JP2003160790A - Photocatalyst unit for use in fuel tank - Google Patents
Photocatalyst unit for use in fuel tankInfo
- Publication number
- JP2003160790A JP2003160790A JP2001361387A JP2001361387A JP2003160790A JP 2003160790 A JP2003160790 A JP 2003160790A JP 2001361387 A JP2001361387 A JP 2001361387A JP 2001361387 A JP2001361387 A JP 2001361387A JP 2003160790 A JP2003160790 A JP 2003160790A
- Authority
- JP
- Japan
- Prior art keywords
- photocatalyst
- tio
- fuel tank
- fuel
- semiconductor
- 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
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 63
- 239000002828 fuel tank Substances 0.000 title claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims abstract description 31
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 31
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 5
- 230000001699 photocatalysis Effects 0.000 claims description 5
- 239000003426 co-catalyst Substances 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052717 sulfur Inorganic materials 0.000 abstract description 18
- 239000011593 sulfur Substances 0.000 abstract description 18
- 239000000446 fuel Substances 0.000 abstract description 15
- 239000003054 catalyst Substances 0.000 abstract description 4
- 239000011324 bead Substances 0.000 description 17
- 239000011521 glass Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 10
- -1 cyclic sulfur compounds Chemical class 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229930192474 thiophene Natural products 0.000 description 6
- 125000004434 sulfur atom Chemical group 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 102200118166 rs16951438 Human genes 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Catalysts (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、燃料中の硫黄分を
低減させるための光触媒ユニット、より詳しくは、自動
車等の輸送機関の燃料タンクに装備され、燃料タンク内
で燃料中の硫黄分を低減させるのに適する光触媒ユニッ
トに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photocatalyst unit for reducing the sulfur content in fuel, and more particularly, it is installed in a fuel tank of a transportation system such as an automobile, and the sulfur content in the fuel is kept in the fuel tank. It relates to a photocatalytic unit suitable for reducing.
【０００２】[0002]
【従来の技術】ガソリンや軽油のような自動車等の輸送
機関に使用される燃料には、微量ながら硫黄分が含まれ
ており、この硫黄分は、燃料室で酸化されてＳＯxとな
って環境汚染の原因になり、また、排気ガス浄化用触媒
を被毒させたり、エンジンピストンリングを消耗させる
原因にもなる。2. Description of the Related Art Fuel such as gasoline and light oil used for vehicles such as automobiles contains a small amount of sulfur, which is oxidized in a fuel chamber to become SO x. This may cause environmental pollution, poison the exhaust gas purification catalyst, and wear the engine piston ring.
【０００３】このため、燃料中の硫黄分を出来るだけ低
減させることが望まれており、この硫黄分の除去は、主
として、特開平１１−１８９７７６号公報に記載のよう
に、大型の石油精製プラント内で高温高圧の触媒反応を
利用して行われている。Therefore, it is desired to reduce the sulfur content in the fuel as much as possible, and the removal of the sulfur content is mainly performed in a large-scale oil refining plant as described in JP-A No. 11-189776. It is carried out by utilizing a high temperature and high pressure catalytic reaction.
【０００４】[0004]
【発明が解決しようとする課題】しかるに、自動車等の
燃料タンクには、実際に使用される直前の燃料が一時的
に貯蔵されているため、かかる燃料タンクにおいても硫
黄分を除去することが可能であれば、上記の環境汚染、
触媒被毒等の問題をより効率的に抑制することができ
る。However, since the fuel tank just before being actually used is temporarily stored in the fuel tank of an automobile or the like, it is possible to remove the sulfur content also in the fuel tank. If so, the above environmental pollution,
Problems such as catalyst poisoning can be suppressed more efficiently.
【０００５】ところで、特開平１０−１７６６１５号公
報に、燃料貯蔵槽中で光触媒を利用して燃料を改質する
こと、より詳しくは、燃料の炭化水素に活性酸素種を取
り込ませて燃焼効率を高めることが提案されている。し
かし、光触媒を利用した硫黄分の低減については記載さ
れていない。したがって、本発明は、自動車等の燃料タ
ンク内で効率よく燃料中の硫黄分を除去することができ
る光触媒ユニットを提供することを目的とする。By the way, Japanese Patent Laid-Open No. 10-176615 discloses that a photocatalyst is used to reform a fuel in a fuel storage tank. More specifically, the combustion efficiency is improved by incorporating active oxygen species into hydrocarbon of the fuel. It is proposed to increase. However, there is no description about reduction of sulfur content using a photocatalyst. Therefore, it is an object of the present invention to provide a photocatalyst unit capable of efficiently removing sulfur content in fuel in a fuel tank of an automobile or the like.
