JP2001187337A - Bisphenol a adsorbent and adsorption removing method - Google Patents
Bisphenol a adsorbent and adsorption removing methodInfo
- Publication number
- JP2001187337A JP2001187337A JP2000005013A JP2000005013A JP2001187337A JP 2001187337 A JP2001187337 A JP 2001187337A JP 2000005013 A JP2000005013 A JP 2000005013A JP 2000005013 A JP2000005013 A JP 2000005013A JP 2001187337 A JP2001187337 A JP 2001187337A
- Authority
- JP
- Japan
- Prior art keywords
- bisphenol
- adsorbent
- zeolite
- solution
- type
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ビスフェノールＡ
を含む液からビスフェノールＡを除去するのに好適な吸
着剤および除去方法に関し、特に溶液中に含まれるビス
フェノールＡが微量であっても吸着除去できる吸着剤、
およびそれを用いたビスフェノールＡの吸着除去する方
法に関する。TECHNICAL FIELD The present invention relates to a bisphenol A
The present invention relates to a suitable adsorbent and a method for removing bisphenol A from a liquid containing, particularly, an adsorbent capable of adsorbing and removing even a trace amount of bisphenol A contained in a solution.
And a method for adsorbing and removing bisphenol A using the same.
【０００２】[0002]
【従来の技術】ビスフェノールＡ（分子式（ＣＨ3）2Ｃ
（Ｃ6Ｈ4ＯＨ）2）はエポキシ樹脂、ポリカーボネー
ト、防カビ剤、抗酸化剤、染料などに用いられている有
用な化学物質である。近年、このビスフェノールＡが内
分泌撹乱化学物質の一つであり、生体内の内分泌系の情
報伝達を撹乱するのみならず、免疫系や神経系の正常な
機能にも影響を与えていることが指摘されており、ビス
フェノールＡを含む溶液等からのビスフェノールＡ、特
に希薄なビスフェノールＡ溶液からのビスフェノールＡ
の除去技術の開発が望まれている。しかしながら、ビス
フェノールＡの除去技術はいまだ確立されておらず、ビ
スフェノールＡを除去する技術が望まれていた。2. Description of the Related Art Bisphenol A (molecular formula (CH 3 ) 2 C)
(C 6 H 4 OH) 2 ) is a useful chemical substance used in epoxy resins, polycarbonates, fungicides, antioxidants, dyes, and the like. In recent years, it has been pointed out that this bisphenol A is one of the endocrine disrupting chemicals, not only disrupting the endocrine system's information transmission in the body, but also affecting the normal functioning of the immune system and nervous system. Bisphenol A from a solution containing bisphenol A, especially bisphenol A from a dilute bisphenol A solution
There is a demand for the development of a technology for removing carbon. However, a technique for removing bisphenol A has not been established yet, and a technique for removing bisphenol A has been desired.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、上記
に記載した従来の課題等を解決する、すなわち、ビスフ
ェノールＡを効率よく吸着できる吸着剤、及びこのこの
吸着剤を用いてビスフェノールＡを含む溶液からビスフ
ェノールＡを効率よく吸着し除去する方法を提供するも
のである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and the like, that is, an adsorbent capable of efficiently adsorbing bisphenol A, and bisphenol A by using this adsorbent. It is intended to provide a method for efficiently adsorbing and removing bisphenol A from a solution containing the same.
【０００４】[0004]
【課題を解決するための手段】本発明者らは上記課題を
解決するために鋭意検討した結果、ゼオライトを吸着剤
として、特に特定のＳｉＯ２／Ａｌ２Ｏ３モル比を有し
たゼオライトを用いることにより、ビスフェノールＡを
含む液からビスフェノールＡを効率よく吸着除去できる
ことを見出し、本発明を完成するに至った。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, the use of zeolite as an adsorbent, particularly zeolite having a specific SiO2 / Al2O3 molar ratio, has led to the use of bisphenol. The inventors have found that bisphenol A can be efficiently adsorbed and removed from a liquid containing A, and have completed the present invention.
【０００５】すなわち本発明は、ゼオライトからなるビ
スフェノールＡ吸着剤及びそれを用いたビスフェノール
Ａの吸着除去方法に関するものである。That is, the present invention relates to a bisphenol A adsorbent comprising zeolite and a method for adsorbing and removing bisphenol A using the same.
【０００６】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【０００７】本発明に用いられる吸着剤はゼオライトか
らなる。[0007] The adsorbent used in the present invention comprises zeolite.
