JPS6274452A - Photolytic catalyst of water - Google Patents
Photolytic catalyst of waterInfo
- Publication number
- JPS6274452A JPS6274452A JP60213829A JP21382985A JPS6274452A JP S6274452 A JPS6274452 A JP S6274452A JP 60213829 A JP60213829 A JP 60213829A JP 21382985 A JP21382985 A JP 21382985A JP S6274452 A JPS6274452 A JP S6274452A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hydrate
- compound represented
- group
- water photolysis
- 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
- 239000003054 catalyst Substances 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 19
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 4
- 150000001340 alkali metals Chemical class 0.000 claims abstract 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract 3
- 238000006303 photolysis reaction Methods 0.000 claims description 13
- 230000015843 photosynthesis, light reaction Effects 0.000 claims description 12
- 238000005342 ion exchange Methods 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052723 transition metal Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 2
- 229910052708 sodium Inorganic materials 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 11
- 229910000510 noble metal Inorganic materials 0.000 abstract description 4
- 150000002431 hydrogen Chemical class 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 150000002500 ions Chemical group 0.000 description 16
- 239000002245 particle Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 2
- 239000002638 heterogeneous catalyst Substances 0.000 description 2
- 150000004677 hydrates Chemical class 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- -1 excrement Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は、水を光分解して水素を製造する際に使用する
新規な不均一系触媒に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a novel heterogeneous catalyst used in producing hydrogen by photolyzing water.
（発明の背景）
石油危機以降、石油や石炭などの化石エネルギーの枯渇
が真剣に討議され、化石エネルギーの代替エネルギー源
として、また空気をｌηさないクリーンな工ふルギー源
として、水素の使用が堤塞されている。(Background of the invention) After the oil crisis, the depletion of fossil energy such as oil and coal has been seriously discussed, and the use of hydrogen has been discussed as an alternative energy source to fossil energy and as a clean industrial energy source that does not consume air. It is embanked.
そして、水素の製造方法として、水を太陽光で分解（光
分解）して製造する方法が有力視されている。この方法
は、極端に言えば水に大陽光を照射するだけのもので、
ほかに電気、熱などのエネルギーを必要としない。分解
の化学式％式％
ただし、酸化され易いもの例えばアルコールその他の有
機物が共存しているときは、酸素は生成しない。As a method for producing hydrogen, a method of producing hydrogen by decomposing water using sunlight (photolysis) is considered to be a promising method. To put it in an extreme way, this method is simply irradiating the water with sunlight.
It does not require any other energy such as electricity or heat. Chemical formula for decomposition % Formula % However, if easily oxidized substances such as alcohol or other organic substances are present, oxygen will not be produced.
しかし、水の光分解には適当な触媒（光触媒）が必要で
あり、これまで例えば ＴｉＯ□や５ｒＴｉＯｖ粒子が
提案されている。However, photodecomposition of water requires a suitable catalyst (photocatalyst), and so far, for example, TiO□ and 5rTiOv particles have been proposed.
しかしながら、ＴｉＯ□粒子は、還元力、酸化ツノとも
に強いが、活性点を作るためにｐｔやＲｕ０ｚ等の貴金
属を但持させなければ水素、酸素の生成はほとんど認め
られない。従って、ＰｔＪ？）ＲｕＯ，等の貴金属を１
り持させるために触媒の製造プロセスが２段階になるこ
とと貴金属という高価な原料を使用することから製造コ
ストが高いという欠点を有していた。また、５ｒＴｉ（
ｈ粒子も ＮｉＯやＲｈを但持させなければ、水素、酸
素を生成させることができず、製造コストが高い、水素
生成活性も余り高くない、という欠点を有していた。However, TiO□ particles have strong reducing power and oxidation horns, but unless noble metals such as pt and Ru0z are supported to create active sites, hydrogen and oxygen generation is hardly observed. Therefore, PtJ? )RuO, etc. 1
However, the production cost is high because the catalyst production process requires two steps to maintain the temperature of the catalyst, and expensive raw materials such as precious metals are used. In addition, 5rTi (
h-particles also have the disadvantages that hydrogen and oxygen cannot be produced unless NiO or Rh is present, the production cost is high, and the hydrogen production activity is not very high.