【０００６】[0006]
【課題を解決するための手段】上記目的は、燃料タンク
内に光触媒と光源を備えた光触媒ユニットであって、前
記光触媒が、ＴｉＯ2、ＺｎＯ、ＷＯ3、及びＳｎＯ2か
ら選択された少なくとも１種の半導体光触媒と、前記半
導体光触媒に担持されたＭｏ、Ｎｉ、Ｃｏ、及びＲｅか
ら選択された少なくとも１種の助触媒を含むことを特徴
とする光触媒ユニットによって達成される。The above object is a photocatalyst unit having a photocatalyst and a light source in a fuel tank, wherein the photocatalyst is at least one selected from TiO 2 , ZnO, WO 3 , and SnO 2. And a semiconductor photocatalyst of at least one kind and at least one promoter selected from Mo, Ni, Co, and Re supported on the semiconductor photocatalyst.
【０００７】即ち、本発明の光触媒は、特定の半導体光
触媒と助触媒を含んで構成される。こうした光触媒が硫
黄分を除去するメカニズムは以下のように推察される。
例えば、石油中の硫黄化合物には、表１に挙げたように
数多くのものがあり、中でも、環状硫黄化合物のチオフ
ェン類が多く含まれる。That is, the photocatalyst of the present invention comprises a specific semiconductor photocatalyst and a promoter. The mechanism by which such photocatalyst removes sulfur is presumed as follows.
For example, there are many sulfur compounds in petroleum as listed in Table 1, and among them, a large amount of thiophenes, which are cyclic sulfur compounds, are included.
【０００８】ここで、半導体光触媒に固有の波長以下の
光を照射すると、特定のエネルギー準位の電子と正孔が
発生する。このため、石油に接触する半導体光触媒が光
照射されると、電子と正孔が存在する状態で、電子吸引
性の助触媒にチオフェン等の環状化合物のＳ原子が吸着
し、触媒上に固定される。その後、半導体光触媒上に生
じた正孔によりチオフェンの電子が吸引され、チオフェ
ンからＳ原子を脱離させる。When the semiconductor photocatalyst is irradiated with light having a wavelength equal to or shorter than a specific wavelength, electrons and holes having specific energy levels are generated. For this reason, when the semiconductor photocatalyst in contact with petroleum is irradiated with light, the S atom of a cyclic compound such as thiophene is adsorbed on the electron-withdrawing cocatalyst in the state where electrons and holes are present and is fixed on the catalyst. It After that, the electrons of thiophene are attracted by the holes generated on the semiconductor photocatalyst, and the S atom is desorbed from the thiophene.
【０００９】助触媒に吸着し、チオフェン等から脱離し
たＳ原子は、燃料中のＨ+等と反応してＨ2Ｓとなり、一
方で硫黄化合物からＳ原子が脱離して生成した炭化水素
ラジカルは、燃料中のＨ+等と反応して安定化する。図
１は、このように推察されるメカニズムをチオフェンに
ついてモデル的に示すものである。The S atom adsorbed on the cocatalyst and desorbed from thiophene or the like reacts with H + or the like in the fuel to become H 2 S, while the hydrocarbon radical generated by desorption of the S atom from the sulfur compound. Is stabilized by reacting with H + and the like in the fuel. FIG. 1 shows the mechanism inferred in this way as a model for thiophene.
【００１０】[0010]
【発明の実施の形態】本発明は、燃料タンク内に光触媒
と光源を備えた光触媒ユニットであって、前記光触媒
が、ＴｉＯ2、ＺｎＯ、ＷＯ3、及びＳｎＯ2から選択さ
れた少なくとも１種の半導体光触媒と、前記半導体光触
媒に担持されたＭｏ、Ｎｉ、Ｃｏ、及びＲｅから選択さ
れた少なくとも１種の助触媒を含むことを特徴とする。BEST MODE FOR CARRYING OUT THE INVENTION The present invention is a photocatalyst unit having a photocatalyst and a light source in a fuel tank, wherein the photocatalyst is at least one selected from TiO 2 , ZnO, WO 3 , and SnO 2 . It is characterized by containing a semiconductor photocatalyst and at least one cocatalyst selected from Mo, Ni, Co and Re supported on the semiconductor photocatalyst.
