JPH01315341A - Oxidation catalyst and production thereof - Google Patents
Oxidation catalyst and production thereofInfo
- Publication number
- JPH01315341A JPH01315341A JP63107327A JP10732788A JPH01315341A JP H01315341 A JPH01315341 A JP H01315341A JP 63107327 A JP63107327 A JP 63107327A JP 10732788 A JP10732788 A JP 10732788A JP H01315341 A JPH01315341 A JP H01315341A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- gold
- oxidation catalyst
- iron
- ions
- 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
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 25
- 239000003054 catalyst Substances 0.000 title claims abstract description 24
- 230000003647 oxidation Effects 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 98
- -1 iron ions Chemical class 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000010931 gold Substances 0.000 claims abstract description 21
- 229910052737 gold Inorganic materials 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 230000002378 acidificating effect Effects 0.000 claims abstract description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 239000012670 alkaline solution Substances 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 150000002506 iron compounds Chemical class 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 229960002089 ferrous chloride Drugs 0.000 abstract description 6
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- NPEWZDADCAZMNF-UHFFFAOYSA-N gold iron Chemical compound [Fe].[Au] NPEWZDADCAZMNF-UHFFFAOYSA-N 0.000 abstract 2
- 231100000614 poison Toxicity 0.000 abstract 2
- 230000007096 poisonous effect Effects 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 229910002091 carbon monoxide Inorganic materials 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical class O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 229910002090 carbon oxide Inorganic materials 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002341 toxic gas Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 208000001300 Perinatal Death Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 150000002343 gold Chemical class 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は一酸化炭素を効果的に除去し得る酸化触媒及び
その製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an oxidation catalyst capable of effectively removing carbon monoxide and a method for producing the same.
（従来の技術）
毒性の強い一酸化炭素（ＣＯ）は血液中のヘモグロビン
（Ｈｂ）に対して親和力が高く、−酸化炭素ヘモグロビ
ン（ＣＯＨｂ）を生成して血液の酸素授受を阻害し酸素
欠乏症を生じ易い。人為的なＣＯ発生源である喫煙では
心臓血管障害を助長するばかりか、妊婦においては胎児
異常や流産、周産期死亡を誘発する恐れがある。(Prior art) Carbon monoxide (CO), which is highly toxic, has a high affinity for hemoglobin (Hb) in the blood, and produces -carbohemoglobin (COHb), which inhibits the exchange of oxygen in the blood and causes anoxia. Easy to occur. Smoking, which is an artificial source of CO, not only promotes cardiovascular disorders, but also risks inducing fetal abnormalities, miscarriage, and perinatal death in pregnant women.
従来、この−酸化炭素の除去手段として活性炭が一般に
用いられている。この活性炭は一酸化炭素に限らず種々
の気体の吸着力及び脱臭力に優れている。Conventionally, activated carbon has been generally used as a means for removing this carbon oxide. This activated carbon has excellent adsorption power and deodorizing power not only for carbon monoxide but also for various gases.
（発明が解決しようとする課題）
しかしながら、このような活性炭でも一酸化炭素を含む
有毒ガスの吸着容量が限られており、また−酸化炭素の
みを効果的に除去することができないという問題点があ
った。(Problems to be Solved by the Invention) However, even such activated carbon has a limited adsorption capacity for toxic gases including carbon monoxide, and also has the problem that only carbon oxides cannot be effectively removed. there were.
本発明は前記問題点に鑑みてなされたものであり、毒性
の強い一酸化炭素を効果的に除去し得る酸化触媒及びそ
の製造方法を提供することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide an oxidation catalyst that can effectively remove highly toxic carbon monoxide, and a method for producing the same.
（課題を解決するための手段）
本発明は前記目的を達成するために、活性炭の多孔中に
金と鉄の化合物を固定させて酸化触媒を構成している。(Means for Solving the Problems) In order to achieve the above object, the present invention constitutes an oxidation catalyst by fixing a compound of gold and iron in the pores of activated carbon.