（発明の目的）
本発明の目的は、貴金属その他の（１持戒分を１１持さ
せるプロセスが必要でなく、かつ貴金属を使用しないの
で製造コストが安価で、そして活性の高い「水を光分解
して水素を生成するための不均一系触媒」を提供するこ
とにある。(Objective of the Invention) The object of the present invention is to eliminate the need for a process of converting precious metals or other (1-1 to 11-modified compounds), to reduce manufacturing costs because no precious metals are used, and to photolyze highly active "water". The object of the present invention is to provide a "heterogeneous catalyst for producing hydrogen through hydrogen production."
（発明の概要）
本発明者らは、鋭意研究の結果、下記一般式Ｉ及び■で
表される化合物又はその水和物が目的とする触媒として
極めて有用であることを見い出し、本発明を成すに至っ
た。(Summary of the Invention) As a result of intensive research, the present inventors have discovered that the compounds represented by the following general formulas I and 3 or their hydrates are extremely useful as the desired catalyst, and have accomplished the present invention. reached.
従って、本発明は、第一に、
［一般式■：
Ｒ−Ｋｎ−−１ｌＮｂｓＯ＋ｔ
（式中、Ｒは式： Ｋ ＝ Ｎｂ５Ｏ＋ｑで表される化
合物又はその水和物のＫとイオ
ン交換可能な元素であり、
ａはＲの価数であり、
Ｘは不等式： Ｑ＜ａ ｘ≦４を満足する数値である。Therefore, the present invention first provides the following features: [General formula (■): R-Kn--11NbsO+t (wherein, R is an element capable of ion exchange with K of the compound represented by the formula: K=Nb5O+q or its hydrate) , a is the valence of R, and X is a numerical value that satisfies the inequality: Q<a x≦4.
）
で表される化合物又はその水和物からなることを特徴と
する水の光分解触媒」を提供する。) or a hydrate thereof.
また、本発明は、第二に、
［一般式■：
Ｑｙ Ｋ＋−ｂｙＮｂ＊ｏｎ
（式中、Ｑは式：ＫＮｂ−、ＯＩｌで表される化合物の
Ｋとイオン交換可能な元素
であり、
ｂばＱの価数であり、
Ｙは不等式：０くｂＹ≦１を満足す
る数イ直である。）
で表される化合物からなることを特徴とする水の光分解
触媒」を提供する。The present invention also provides, secondly, [General formula (■): Qy K+-byNb*on (wherein, Q is an element capable of ion exchange with K of the compound represented by the formula: KNb-, OIl, b is the valence of Q, and Y is a straight number that satisfies the inequality: 0 bY≦1.
前記一般式■及びＨの化合物並びにその水和物、それ自
体は、一部分耕の物質であり、特に層状構造を有するも
のが本発明の目的にとって好ましく、このような層状構
造を有するものは、主にイオン交換体である。このイオ
ン交換体は、例えば「ニオブ八面体のプレートが層をな
し、その層間ににイオン及び場合により水和水が存在し
ている、式： Ｋ４ＮｈｓＯ７を又はＫＮｂｉＯｉで表
される化合物或いはその水和物」のにイオンをＲ又は−
Ｑとイオン交換することによって容易に得られる。The compounds of the general formulas (1) and (H) and their hydrates are themselves partially cultivated substances, and those having a layered structure are particularly preferred for the purpose of the present invention, and those having such a layered structure are mainly It is an ion exchanger. This ion exchanger is, for example, a compound represented by the formula: K4NhsO7 or KNbiOi, or a hydrate thereof, in which niobium octahedral plates form layers, and ions and optionally hydration water exist between the layers. R or - for the ion of "object"
It can be easily obtained by ion exchange with Q.
