-09 Certech Asbl Method and device for preserving agricultural products
CN104309903A (en) * 2014-09-25 2015-01-28 中山市振鸿包装科技有限公司 Preservative film for short-term storage of fruits and vegetables, preparation method of preservative film and prepared preservative bag
JP2017018862A (en) * 2015-07-07 2017-01-26 国立大学法人 長崎大学 photocatalyst
CN108671920A (en) * 2018-05-30 2018-10-19 淮海工学院 Mesoporous γ-Fe-Ti-Al2O3Catalyst and preparation method thereof and purposes

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