また、この酸化触媒を、金イオンと鉄イオンとを少なく
とも含む酸性水溶液を活性炭に吸収させ、該活性炭をア
ルカリ性溶液で中和した後、真空中で加熱することによ
り製造している。また、金イオンと鉄イオンとを少なく
とも含む酸性水溶液を活性炭に吸収させ、該活性炭をア
ルカリ性溶液で中和した後、酸化雰囲気中で焼成するこ
とにより製造している。Moreover, this oxidation catalyst is manufactured by making activated carbon absorb an acidic aqueous solution containing at least gold ions and iron ions, neutralizing the activated carbon with an alkaline solution, and then heating the activated carbon in a vacuum. Further, it is produced by absorbing an acidic aqueous solution containing at least gold ions and iron ions into activated carbon, neutralizing the activated carbon with an alkaline solution, and then firing it in an oxidizing atmosphere.
（作 用）
本発明に係る酸化触媒によれば、活性炭の多孔中に固定
された金と鉄の化合物により一酸化炭素の酸化反応が促
進され、該−酸化炭素が無毒な二酸化炭素に転化される
とともに、他の有毒ガスは活性炭固有の吸着力により吸
収し除去される。また、前記化合物の炭素に接している
部分には還元型のＦｅＯ２が存在し、また酸素に接して
いる部分には酸化型のＦｅ２Ｏ３が存在していて、金と
ＦｅＯ２とＦｅ２Ｏ３がカーボンの表面上で特異な接触
をしていると推察され、これによりこの酸化触媒は広い
温度範囲において高い強度と活性を示し、あらゆる反応
条件下で安定した効果を発揮する。(Function) According to the oxidation catalyst of the present invention, the oxidation reaction of carbon monoxide is promoted by the gold and iron compound fixed in the pores of activated carbon, and the carbon oxide is converted into non-toxic carbon dioxide. At the same time, other toxic gases are absorbed and removed by activated carbon's unique adsorption power. In addition, reduced FeO2 is present in the part of the compound that is in contact with carbon, and oxidized Fe2O3 is present in the part that is in contact with oxygen, and gold, FeO2, and Fe2O3 are present on the surface of carbon. It is presumed that this oxidation catalyst has a unique contact between the two, and as a result, this oxidation catalyst exhibits high strength and activity over a wide temperature range, and exhibits stable effects under all reaction conditions.
また、この酸化触媒は金イオンと鉄イオンとを少なくと
も含む酸性水溶液を活性炭に吸収させ、該活性炭をアル
カリ性溶液で中和し活性炭に吸収された溶液中の金イオ
ンと鉄イオンを沈澱物として活性炭の多孔中に生成した
後、この活性炭を真空中で加熱し前記沈澱物を金と鉄の
金属に変換することで的確且つ効率良く製造することが
できる。In addition, this oxidation catalyst allows activated carbon to absorb an acidic aqueous solution containing at least gold ions and iron ions, neutralizes the activated carbon with an alkaline solution, and converts the gold ions and iron ions in the solution absorbed into the activated carbon into precipitates. After being generated in the pores of the activated carbon, the activated carbon is heated in a vacuum to convert the precipitate into gold and iron metals, thereby making it possible to produce the activated carbon accurately and efficiently.
また、中和の後活性炭を酸化雰囲気中で焼成することに
よっても同様に製造することができる。Moreover, it can be similarly produced by firing activated carbon in an oxidizing atmosphere after neutralization.
（実施例）
本発明に係る酸化触媒は、活性炭の多孔中に金と鉄の化
合物を固定させたもので、以下にその好適な製造方法に
ついて説明する。(Example) The oxidation catalyst according to the present invention is one in which a compound of gold and iron is fixed in the pores of activated carbon, and a suitable manufacturing method thereof will be described below.