イオン交換それ自体は、公知の技術であり、例えばＲ又
はＱイオンを含む水溶液中に、式：Ｋ ａ Ｎ ｂ ６
０１ ？又はＫＮｂ＊０＊で表される化合物或いはその
水和物の粉末を添加して、しばらく撹拌し、ろ過し、得
られた固形分を必要に応して乾燥させることにより容易
にイオン交換体が得られる。Ion exchange itself is a known technique, for example in an aqueous solution containing R or Q ions of the formula: K a N b 6
01? Or, by adding a powder of the compound represented by KNb*0* or its hydrate, stirring for a while, filtering, and drying the obtained solid content as necessary, the ion exchanger can be easily converted into an ion exchanger. can get.
イオン交換可能なＲ及びＱは、例えば水素、アルカリ金
属元素、アルカリ土類金属元素、第■族典型元素、第■
族典型元素、第■族典型元素及び遷移金属元素からなる
群から選ばれた元素であり、特に好ましくは、Ｈ，Ｌｉ
＋Ｎａ＋Ｍｇ、Ｃａ、Ｓｒ。Ion-exchangeable R and Q are, for example, hydrogen, alkali metal elements, alkaline earth metal elements, group Ⅰ typical elements, group ①
An element selected from the group consisting of Group typical elements, Group Ⅰ typical elements, and transition metal elements, particularly preferably H, Li
+Na+Mg, Ca, Sr.
Ｂａ、ＡＩ、Ｇａ、Ｓｎ、Ｂｉ、Ｃｒ、Ｍｎ、Ｆｅ、Ｃ
ｏ、Ｎｉ、Ｃｕ。Ba, AI, Ga, Sn, Bi, Cr, Mn, Fe, C
o, Ni, Cu.
Ｚｎ及びＣｅである。They are Zn and Ce.
前記一般式Ｉ及び■で表される化合物又はその水和物の
形状は、光を有効に利用するために表面積の大きい粒子
であるべきであり、その粒径は出来るだけ小さいほうが
好ましいが、現在の技術では、０．１μ以下にすること
は難しい。従って、一般には０４１〜ｌＯμ好ましくは
０．１−１μが適当である。The shape of the compound represented by the above general formulas I and (2) or its hydrate should be in the form of particles with a large surface area in order to utilize light effectively, and it is preferable that the particle size is as small as possible. With the above technology, it is difficult to reduce the thickness to 0.1μ or less. Therefore, in general, 041 to lOμ, preferably 0.1 to 1μ is appropriate.
粒子に粉砕するには、慣用的な粉砕手段例えばボールミ
ルを用いれば容易である。Grinding into particles can be easily done using a conventional grinding means such as a ball mill.
また、製造コストの上昇が差支えなければ、本発明の触
媒粒子に前述のｐｔやＲｈ等の貴金属などを（す、持さ
せてもよい。その場合には、光触媒活性が一層高まるも
のもある。Further, if an increase in production cost is not a problem, the catalyst particles of the present invention may contain noble metals such as the above-mentioned PT and Rh. In that case, the photocatalytic activity may be further enhanced.
本発明の触媒は、水を光分解するために使用されるが、
その場合の水は、水の他に糞尿、有機廃棄物、有機汚泥
等の有機物あるいは無機物が含まれていてもよい。The catalyst of the present invention is used for photolyzing water,
In this case, the water may contain organic or inorganic substances such as excrement, organic waste, and organic sludge in addition to water.
以下、実施例により本発明を具体的に説明するが、本発
明はこれに限定されるものではない。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited thereto.
（実施例１〜２）
Ｋａ ＮｂａＯ＋ｔ’ ３ ｔｒｉ Ｏ粉末（粒径１（
ｌｕ以下）を２ｇ取り、これを５０ｍＪの０．５ Ｎ硫
酸に加えて室温にて撹拌し、イオン交換反応を行なった
。(Examples 1-2) Ka NbaO+t' 3 tri O powder (particle size 1 (
lu or less) was added to 50 mJ of 0.5 N sulfuric acid and stirred at room temperature to perform an ion exchange reaction.