【００１１】ＴｉＯ2、ＺｎＯ、ＷＯ3、及びＳｎＯ2か
ら選択された少なくとも１種の半導体光触媒は、好まし
くは、数ｎｍ〜数１００ｎｍ(ナノメートル)の平均粒子
径を有するものが使用される。At least one semiconductor photocatalyst selected from TiO 2 , ZnO, WO 3 , and SnO 2 is preferably used, which has an average particle diameter of several nm to several 100 nm (nanometer).
【００１２】このようなＴｉＯ2等の半導体光触媒とＭ
ｏ等の助触媒は、好ましくは、図２に示すように、ガラ
ス又はプラスチック製の中空ビーズの基材に層状に固定
される。中空ビーズに固定すれば、中空ビーズの気固界
面で光の屈折と散乱が生じ、また、燃料の液面に光触媒
が浮遊することから、光源からの光を効率よく光触媒に
照射することができるためである。この中空ビーズの直
径は、０.１〜１０ｍｍが一応の目安である。A semiconductor photocatalyst such as TiO 2 and M
The cocatalyst such as o is preferably fixed in a layer form on a substrate of hollow beads made of glass or plastic, as shown in FIG. When fixed to the hollow beads, light is refracted and scattered at the gas-solid interface of the hollow beads, and since the photocatalyst floats on the liquid surface of the fuel, the light from the light source can be efficiently irradiated to the photocatalyst. This is because. The diameter of the hollow beads is 0.1 to 10 mm as a rough standard.
【００１３】ＴｉＯ2等の半導体光触媒の粉末を中空ビ
ーズの基材に固定するのは、限定されるものではない
が、ＴｉＯ2等の粉末を中空ビーズにコーティングした
後、そのガラス又はプラスチックの溶融温度内で加熱す
ることにより行うことができる。あるいは、ＴｉＯ2等
の粉末を高速で基材に衝突させて、基材に部分的に埋設
させることによって固定することができる。Fixing the semiconductor photocatalyst powder such as TiO 2 to the base material of the hollow beads is not limited, but the powder such as TiO 2 is coated on the hollow beads and then the glass or plastic is melted. It can be carried out by heating within the temperature. Alternatively, the powder can be fixed by colliding powder such as TiO 2 with the base material at high speed and partially embedding it in the base material.
【００１４】また、Ｔｉ(ＯＣ3Ｈ7)4等のアルコキシド
化合物からＴｉＯ2粒子を調製しつつガラス基板等に固
定することもできる。この場合、Ｔｉ(ＯＣ3Ｈ7)4等の
アルコキシド化合物のエタノール等の溶液で希釈し、ガ
ラスビーズを浸漬する。その後、ガラスビーズを溶液か
ら取り出して室温で放置等することによってアルコキシ
ド化合物を加水分解させ、次いで、大気雰囲気中で４０
０〜７００℃の焼成に供することによって、ＴｉＯ2等
に粒子化させると同時に基材に固定することもできる。It is also possible to fix TiO 2 particles on a glass substrate or the like while preparing TiO 2 particles from an alkoxide compound such as Ti (OC 3 H 7 ) 4 . In this case, the glass beads are immersed by diluting with a solution of an alkoxide compound such as Ti (OC 3 H 7 ) 4 such as ethanol. Then, the glass beads are taken out of the solution and left at room temperature to hydrolyze the alkoxide compound, and then the alkoxide compound is hydrolyzed in an atmosphere of 40%.
By subjecting it to calcination at 0 to 700 ° C., it is possible to make it into particles such as TiO 2 and at the same time fix it to the substrate.
【００１５】Ｍｏ、Ｎｉ、Ｃｏ、及びＲｅから選択され
た少なくとも１種の助触媒が、このＴｉＯ2等の半導体
光触媒に担持される。これらの助触媒は、酸化物ではな
い金属の形態又は金属酸化物の形態のいずれでもよい。At least one promoter selected from Mo, Ni, Co, and Re is supported on the semiconductor photocatalyst such as TiO 2 . These cocatalysts may be in the form of metals that are not oxides or in the form of metal oxides.