【０００８】ゼオライトとは一般に、Ｍ2/nＯ・Ａｌ2Ｏ
3・ｙＳｉＯ2・ｚＨ2Ｏ（式中、ｎは陽イオンＭの原子
価、ｙは２以上の数、ｚは０以上の数である。）の組成
を有する結晶性アルミノシリケートであり、天然品およ
び合成品として多くの種類が知られている。[0008] Zeolites are generally M 2 / n O.Al 2 O
3 · ySiO 2 · zH (wherein, n valence of cation M, y is a number of 2 or more, z is a number of 0 or more.) 2 O and a crystalline aluminosilicate having a composition of, natural Many types are known as articles and composites.
【０００９】本発明に用いられるゼオライトの種類は特
に限定はされず、例えば、フェリエライト型、Ｙ型、Ｘ
型、エリオナイト、モルデナイト、ＺＳＭ−５、ＺＳＭ
−１１、ＺＳＭ−１２、ＺＳＭ−２３、ベータ型、ＭＣ
Ｍ−２２、ＭＣＭ−４１、ＭＣＭ−４８、ＦＳＭ−１
６、ＳＢＡ−１５等のゼオライトを挙げることができ、
この中には、アルミニウムを含まない結晶性シリケート
も含まれる。これらの内でも吸着効率の面からＹ型ゼオ
ライトが好ましく用いられる。これらのゼオライトは、
天然品および合成品をそのまま用いても、またこれらを
Ｎａ等にてイオン交換したり、あるいは焼成して用いて
も差し支えない。この時の交換可能な陽イオン種は特に
限定されないが、プロトンが好ましい。また複数の種類
の元素を含有していても差し支えない。さらに、ビスフ
ェノールＡを吸着、除去する際に、高い効率を得るため
にはＳｉＯ2／Ａｌ2Ｏ3モル比が１５以上であることが
好ましい。ＳｉＯ2／Ａｌ2Ｏ3モル比を１５以上とする
ことでビスフェノールＡに対する吸着性が高まる理由は
不明であるが、ゼオライトが疎水性となるためと推定さ
れる。しかしながらこのような推定は本発明を何ら拘束
するものではない。The type of zeolite used in the present invention is not particularly limited, and examples thereof include ferrierite type, Y type, and X type.
Mold, erionite, mordenite, ZSM-5, ZSM
-11, ZSM-12, ZSM-23, beta type, MC
M-22, MCM-41, MCM-48, FSM-1
6, zeolite such as SBA-15,
These include crystalline silicates that do not contain aluminum. Among these, Y-type zeolite is preferably used from the viewpoint of adsorption efficiency. These zeolites
Natural products and synthetic products may be used as they are, or they may be ion-exchanged with Na or the like or fired. The exchangeable cation species at this time is not particularly limited, but a proton is preferable. Also, a plurality of kinds of elements may be contained. Further, in order to obtain high efficiency when adsorbing and removing bisphenol A, the SiO 2 / Al 2 O 3 molar ratio is preferably 15 or more. The reason why the adsorbability to bisphenol A is increased by setting the SiO 2 / Al 2 O 3 molar ratio to 15 or more is unknown, but it is presumed that zeolite becomes hydrophobic. However, such estimation does not restrict the present invention at all.
【００１０】本発明のビスフェノールＡ吸着剤は、吸着
剤として用いるのに際して、乾燥や焼成等の前処理を行
なってから用いてもよく、粉末状、ペレット状、ハニカ
ム状等の形状、構造等は問わず、アルミナゾル、シリカ
ゾルや粘土等のバインダーを加えて所定の形状に成型し
たり、水を加えてスラリー状とし、ハニカム等の形状の
アルミナ、マグネシア、コージェライト等の基材上に塗
布してから使用してもよい。When the bisphenol A adsorbent of the present invention is used as an adsorbent, it may be used after pretreatment such as drying and baking, and the shape, structure, etc., such as powder, pellet, honeycomb, etc. Regardless, add a binder such as alumina sol, silica sol or clay to form a predetermined shape, or add water to form a slurry, and apply it on a substrate such as honeycomb, alumina, magnesia, cordierite, etc. May be used.