イオン交換された生成物をろ過し乾燥さ−けることによ
り本実施例の触媒を調製した。このとき、ろ液中のに゛
イオンを原子吸光分析法により定量し、これにより生成
物つまりイオン交換体；ＨＸ Ｋｎ−ａｘＮｂａｏ＋
７ （ａ ＝ １）のＸの値を決定した。The catalyst of this example was prepared by filtering and drying the ion exchanged product. At this time, the ions in the filtrate are quantified by atomic absorption spectrometry, and the product, that is, the ion exchanger; HX Kn-axNbao+
7 (a = 1) was determined.
（実施例３）
Ｋａ ＮｂｂＯ＋、・３Ｈ！０粉末（粒径１０μ以下）
を２ｇ取り、これを３Ｑｍｊ！の０．５Ｍ硝酸第二鉄：
Ｆｅ（Ｎｏ、）ｉ水溶液に加えて室温にて撹拌し、イ
オン交換反応を行なった。(Example 3) Ka NbbO+, 3H! 0 powder (particle size 10μ or less)
Take 2g and add 3Qmj! 0.5M ferric nitrate:
It was added to an aqueous Fe(No,)i solution and stirred at room temperature to perform an ion exchange reaction.
イオン交換された生成物をろ過し乾燥させることにより
本実施例の触媒を調製した。このとき、ろ液中のに゛イ
オンを原子吸光分析法により定量し、これにより生成物
つまりイオン交換体。The catalyst of this example was prepared by filtering and drying the ion exchanged product. At this time, the ions in the filtrate are determined by atomic absorption spectrometry, and the product, ie, the ion exchanger, is determined.
Ｆｅ ｗ Ｋａ−ｍｗＮｂｂｏ＋ｑ （ａ ＝ ３
）のＸの値を決定した。Fe w Ka−mwNbbo+q (a = 3
) was determined.
そのほか同様にして下記第１表記載の触媒を調製した。Other catalysts listed in Table 1 below were prepared in the same manner.
（触媒の評価）
３００ｍｌ のフラスコにメタノール５０ｍ１と水２０
０ｍ１と触媒０．２ ｇを仕込み、マグネチノクスクー
ラーで１１ Ｐｔ’しながら、５００Ｗのキセノン・ラ
ンプで光を照射した。(Catalyst evaluation) 50 ml of methanol and 20 ml of water in a 300 ml flask.
0 ml and 0.2 g of catalyst were charged, and irradiated with light using a 500 W xenon lamp while adding 11 Pt' using a magnetinox cooler.
照射後、１時間毎に水素の生成油をガスクロマトグラフ
ィーで測定し、定常活性を求めた。この結果を下記第１
表に示す。After irradiation, hydrogen produced oil was measured every hour by gas chromatography to determine steady-state activity. This result is shown in the first section below.
Shown in the table.
なお１、〕こては、水にメタノールを添加しているが、
これは触媒の活性を評価し易いからである。Note 1: The trowel adds methanol to the water,
This is because it is easy to evaluate the activity of the catalyst.
第 １ 表
（メーｒ：比較例の触媒も何も担持してない）（実施例
８）
ＫＮｂ、Ｏ１ｌ粉末（粒径ｌＯμ以下）を２ｇ取り、こ
れを５０ｍｊ！の０．５Ｎ硫酸に加えて室温にて撹拌し
、イオン交換反応を行なった。Table 1 (Mer: No catalyst was supported in the comparative example) (Example 8) 2g of KNb, O1l powder (particle size 1Oμ or less) was taken and mixed with 50mj! The mixture was added to 0.5N sulfuric acid and stirred at room temperature to perform an ion exchange reaction.
イオン交換された生成物をろ過し乾燥させることにより
本実施例の触媒を調製した。このとき、ろ液中のに゛イ
オンを原子吸光分析法により定量し、これにより生成物
つまりイオン交換体：Ｈｖ Ｋ ＋−ｂｙＮｂｓｏｓ
（ｂ ＝ １ ）のＹの値を決定した。The catalyst of this example was prepared by filtering and drying the ion exchanged product. At this time, the ions in the filtrate are quantified by atomic absorption spectrometry, and the product, that is, the ion exchanger: Hv K + -byNbsos
The value of Y for (b = 1) was determined.