【００１６】これらの助触媒の担持は、例えば、上記の
ようにして中空ビーズに固定されたＴｉＯ2等の半導体
光触媒に、通常の蒸発乾固法で担持することでよく、よ
り詳しくは、Ｍｏ又はＭｏＯ等のアンモニウム塩等をＴ
ｉＯ2等の半導体光触媒に含浸し、次いで乾燥すること
によって行うことができる。The supporting of these co-catalysts may be carried out, for example, on a semiconductor photocatalyst such as TiO 2 fixed to the hollow beads as described above by a usual evaporation dry solidification method. Alternatively, ammonium salt such as MoO may be used as T
It can be carried out by impregnating a semiconductor photocatalyst such as io 2 and then drying.
【００１７】好ましくは、ＴｉＯ2等の半導体光触媒に
Ｍｏ等の助触媒を担持したものを、上記の中空ビーズに
固定する。より詳しくは、Ｍｏ又はＭｏＯ等のアンモニ
ウム塩等をＴｉＯ2等の半導体光触媒の粉末に含浸し、
次いで乾燥と例えば３００〜８００℃×１〜５時間の焼
成を行った後、この助触媒を担持したＴｉＯ2等の粉末
を、上記の中空ビーズについて示した仕方で固定する。Preferably, a semiconductor photocatalyst such as TiO 2 carrying a promoter such as Mo is fixed to the hollow beads. More specifically, a powder of a semiconductor photocatalyst such as TiO 2 is impregnated with an ammonium salt such as Mo or MoO,
Then, after drying and calcining at, for example, 300 to 800 ° C. for 1 to 5 hours, the powder of TiO 2 or the like carrying the co-catalyst is fixed in the manner described above for the hollow beads.
【００１８】これにより、ＴｉＯ2等の半導体光触媒に
Ｍｏ又はＭｏＯ等の助触媒がより強固に担持された光触
媒を得ることができる。また、上記のようにＴｉ(ＯＣ3
Ｈ7)4等のアルコキシド化合物を用いた場合、Ｍｏ等の
アンモニウム塩等の化合物をアルコキシド化合物の溶液
中に添加し、次いで、上記と同様にしてＴｉＯ2等に粒
子化させることで、ＴｉＯ2等を基材に固定すると同時
にＴｉＯ2等にＭｏ等を担持することもできる。This makes it possible to obtain a photocatalyst in which a promoter such as Mo or MoO is more strongly supported on a semiconductor photocatalyst such as TiO 2 . In addition, as described above, Ti (OC 3
When using H 7) alkoxide compounds such as 4, compounds such as ammonium salts such as Mo was added to a solution of an alkoxide compound, then, by the particles of the TiO 2 or the like in the same manner as described above, TiO 2 It is also possible to support Mo etc. on TiO 2 etc. at the same time as fixing them etc. to the substrate.
【００１９】あるいは、このようなＴｉＯ2等の半導体
光触媒とＭｏ又はＭｏＯ等の助触媒は、膜の状態で固定
されて、図３のように燃料タンク内に配置されることも
できる。より詳しくは、ガラス、プラスチック、金属等
の板状材料を基材として、上記のビーズについて示した
ようにして、基材の表面に層状に半導体光触媒を固定し
た後、助触媒を担持する、又は助触媒を担持した半導体
光触媒を固定し、その板状材料を燃料タンクの光源に曝
される位置に配置することができる。Alternatively, such a semiconductor photocatalyst such as TiO 2 and a cocatalyst such as Mo or MoO can be fixed in the form of a film and placed in the fuel tank as shown in FIG. More specifically, glass, plastic, a plate-shaped material such as metal is used as a substrate, and after fixing the semiconductor photocatalyst in a layered manner on the surface of the substrate as described above for the beads, the cocatalyst is supported, or The semiconductor photocatalyst carrying the co-catalyst can be fixed, and the plate-shaped material can be arranged at a position of the fuel tank exposed to the light source.
【００２０】なお、金属の板状材料に半導体光触媒を固
定するのは、粉末を高温高圧で溶射する等の各種手段を
採用することができる。このようにして基材に固定され
る助触媒／半導体光触媒の質量比は、好ましくは０.０
０１〜０.１、より好ましくは０.００３〜０.０５であ
る。The semiconductor photocatalyst may be fixed to the metal plate material by various means such as thermal spraying of powder at high temperature and high pressure. The mass ratio of the cocatalyst / semiconductor photocatalyst thus fixed to the substrate is preferably 0.0.