まず、塩化第１鉄（ＦｅＣ，１）２）と該塩化第１鉄１
００重量部に対して０．５重量部の塩化金酸（ＨＡｕＣ
Ｎ４）を、塩化水素の水溶液１００ ｍｌに添加し充分
に攪拌して溶解する。次に、この酸性溶液全量を２００
ｇの粒状活性炭に吸収させる。First, ferrous chloride (FeC, 1) 2) and the ferrous chloride 1
0.5 parts by weight of chloroauric acid (HAuC)
Add N4) to 100 ml of an aqueous solution of hydrogen chloride and stir thoroughly to dissolve. Next, the total amount of this acidic solution was
Absorb on granular activated carbon of 100 g.
次に、この活性炭にアンモニア水を適量散布して中性に
中和する。この中和反応により金イオンと鉄イオンの化
合物が活性炭の多孔中に沈澱し生成される。この後、前
記活性炭を真空中で３００℃以上好ましくは１０００℃
以上で加熱し、活性炭の多孔中に金属塩として生成され
た沈澱物を金と鉄の金属に変換する。Next, an appropriate amount of ammonia water is sprinkled on the activated carbon to neutralize it. This neutralization reaction produces a compound of gold ions and iron ions that precipitates in the pores of the activated carbon. After that, the activated carbon is heated to 300°C or more preferably 1000°C in vacuum.
By heating above, the precipitates formed as metal salts in the pores of the activated carbon are converted into gold and iron metals.
以上のようにして製造された酸化触媒を煙草のフィルタ
として用いた場合の反応結果を下表に示す。The reaction results when the oxidation catalyst produced as described above was used as a cigarette filter are shown in the table below.
表
＊１：煙草（商品名： ＬＡＲＫ）のフィルタを取除い
たもの。Table *1: Cigarettes (product name: LARK) with the filter removed.
＊２：繊維状フィルタ間に粒状活性炭０．０６４ｇを充
填してなるもの。*2: Made by filling 0.064g of granular activated carbon between the fibrous filters.
＊３：＊２の活性炭の代りに前記酸化触媒０゜０６４ｇ
を充填したもの。*3: 0°064g of the above oxidation catalyst instead of the activated carbon in *2
filled with.
前記反応結果は、点火約１分後に煙草の煙をフィルタ無
しの状態で、また従来のフィルタを通して、また本発明
に係るフィルタを通して夫々注射器を用いて吸引し、各
吸引ガス中の一酸化炭素の濃度をガスクロマトグラフ法
にて分析した結果を示すものである。The above reaction results were obtained by inhaling cigarette smoke with a syringe without a filter, through a conventional filter, and through the filter of the present invention about 1 minute after ignition, and measuring the amount of carbon monoxide in each inhaled gas. This shows the results of concentration analysis using gas chromatography.
このように、本発明に係る酸化触媒を用いたフィルタに
よれば、吸引ガス中の一酸化炭素の濃度を従来の活性炭
フィルタに比べて約１／３に低減することができ、また
吸引ガス中の一酸化炭素を８４．８％除去することがで
きた。また、−酸化炭素以外の他の有毒ガスは従来と同
様に活性炭固有の吸着力により吸収し除去することがで
きたことを付記する。As described above, according to the filter using the oxidation catalyst according to the present invention, the concentration of carbon monoxide in the suction gas can be reduced to about 1/3 compared to the conventional activated carbon filter. It was possible to remove 84.8% of carbon monoxide. It should also be noted that toxic gases other than -carbon oxide could be absorbed and removed by the adsorption power inherent in activated carbon, as in the conventional case.
尚、先に述べた製造方法において、塩化第１鉄と塩化金
酸を溶解する酸性水溶液は硫酸、硝酸等の他の酸性水溶
液で代用してもよく、また塩化金酸の配合割合は塩化第
１鉄１００重量部に対して０．１〜１０重量部の範囲内
であれば前記と同様の効果を発揮することができる。ま
た、塩化第１鉄及び塩化金酸は溶解によって金イオンと
鉄イオンを生ずるものであれば他の金塩や鉄塩であって
もよい。更に、中和に使用したアンモニア水は水酸化ナ
トリウム水溶液等の他のアルカリ性溶液で代用できる。In the production method described above, the acidic aqueous solution for dissolving ferrous chloride and chloroauric acid may be substituted with other acidic aqueous solutions such as sulfuric acid or nitric acid, and the blending ratio of ferrous chloride If the amount is within the range of 0.1 to 10 parts by weight per 100 parts by weight of iron, the same effects as described above can be achieved. Further, ferrous chloride and chloroauric acid may be other gold salts or iron salts as long as they produce gold ions and iron ions upon dissolution. Furthermore, the ammonia water used for neutralization can be replaced with other alkaline solutions such as an aqueous sodium hydroxide solution.