そのほか、下記第２表記載の触媒を調製した。In addition, catalysts listed in Table 2 below were prepared.
そして、得られた触媒を前述の如く評価した。The resulting catalyst was then evaluated as described above.
この結果を第２表に示す。The results are shown in Table 2.
第２表
（発明の効果）
以上のとおり、本発明によれば、ｐｔやＲｕ Ｏ２等の
貴金属その他を担持させることなく、活性の高い触媒が
得られ、そのため触媒の製造コストが安価で済み、従っ
て水から安価に水素を製造することが可能になる。Table 2 (Effects of the Invention) As described above, according to the present invention, a highly active catalyst can be obtained without supporting noble metals such as PT and RuO2, and therefore the production cost of the catalyst is low. Therefore, it becomes possible to produce hydrogen from water at low cost.
Claims (1)
Ｒは式：Ｋ＿４Ｎｂ＿６Ｏ＿１＿７で表される化合物又
はその水和物のＫとイオン交換可能な元素であり、 ａはＲの価数であり、 ｘは不等式：０＜ａｘ≦４を満足する数値である。） で表される化合物又はその水和物からなることを特徴と
する水の光分解触媒。 ２ 一般式II： Ｑ＿ＹＫ＿１＿−＿ｂ＿ＹＮｂ＿３Ｏ＿■ （式中、Ｑは式：ＫＮｂ＿３Ｏ＿８で表される化合物の
Ｋとイオン交換可能な元素であり、 ｂはＱの価数であり、 Ｙは不等式：０＜ｂＹ≦１を満足する数値である。） で表される化合物からなることを特徴とする水の光分解
触媒。 ３ 前記一般式 I の化合物又はその水和物が層状構造
を有することを特徴とする特許請求の範囲第１項記載の
水の光分解触媒。 ４ 前記一般式IIの化合物が層状構造を有することを特
徴とする特許請求の範囲第２項記載の水の光分解触媒。 ５ 前記一般式 I の化合物又はその水和物が、Ｋ＿４
Ｎｂ＿６Ｏ＿１＿７で表される化合物又はその水和物の
イオン交換体であることを特徴とする特許請求の範囲第
１項記載の水の光分解触媒。 ６ 前記一般式IIの化合物が、ＫＮｂ＿３Ｏ＿８で表さ
れる化合物のイオン交換体であることを特徴とする特許
請求の範囲第２項記載の水の光分解触媒。 ７ 前記Ｒが、水素、アルカリ金属元素、アルカリ土類
金属元素、第III族典型元素、第IV族典型元素、第Ｖ族
典型元素及び遷移金属元素からなる群から選ばれた１種
又は２種以上の元素であることを特徴とする特許請求の
範囲第１項記載の水の光分解触媒。 ８ 前記Ｑが、水素、アルカリ金属元素、アルカリ土類
金属元素、第III族典型元素、第IV族典型元素、第Ｖ族
典型元素及び遷移金属元素からなる群から選ばれた１種
又は２種以上の元素であることを特徴とする特許請求の
範囲第２項記載の水の光分解触媒。 ９ 前記Ｒが、Ｈ、Ｌｉ、Ｎａ、Ｍｇ、Ｃａ、Ｓｒ、Ｂ
ａ、Ａｌ、Ｇａ、Ｓｎ、Ｂｉ、Ｃｒ、Ｍｎ、Ｆｅ、Ｃｏ
、Ｎｉ、Ｃｕ、Ｚｎ及びＣｅからなる群から選ばれた１
種又は２種以上の元素であることを特徴とする特許請求
の範囲第１項記載の水の光分解触媒。 １０ 前記Ｑが、Ｈ、Ｌｉ、Ｎａ、Ｍｇ、Ｃａ、Ｓｒ、
Ｂａ、Ａｌ、Ｇａ、Ｓｎ、Ｂｉ、Ｃｒ、Ｍｎ、Ｆｅ、Ｃ
ｏ、Ｎｉ、Ｃｕ、Ｚｎ及びＣｅからなる群から選ばれた
１種又は２種以上の元素であることを特徴とする特許請
求の範囲第２項記載の水の光分解触媒。[Claims] 1 General formula I: R_xK_4_−_a_xNb_6O_1_7 (in the formula,
R is an element capable of ion exchange with K of the compound represented by the formula: K_4Nb_6O_1_7 or its hydrate, a is the valence of R, and x is a numerical value that satisfies the inequality: 0<ax≦4 . ) or a hydrate thereof. 2 General formula II: Q_YK_1_-_b_YNb_3O_■ (wherein, Q is an element capable of ion exchange with K of the compound represented by the formula: KNb_3O_8, b is the valence of Q, and Y is the inequality: 0<bY ≦1.) A water photolysis catalyst characterized by comprising a compound represented by: 3. The water photolysis catalyst according to claim 1, wherein the compound of general formula I or its hydrate has a layered structure. 4. The water photolysis catalyst according to claim 2, wherein the compound of general formula II has a layered structure. 5 The compound of general formula I or its hydrate is K_4
The water photolysis catalyst according to claim 1, which is an ion exchanger of a compound represented by Nb_6O_1_7 or a hydrate thereof. 6. The water photolysis catalyst according to claim 2, wherein the compound of general formula II is an ion exchanger of a compound represented by KNb_3O_8. 7 The R is one or two selected from the group consisting of hydrogen, an alkali metal element, an alkaline earth metal element, a Group III typical element, a Group IV typical element, a Group V typical element, and a transition metal element. The water photolysis catalyst according to claim 1, which is one of the above elements. 