It is 01 to 0.1, and more preferably 0.003 to 0.05.
【００２１】光源は、使用される半導体光触媒に見合っ
たもの、即ち、電子が価電子帯から伝導帯に励起される
波長の光源が使用され、ＴｉＯ2であれば３９０ｎｍ以
下、ＺｎＯであれば３６０ｎｍ以下、ＷＯ3であれば４
７０ｎｍ以下、及びＳｎＯ2であれば３５０ｎｍ以下の
波長を有する紫外線光源が使用される。As the light source, a light source suitable for the semiconductor photocatalyst used, that is, a light source having a wavelength at which electrons are excited from the valence band to the conduction band is used, 390 nm or less for TiO 2 and 360 nm for ZnO. Below, if WO 3 is 4
An ultraviolet light source having a wavelength of 70 nm or less and 350 nm or less for SnO 2 is used.
【００２２】本発明の光触媒ユニットは、上記に説明し
た光触媒と光源が燃料タンク内に配置されて構成され、
自動車等の各種の用途にユニットとして使用されること
ができる。この光触媒ユニットは、光を照射したときに
硫黄分除去の機能を提供するため、例えば、エンジン始
動時の一定時間のみ光を照射することで、燃料の使用に
応じた光源の消費電力とすることができる。以下、実施
例によって本発明をより具体的に説明する。The photocatalyst unit of the present invention comprises the above-mentioned photocatalyst and a light source arranged in a fuel tank.
It can be used as a unit for various applications such as automobiles. This photocatalyst unit provides the function of removing sulfur when irradiated with light.For example, by irradiating light for a certain period of time when the engine is started, the power consumption of the light source is adjusted according to the use of fuel. You can Hereinafter, the present invention will be described more specifically with reference to Examples.
【００２３】[0023]
【実施例】実施例１
半導体光触媒としてＴｉＯ2(平均粒子径１０ｎｍ)を使
用し、助触媒をＭｏとして、以下のようにして本発明の
光触媒を調製した。ＴｉＯ2粉末の２０ｇをイオン交換
水の２００ｇに分散させてスラリーにし、次いで、パラ
モリブデン酸アンモニウムの０.８ｇを加えて攪拌した
後、乾燥し、窒素雰囲気中で５００℃×２時間の加熱を
行い、ＴｉＯ2粉末にＭｏを担持した。Example 1 A photocatalyst of the present invention was prepared as follows using TiO 2 (average particle diameter 10 nm) as a semiconductor photocatalyst and Mo as a cocatalyst. 20 g of TiO 2 powder was dispersed in 200 g of ion-exchanged water to form a slurry, then 0.8 g of ammonium paramolybdate was added and stirred, and then dried, and heated in a nitrogen atmosphere at 500 ° C. for 2 hours. Then, Mo was supported on the TiO 2 powder.
【００２４】次いで、このＭｏ担持ＴｉＯ2粉末の１０
ｇをイソプロピルアルコールの４０ｇに分散させてスラ
リーにし、このスラリーに、図２に示すような外径１０
ｍｍ×中空部外径６ｍｍの中空ガラスビーズの１０ｇを
投入して攪拌した後、ろ過・乾燥し、窒素雰囲気中で５
００℃×２時間の加熱を行い、Ｍｏ担持ＴｉＯ2粉末を
ガラスビーズに固定した。得られたＭｏ／ＴｉＯ2／ガ
ラスビーズの質量比は３／１００／１０００であった。Next, 10 parts of this TiO 2 powder supporting Mo are prepared.
g in 40 g of isopropyl alcohol to form a slurry, and the slurry was added to the outside diameter 10
mm × Hollow part 6 g of hollow glass beads with an outer diameter of 6 mm are added and stirred, then filtered and dried, and then 5 in a nitrogen atmosphere.
Heating was carried out at 00 ° C. for 2 hours to fix the Mo-supporting TiO 2 powder on the glass beads. The obtained Mo / TiO 2 / glass bead mass ratio was 3/100/1000.