【００１１】本発明の吸着剤はビスフェノールＡを吸着
除去するに適したものであるが、その吸着除去の条件と
しては、ビスフェノールＡ含有液と吸着剤とを接触させ
ればよいのである。本発明の方法の対象となるビスフェ
ノールＡ含有液としては、溶液であってもスラリー等を
含む懸濁液であってもよい。さらに、ビスフェノールＡ
以外の、例えば溶剤として用いられるエタノールなどの
物質を含んでおいても問題はなく、また、種々の工業製
品を製造する際に廃液などとして処理される液であった
り、一般の廃液や河川、海水等であったり、あるいはビ
スフェノールＡ製造の際に出される工程液、排出液など
であってもよい。The adsorbent of the present invention is suitable for adsorbing and removing bisphenol A. The condition for the adsorption and removal is that the bisphenol A-containing liquid is brought into contact with the adsorbent. The bisphenol A-containing liquid to be subjected to the method of the present invention may be a solution or a suspension containing a slurry or the like. Furthermore, bisphenol A
Other than that, for example, there is no problem even if it contains a substance such as ethanol used as a solvent, and a liquid that is treated as a waste liquid when manufacturing various industrial products, a general waste liquid or a river, It may be seawater or the like, or a process liquid or effluent discharged during the production of bisphenol A.
【００１２】ビスフェノールＡを吸着除去する際のビス
フェノールＡの濃度は特に限定されるものではないが、
ビスフェノールＡの濃度として１ミリモル／リットル以
下であれば本発明の方法が効果的となる。The concentration of bisphenol A when adsorbing and removing bisphenol A is not particularly limited.
If the concentration of bisphenol A is 1 mmol / l or less, the method of the present invention is effective.
【００１３】ビスフェノールＡを吸着除去する際の温
度、吸着剤の使用量、処理時間としては、処理対象のビ
スフェノールＡ含有液中のビスフェノールＡ濃度やその
量により一定しないが、温度は０℃〜１００℃、使用量
は液の重量に対し１／１０００〜１倍であることが好ま
しい。また、吸着除去する際の時間としても、これらの
条件の下で適宜決めればよい。The temperature at which bisphenol A is adsorbed and removed, the amount of adsorbent used, and the treatment time are not fixed depending on the concentration and amount of bisphenol A in the bisphenol A-containing liquid to be treated. It is preferable that the amount used is 1/1000 to 1 times the weight of the liquid. Also, the time for the adsorption removal may be appropriately determined under these conditions.
【００１４】[0014]
【実施例】以下、実施例において本発明をさらに詳細に
説明するが、本発明はこれら実施例のみに限定されるも
のではない。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
【００１５】実施例１ ＳｉＯ2／Ａｌ2Ｏ3モル比５．６のプロトン型のＹ型ゼ
オライト（東ソー株式会社製、商品名「ＨＳＺ−３２０
ＨＯＡ」）をそのまま用い、吸着剤１とした。この吸着
剤１を１００ミリグラム秤量し、０．０５ミリモル／リ
ットルのビスフェノールＡエタノール溶液２０ミリリッ
トルに分散させ、３０３Ｋで１８時間振とうした。ブラ
ンクとして、吸着剤及び比較吸着剤を分散させない溶液
も３０３Ｋで１８時間振とうした。振とう後、上澄みを
採取してして試験液とした。また、吸着剤を用いずに
０．０５ミリモル／リットルのビスフェノールＡエタノ
ール溶液２０ミリリットルに分散させ、３０３Ｋで１８
時間振とうしたものをブランク溶液とし、これらを可視
紫外分光光度計（日本分光工業株式会社製、Ｕｂｅｓｔ
−５５）を用い、これらの溶液の２７５ｎｍにおける吸
光度を測定した。そして、試験液とブランク液との吸光
度の差を、予め求めたビスフェノールＡの検量線からビ
スフェノールＡの量を求め、表１に示すビスフェノール
Ａの吸着量を決定した。Example 1 A proton type Y-type zeolite having an SiO 2 / Al 2 O 3 molar ratio of 5.6 (trade name “HSZ-320” manufactured by Tosoh Corporation)
HOA ”) was used as it was, and used as adsorbent 1. 100 mg of this adsorbent 1 was weighed, dispersed in 20 ml of a 0.05 mmol / liter solution of bisphenol A in ethanol, and shaken at 303K for 18 hours. As a blank, a solution in which the adsorbent and the comparative adsorbent were not dispersed was also shaken at 303 K for 18 hours. After shaking, the supernatant was collected and used as a test solution. Also, without using an adsorbent, it was dispersed in 20 mL of a 0.05 mmol / L bisphenol A ethanol solution,
What was shaken for a time was used as a blank solution, which was used as a visible ultraviolet spectrophotometer (Ubest, manufactured by JASCO Corporation).