8 The above Q is one or two selected from the group consisting of hydrogen, an alkali metal element, an alkaline earth metal element, a Group III typical element, a Group IV typical element, a Group V typical element, and a transition metal element. The water photolysis catalyst according to claim 2, which is one of the above elements. 9 R is H, Li, Na, Mg, Ca, Sr, B
a, Al, Ga, Sn, Bi, Cr, Mn, Fe, Co
, 1 selected from the group consisting of Ni, Cu, Zn and Ce
The water photolysis catalyst according to claim 1, characterized in that the water photolysis catalyst is a species or two or more kinds of elements. 10 The Q is H, Li, Na, Mg, Ca, Sr,
Ba, Al, Ga, Sn, Bi, Cr, Mn, Fe, C
3. The water photolysis catalyst according to claim 2, wherein the water photolysis catalyst is one or more elements selected from the group consisting of Zn, Ni, Cu, Zn, and Ce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60213829A JPS6274452A (en) | 1985-09-27 | 1985-09-27 | Photolytic catalyst of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60213829A JPS6274452A (en) | 1985-09-27 | 1985-09-27 | Photolytic catalyst of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6274452A true JPS6274452A (en) | 1987-04-06 |
Family
ID=16645715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60213829A Pending JPS6274452A (en) | 1985-09-27 | 1985-09-27 | Photolytic catalyst of water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6274452A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02172535A (en) * | 1988-12-26 | 1990-07-04 | Nikon Corp | New photolysis catalyst for water |
| WO1996006675A1 (en) * | 1994-08-30 | 1996-03-07 | Korea Research Institute Of Chemical Technology | Photocatalyst, method for preparing the same, and production of hydrogen using the same |
| EP1752218A2 (en) | 1998-11-20 | 2007-02-14 | Asahi Kasei Kabushiki Kaisha | Sol of a modified photocatalyst |
| JP2007222761A (en) * | 2006-02-22 | 2007-09-06 | National Institute For Materials Science | Visible light responsive-type composite oxide photocatalyst |
| WO2010104146A1 (en) | 2009-03-11 | 2010-09-16 | 旭化成イーマテリアルズ株式会社 | Coating composition, coating film, laminate, and process for production of laminate |
| EP2816087A1 (en) | 2005-12-13 | 2014-12-24 | Asahi Kasei Chemicals Corporation | Aqueous organic-inorganic hybrid composition |
| CN104487168A (en) * | 2012-05-29 | 2015-04-01 | Toto株式会社 | Visible-light response-type photocatalyst particles and method for manufacturing same |
| JP2016159183A (en) * | 2015-02-26 | 2016-09-05 | 国立研究開発法人産業技術総合研究所 | Visible light responsive composition and photoelectrode, photocatalyst, and photosensor prepared therewith |
| CN107149931A (en) * | 2017-04-17 | 2017-09-12 | 天津理工大学 | The preparation method of Zinc oxide quantum dot potassium niobate photochemical catalyst and the purposes of the catalyst |
| WO2017159564A1 (en) | 2016-03-14 | 2017-09-21 | 旭化成株式会社 | Highly durable antifogging coating film and coating composition |