【００２５】次いで、このガラスビーズの１０ｇを硫黄
分５００ｐｐｍの軽油２００ｇに加え、ガラスビーズを
軽油に浮かせた状態で、室温にて主波長３６０ｎｍ×出
力４００Ｗの紫外線光源に５時間にわたって曝した。こ
の紫外線照射後の軽油中の硫黄分を測定したところ、１
９０ｐｐｍに低下していた。Next, 10 g of the glass beads were added to 200 g of light oil having a sulfur content of 500 ppm, and the glass beads were floated in the light oil and exposed to an ultraviolet light source having a main wavelength of 360 nm × output of 400 W for 5 hours at room temperature. When the sulfur content in the light oil after this ultraviolet irradiation was measured, it was 1
It had dropped to 90 ppm.
【００２６】実施例２〜４
半導体光触媒としてＴｉＯ2の他にＺｎＯ、ＷＯ3を用
い、助触媒としてＭｏの他にＣｏを用いた以外は実施例
１と同様にして、表２に摘要を示す光触媒を調製し、紫
外線光源に５時間にわたって曝した後の軽油中の硫黄分
を測定した。助触媒／ＴｉＯ2の質量比は、いずれも３
／１００とした。この結果を表２にまとめて示す。Examples 2 to 4 Table 2 shows a summary in the same manner as in Example 1 except that ZnO and WO 3 were used in addition to TiO 2 as the semiconductor photocatalyst, and Co was used in addition to Mo as the cocatalyst. A photocatalyst was prepared and the sulfur content in the gas oil was measured after exposure to a UV light source for 5 hours. The mass ratio of cocatalyst / TiO 2 is 3 in each case.
/ 100. The results are summarized in Table 2.
【００２７】比較例１〜２
半導体光触媒としてＴｉＯ2の他にＺｎＯを用い、助触
媒は用いない以外は実施例１と同様にして、表２に摘要
を示す光触媒を調製し、紫外線光源に５時間にわたって
曝した後の軽油中の硫黄分を測定した。この結果を表２
に併せて示す。表２に示した硫黄分の濃度より、本発明
による硫黄分低減の効果は明らかである。Comparative Examples 1 and 2 A photocatalyst whose outline is shown in Table 2 was prepared in the same manner as in Example 1 except that ZnO was used as the semiconductor photocatalyst in addition to TiO 2 and no cocatalyst was used. The sulfur content in the gas oil after exposure over time was measured. The results are shown in Table 2.
Are also shown. From the concentration of sulfur content shown in Table 2, the effect of reducing the sulfur content according to the present invention is clear.
【００２８】[0028]
【発明の効果】自動車等の燃料タンク内で効率よく燃料
中の硫黄分を除去する光触媒ユニットを提供することこ
とができる。EFFECTS OF THE INVENTION It is possible to provide a photocatalyst unit that efficiently removes sulfur in fuel in a fuel tank of an automobile or the like.
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【表２】 [Table 2]
【図１】本発明の光触媒の作用をモデル的に示す図であ
る。FIG. 1 is a model view showing the action of the photocatalyst of the present invention.
【図２】本発明の光触媒が使用される態様を例示する図
である。FIG. 2 is a diagram illustrating an embodiment in which the photocatalyst of the present invention is used.
【図３】本発明の光触媒ユニットの構成を例示する図で
ある。FIG. 3 is a diagram illustrating a configuration of a photocatalytic unit of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０１Ｊ 35/02 Ｃ１０Ｇ 29/04 Ｃ１０Ｇ 29/04 29/16 29/16 32/00 Ｚ 32/00 Ｆ０２Ｍ 21/02 Ｆ Ｆ０２Ｍ 21/02 27/02 Ａ 27/02 Ｂ０１Ｊ 23/74 ３１１Ｍ Ｆターム(参考） 4G069 AA03 AA08 BA04A BA04B BA48A BB04A BB04B BC22A BC35A BC35B BC59A BC59B BC60A BC60B BC64A BC67A BC67B BC68A CA03 CA12 DA08 EA02Y FA02 4H015 AA24 AA26 AB06 BA08 BB01─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B01J 35/02 C10G 29/04 C10G 29/04 29/16 29/16 32/00 Z 32/00 F02M 21 / 02 F F02M 21/02 27/02 A 27/02 B01J 23/74 311M F term (reference) 4G069 AA03 AA08 BA04A BA04B BA48A BB04A BB04B BC22A BC35A BC35B BC59A BC59B BC60A BC60B BC64A BC67A BC67B FA08A CA02B02 CA02A AA26 AB06 BA08 BB01
Claims (2)
触媒ユニットであって、前記光触媒が、ＴｉＯ2、Ｚｎ
Ｏ、ＷＯ3、及びＳｎＯ2から選択された少なくとも１種
の半導体光触媒と、前記半導体光触媒に担持されたＭ
ｏ、Ｎｉ、Ｃｏ、及びＲｅから選択された少なくとも１
種の助触媒を含むことを特徴とする光触媒ユニット。1. A photocatalyst unit comprising a photocatalyst and a light source in a fuel tank, wherein the photocatalyst is TiO 2 , Zn.