Using -55), the absorbance of these solutions at 275 nm was measured. Then, the difference in absorbance between the test solution and the blank solution was determined from the previously determined calibration curve of bisphenol A, and the amount of bisphenol A was determined, and the adsorption amount of bisphenol A shown in Table 1 was determined.
【００１６】[0016]
【表１】 [Table 1]
【００１７】実施例２ ＳｉＯ2／Ａｌ2Ｏ3モル比１０．７のプロトン型のＹ型
ゼオライト（東ソー株式会社製、商品名「ＨＳＺ−３５
０ＨＵＡ」）をそのまま用い、吸着剤２とした。この吸
着剤２を用いたこと以外は実施例１と同様の操作を行
い、求めたビスフェノールＡの吸着量を表１に示した。Example 2 A proton type Y-type zeolite having a SiO 2 / Al 2 O 3 molar ratio of 10.7 (trade name “HSZ-35” manufactured by Tosoh Corporation)
0HUA ") was used as it was, and used as adsorbent 2. The same operation as in Example 1 was performed except that this adsorbent 2 was used, and the obtained adsorption amount of bisphenol A is shown in Table 1.
【００１８】実施例３ ＳｉＯ2／Ａｌ2Ｏ3モル比２９のプロトン型のＹ型ゼオ
ライト（東ソー株式会社製、商品名「ＨＳＺ−３７１Ｈ
ＵＡ」）をそのまま用い、吸着剤３とした。この吸着剤
３を用いたこと以外は実施例１と同様の操作を行い、求
めたビスフェノールＡの吸着量を表１に示した。Example 3 A proton type Y-type zeolite having an SiO 2 / Al 2 O 3 molar ratio of 29 (trade name “HSZ-371H” manufactured by Tosoh Corporation)
UA ") was used as it was, and used as adsorbent 3. The same operation as in Example 1 was performed except that this adsorbent 3 was used, and the obtained adsorption amount of bisphenol A is shown in Table 1.
【００１９】実施例４ ＳｉＯ2／Ａｌ2Ｏ3モル比２６０のプロトン型のＹ型ゼ
オライト（東ソー株式会社製、商品名「ＨＳＺ−３９０
ＨＵＡ」）をそのまま用い、吸着剤４とした。この吸着
剤４を用いたこと以外は実施例１と同様の操作を行い、
求めたビスフェノールＡの吸着量を表１に示した。Example 4 A proton type Y-type zeolite having an SiO 2 / Al 2 O 3 molar ratio of 260 (trade name “HSZ-390” manufactured by Tosoh Corporation)
HUA ") was used as it was, and used as adsorbent 4. The same operation as in Example 1 was performed except that this adsorbent 4 was used.
Table 1 shows the determined adsorption amount of bisphenol A.
【００２０】実施例５ ＳｉＯ2／Ａｌ2Ｏ3モル比５．６のプロトン型のＹ型ゼ
オライト（東ソー株式会社製、商品名「ＨＳＺ−３２０
ＨＯＡ」）を、硝酸ナトリウム水溶液でイオン交換し、
Ｎａ交換Ｙ型ゼオライトを得、吸着剤５とした。この吸
着剤５を用いたこと以外は実施例１と同様の操作を行
い、求めたビスフェノールＡの吸着量を表１に示した。Example 5 A proton type Y-type zeolite having an SiO 2 / Al 2 O 3 molar ratio of 5.6 (trade name “HSZ-320” manufactured by Tosoh Corporation)
HOA ") with sodium nitrate aqueous solution,
An Na-exchanged Y-type zeolite was obtained and used as adsorbent 5. The same operation as in Example 1 was performed except that this adsorbent 5 was used, and the obtained adsorption amount of bisphenol A is shown in Table 1.
【００２１】実施例６ ＳｉＯ2／Ａｌ2Ｏ3モル比１０．７のプロトン型のＹ型
ゼオライト（東ソー株式会社製、商品名「ＨＳＺ−３５
０ＨＵＡ」）を、硝酸ナトリウム水溶液でイオン交換
し、Ｎａ交換Ｙ型ゼオライトを得、吸着剤６とした。こ
の吸着剤６を用いたこと以外は実施例１と同様の操作を
行い、求めたビスフェノールＡの吸着量を表１に示し
た。Example 6 A proton type Y zeolite having a molar ratio of SiO 2 / Al 2 O 3 of 10.7 (trade name “HSZ-35” manufactured by Tosoh Corporation)
0HUA ”) was ion-exchanged with an aqueous sodium nitrate solution to obtain a Na-exchanged Y-type zeolite, which was used as adsorbent 6. The same operation as in Example 1 was performed except that this adsorbent 6 was used, and the obtained adsorption amount of bisphenol A is shown in Table 1.