| WO2019163918A1 (en) | 2018-02-23 | 2019-08-29 | 旭化成株式会社 | High-durability antifogging coating film and coating composition |
-
1985
- 1985-09-27 JP JP60213829A patent/JPS6274452A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02172535A (en) * | 1988-12-26 | 1990-07-04 | Nikon Corp | New photolysis catalyst for water |
| WO1996006675A1 (en) * | 1994-08-30 | 1996-03-07 | Korea Research Institute Of Chemical Technology | Photocatalyst, method for preparing the same, and production of hydrogen using the same |
| US5865960A (en) * | 1994-08-30 | 1999-02-02 | Korea Research Institute Of Chemical Technology | Photocatalyst, method for preparing the same, and production of hydrogen using the same |
| EP1752218A2 (en) | 1998-11-20 | 2007-02-14 | Asahi Kasei Kabushiki Kaisha | Sol of a modified photocatalyst |
| EP1752217A2 (en) | 1998-11-20 | 2007-02-14 | Asahi Kasei Kabushiki Kaisha | Sol of a modified photocatalyst |
| EP2816087A1 (en) | 2005-12-13 | 2014-12-24 | Asahi Kasei Chemicals Corporation | Aqueous organic-inorganic hybrid composition |
| JP2007222761A (en) * | 2006-02-22 | 2007-09-06 | National Institute For Materials Science | Visible light responsive-type composite oxide photocatalyst |
| JP4660766B2 (en) * | 2006-02-22 | 2011-03-30 | 独立行政法人物質・材料研究機構 | Visible light responsive complex oxide photocatalyst |
| US8916266B2 (en) | 2009-03-11 | 2014-12-23 | Asahi Kasei E-Materials Corporation | Coating composition, coating film, laminate, and process for production of laminate |
| WO2010104146A1 (en) | 2009-03-11 | 2010-09-16 | 旭化成イーマテリアルズ株式会社 | Coating composition, coating film, laminate, and process for production of laminate |
| US9630208B2 (en) | 2009-03-11 | 2017-04-25 | Asahi Kasei E-Materials Corporation | Coating composition, coating film, laminate, and process for manufacturing the laminate |
| US9833811B2 (en) | 2009-03-11 | 2017-12-05 | Asahi Kasei E-Materials Corporation | Coating composition, coating film, laminate and process for manufacturing the laminate |
| CN104487168A (en) * | 2012-05-29 | 2015-04-01 | Toto株式会社 | Visible-light response-type photocatalyst particles and method for manufacturing same |
| JP2016159183A (en) * | 2015-02-26 | 2016-09-05 | 国立研究開発法人産業技術総合研究所 | Visible light responsive composition and photoelectrode, photocatalyst, and photosensor prepared therewith |
| WO2017159564A1 (en) | 2016-03-14 | 2017-09-21 | 旭化成株式会社 | Highly durable antifogging coating film and coating composition |
| CN107149931A (en) * | 2017-04-17 | 2017-09-12 | 天津理工大学 | The preparation method of Zinc oxide quantum dot potassium niobate photochemical catalyst and the purposes of the catalyst |
| CN107149931B (en) * | 2017-04-17 | 2019-11-05 | 天津理工大学 | Zinc oxide quantum dot-preparation method of potassium niobate photochemical catalyst and the purposes of the catalyst |
| WO2019163918A1 (en) | 2018-02-23 | 2019-08-29 | 旭化成株式会社 | High-durability antifogging coating film and coating composition |
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