At least one semiconductor photocatalyst selected from O, WO 3 , and SnO 2 , and M supported on the semiconductor photocatalyst
at least one selected from o, Ni, Co, and Re
A photocatalytic unit comprising a seed co-catalyst.
０１〜０.１である請求項１に記載の光触媒ユニット。2. A mass ratio of cocatalyst / semiconductor photocatalyst is 0.0.
The photocatalytic unit according to claim 1, wherein the photocatalytic unit is from 01 to 0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001361387A JP2003160790A (en) | 2001-11-27 | 2001-11-27 | Photocatalyst unit for use in fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001361387A JP2003160790A (en) | 2001-11-27 | 2001-11-27 | Photocatalyst unit for use in fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003160790A true JP2003160790A (en) | 2003-06-06 |
Family
ID=19172060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001361387A Pending JP2003160790A (en) | 2001-11-27 | 2001-11-27 | Photocatalyst unit for use in fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003160790A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005121540A1 (en) * | 2004-06-09 | 2005-12-22 | Fuji Kihan Co., Ltd. | Fuel reformer |
| WO2010004986A1 (en) * | 2008-07-07 | 2010-01-14 | 株式会社 For-C | Method for refining natural oil |
| WO2014056790A1 (en) * | 2012-10-08 | 2014-04-17 | Innano As | Treatment of fuel |
| JP2016016337A (en) * | 2014-07-04 | 2016-02-01 | シャープ株式会社 | Photocatalytic material |
| US10626829B2 (en) | 2017-04-20 | 2020-04-21 | Toyota Jidosha Kabushiki Kaisha | Fuel reformer for vehicle |
| WO2023079766A1 (en) * | 2021-11-03 | 2023-05-11 | アンデス電気株式会社 | Photocatalyst antibacterial deodorizing material, method for producing same, antibacterial deodorizing material, and antibacterial deodorizing filter |
-
2001
- 2001-11-27 JP JP2001361387A patent/JP2003160790A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005121540A1 (en) * | 2004-06-09 | 2005-12-22 | Fuji Kihan Co., Ltd. | Fuel reformer |
| JPWO2005121540A1 (en) * | 2004-06-09 | 2008-04-10 | 株式会社不二機販 | Fuel reformer |
| WO2010004986A1 (en) * | 2008-07-07 | 2010-01-14 | 株式会社 For-C | Method for refining natural oil |
| JP5534455B2 (en) * | 2008-07-07 | 2014-07-02 | 株式会社 Ｆｏｒ−Ｃ | Method for refining natural oil |
| WO2014056790A1 (en) * | 2012-10-08 | 2014-04-17 | Innano As | Treatment of fuel |
| JP2016016337A (en) * | 2014-07-04 | 2016-02-01 | シャープ株式会社 | Photocatalytic material |
| US10626829B2 (en) | 2017-04-20 | 2020-04-21 | Toyota Jidosha Kabushiki Kaisha | Fuel reformer for vehicle |
| WO2023079766A1 (en) * | 2021-11-03 | 2023-05-11 | アンデス電気株式会社 | Photocatalyst antibacterial deodorizing material, method for producing same, antibacterial deodorizing material, and antibacterial deodorizing filter |
| JP2023068678A (en) * | 2021-11-03 | 2023-05-18 | アンデス電気株式会社 | Photocatalytic antibacterial deodorant, manufacturing method thereof, antibacterial deodorant, and antibacterial deodorant filter |
| JP7436992B2 (en) | 2021-11-03 | 2024-02-22 | アンデス電気株式会社 | Photocatalytic antibacterial deodorizing material, its manufacturing method, antibacterial deodorizing material, and antibacterial deodorizing filter |
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