【００２２】実施例７ ＳｉＯ2／Ａｌ2Ｏ3モル比２９のプロトン型のＹ型ゼオ
ライト（東ソー株式会社製、商品名「ＨＳＺ−３７１Ｈ
ＵＡ」）を、硝酸ナトリウム水溶液でイオン交換し、Ｎ
ａ交換Ｙ型ゼオライトを得、吸着剤７とした。この吸着
剤７を用いたこと以外は実施例１と同様の操作を行い、
求めたビスフェノールＡの吸着量を表１に示した。Example 7 A proton type Y-type zeolite having an SiO 2 / Al 2 O 3 molar ratio of 29 (trade name “HSZ-371H” manufactured by Tosoh Corporation)
UA ") is ion-exchanged with an aqueous sodium nitrate solution,
An a-exchanged Y-type zeolite was obtained and used as adsorbent 7. The same operation as in Example 1 was performed except that this adsorbent 7 was used.
Table 1 shows the determined adsorption amount of bisphenol A.
【００２３】実施例８ ＳｉＯ2／Ａｌ2Ｏ3モル比２６０のプロトン型のＹ型ゼ
オライト（東ソー株式会社製、商品名「ＨＳＺ−３９０
ＨＵＡ」）を、硝酸ナトリウム水溶液でイオン交換し、
Ｎａ交換Ｙ型ゼオライトを得、吸着剤８とした。この吸
着剤８を用いたこと以外は実施例１と同様の操作を行
い、求めたビスフェノールＡの吸着量を表１に示した。Example 8 A proton type Y zeolite having a molar ratio of SiO 2 / Al 2 O 3 of 260 (trade name “HSZ-390” manufactured by Tosoh Corporation)
HUA ") is ion-exchanged with an aqueous solution of sodium nitrate,
An Na-exchanged Y-type zeolite was obtained and used as adsorbent 8. The same operation as in Example 1 was performed except that this adsorbent 8 was used, and the obtained adsorption amount of bisphenol A is shown in Table 1.
【００２４】実施例から、ビスフェノールＡは吸着剤と
して使用したＹ型ゼオライトによく吸着していることが
分かる。殊に、Ｙ型ゼオライトのＳｉＯ2／Ａｌ2Ｏ3モ
ル比が高くなるほど、また、プロトン型とすることでそ
の吸着量も増加することが分かる。The examples show that bisphenol A is well adsorbed on the Y-type zeolite used as the adsorbent. In particular, it can be seen that the higher the molar ratio of SiO 2 / Al 2 O 3 of the Y-type zeolite is, the more the zeolite becomes proton-type, so that the adsorption amount increases.
【００２５】[0025]
【発明の効果】本発明のビスフェノールＡ吸着剤はビス
フェノールＡを効率よく吸着することができ、また、本
発明のビスフェノールＡの吸着除去方法によればビスフ
ェノールＡを効率よく吸着除去できる。従って本発明
は、環境保全上極めて有意義である。The bisphenol A adsorbent of the present invention can adsorb bisphenol A efficiently, and the bisphenol A adsorption and removal method of the present invention can efficiently adsorb and remove bisphenol A. Therefore, the present invention is extremely significant in environmental conservation.
Claims (6)
フェノールＡ吸着剤。1. A bisphenol A adsorbent comprising zeolite.
１５以上であることを特徴とする請求項１に記載のビス
フェノールＡ吸着剤。2. The bisphenol A adsorbent according to claim 1, wherein the SiO 2 / Al 2 O 3 molar ratio of the zeolite is 15 or more.
オンがプロトンとなっていることを特徴とする請求項１
又は請求項２に記載のビスフェノールＡ吸着剤。3. The ion exchangeable cation in the zeolite structure is a proton.
Or the bisphenol A adsorbent according to claim 2.
特徴とする請求項１〜３のいずれかに記載のビスフェノ
ールＡ吸着剤。4. The bisphenol A adsorbent according to claim 1, wherein the zeolite is a Y-type zeolite.
ノールＡ吸着剤をビスフェノールＡ含有液に接触させる
ことを特徴とするビスフェノールＡ吸着除去方法。5. A method for adsorbing and removing bisphenol A, comprising contacting the bisphenol A adsorbent according to claim 1 with a bisphenol A-containing liquid.
ルＡの濃度が１ミリモル／リットル以下であることを特
徴とする請求項５に記載のビスフェノールＡ吸着除去方
法。6. The method for removing and adsorbing bisphenol A according to claim 5, wherein the concentration of bisphenol A in the bisphenol A-containing liquid is 1 mmol / liter or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000005013A JP2001187337A (en) | 2000-01-04 | 2000-01-04 | Bisphenol a adsorbent and adsorption removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000005013A JP2001187337A (en) | 2000-01-04 | 2000-01-04 | Bisphenol a adsorbent and adsorption removing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001187337A true JP2001187337A (en) | 2001-07-10 |
Family
ID=18533715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000005013A Pending JP2001187337A (en) | 2000-01-04 | 2000-01-04 | Bisphenol a adsorbent and adsorption removing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001187337A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004004657A (en) * | 2002-03-25 | 2004-01-08 | Sanyo Chem Ind Ltd | Electrophotographic toner binder and electrophotographic toner |
| US7291435B2 (en) | 2002-03-25 | 2007-11-06 | Sanyo Chemical Industries, Ltd. | Toner binder for electrophotography and toner for electrophotography |
| JP2013091057A (en) * | 2011-10-03 | 2013-05-16 | Tosoh Corp | Palladium compound adsorbent and application thereof |
-
2000
- 2000-01-04 JP JP2000005013A patent/JP2001187337A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004004657A (en) * | 2002-03-25 | 2004-01-08 | Sanyo Chem Ind Ltd | Electrophotographic toner binder and electrophotographic toner |
| US7291435B2 (en) | 2002-03-25 | 2007-11-06 | Sanyo Chemical Industries, Ltd. | Toner binder for electrophotography and toner for electrophotography |
| JP2013091057A (en) * | 2011-10-03 | 2013-05-16 | Tosoh Corp | Palladium compound adsorbent and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Visa et al. | Simultaneous adsorption of dyes and heavy metals from multicomponent solutions using fly ash | |
| Wichterlova et al. | Identification of Cu sites in ZSM-5 active in NO decomposition | |
| KR102523358B1 (en) | Synthesis of zeolite with the cha crystal structure, synthesis process and use thereof for catalytic applications | |
| Martín et al. | Fe‐Containing Zeolites for NH3‐SCR of NOx: Effect of Structure, Synthesis Procedure, and Chemical Composition on Catalytic Performance and Stability | |
| RU2005116227A (en) | Catalyst containing y-zeolite with ions of rare-earth elements for cracking hydrocarbons and a method for producing it | |
| JPH04342415A (en) | Method of dealuminizing large-pore diameter zeolite, catalyst and organophilic selective adsorbent containing dealuminized zeolite obtained by said method and silica- based zeolite beta | |
| EP0171981A2 (en) | Selective dealumination of zeolites | |
| BRPI0418757A (en) | microporous crystalline zeolite, and hydrocarbon conversion process | |
| DE69202649T2 (en) | Catalytic composition consisting of a modified Y-zeolite type. | |
| JP2010047469A5 (en) | ||
| DE2626065C3 (en) | Process for the production of a clinoptilolite and its use | |
| US4252688A (en) | Manufacture of bifunctional catalysts for the conversion of hydrocarbons | |
| CN101982232A (en) | Deaminizing agent and preparation method thereof | |
| JPH10259018A (en) | Synthesis of high-silica silicate molecular sieve | |
| JP2001187337A (en) | Bisphenol a adsorbent and adsorption removing method | |
| JPS61230742A (en) | Novel isomerization catalyst of distillate rich in normal paraffins and its production | |
| EP2219997B1 (en) | Crystallised solid im-17 and method for preparing same | |
| DE69409085T2 (en) | Process for the production of zeolites | |
| CA2020580A1 (en) | Synthetic, crystalline aluminosilicate, method for its preparation as well as its use | |
| JPS59213615A (en) | Membranous synthetic zeolite and its manufacture | |
| FR2936790A1 (en) | PROCESS FOR THE PREPARATION OF A MTW STRUCTURAL TYPE ZEOLITE | |
| SA520411182B1 (en) | Zeolite After Treatment Method | |
| Esmaeili et al. | Increasing the adsorption capabilitiy of mordenite and Y zeolites via post‐synthesis chemical/physical treatments in order to remove cationic dyes from polluted water | |
| EP0295020A1 (en) | Activation of zeolites | |
| CA1288086C (en) | Dealumination of zeolites |