更にまた、中和の後、活性炭を真空中で加熱したものを
示したが、該活性炭を空気等の酸化雰囲気中で好ましく
は３００℃以上で焼成するようにしても同様の酸化触媒
を製造することができる。Furthermore, although activated carbon is heated in vacuum after neutralization, similar oxidation catalysts can be produced by calcining the activated carbon in an oxidizing atmosphere such as air, preferably at 300° C. or higher. be able to.
（発明の効果）
以上説明したように、活性炭の多孔中に金と鉄の化合物
を固定させた本発明の酸化触媒によれば、金と鉄の化合
物により一酸化炭素の酸化反応を促進して、該−酸化炭
素を無毒な二酸化炭素に転化することができるとともに
、他の有毒ガスを活性炭固有の吸着力により吸収し除去
することができる。また、この酸化触媒は広い温度範囲
において高い強度と活性を有するので、あらゆる反応条
件下で安定した効果を得ることができる。したがって、
家庭用、自動車用のエアフィルタや、煙草及び喫煙パイ
プのフィルタや、各種暖房機、ボイラー及び自動車の排
気ガス触媒や、防災マスク等に広く活用でき、また顕著
な効果を発揮することができる。(Effects of the Invention) As explained above, according to the oxidation catalyst of the present invention in which a compound of gold and iron is fixed in the pores of activated carbon, the oxidation reaction of carbon monoxide is promoted by the compound of gold and iron. , the carbon oxide can be converted into non-toxic carbon dioxide, and other toxic gases can be absorbed and removed by the inherent adsorption power of activated carbon. Furthermore, since this oxidation catalyst has high strength and activity over a wide temperature range, stable effects can be obtained under all reaction conditions. therefore,
It can be widely used in household and automobile air filters, cigarette and smoking pipe filters, various heaters, boilers and automobile exhaust gas catalysts, disaster prevention masks, etc., and can exhibit remarkable effects.
また、この酸化触媒は金イオンと鉄イオンとを少なくと
も含む酸性水溶液を活性炭に吸収させ、該活性炭をアル
カリ性溶液で中和し活性炭に吸収された溶液中の金イオ
ンと鉄イオンを沈澱物として活性炭の多孔中に生成した
後、この活性炭を真空中で加熱し前記沈澱物を金と鉄の
金属に変換することで的確且つ効率良く製造することが
でき、また中和の後活性炭を酸化雰囲気中で焼成するこ
とによっても同様に製造することができる。In addition, this oxidation catalyst allows activated carbon to absorb an acidic aqueous solution containing at least gold ions and iron ions, neutralizes the activated carbon with an alkaline solution, and converts the gold ions and iron ions in the solution absorbed into the activated carbon into precipitates. It can be produced accurately and efficiently by heating this activated carbon in a vacuum and converting the precipitate into gold and iron metals, and after neutralization, the activated carbon is heated in an oxidizing atmosphere. It can also be produced in the same way by firing.
Claims (3)
とを特徴とする酸化触媒。(1) An oxidation catalyst characterized by having a gold and iron compound fixed in the pores of activated carbon.
液を活性炭に吸収させ、該活性炭をアルカリ性溶液で中
和した後、真空中で加熱したことことを特徴とする酸化
触媒の製造方法。(2) A method for producing an oxidation catalyst, characterized in that an acidic aqueous solution containing at least gold ions and iron ions is absorbed into activated carbon, the activated carbon is neutralized with an alkaline solution, and then heated in vacuum.
液を活性炭に吸収させ、該活性炭をアルカリ性溶液で中
和した後、酸化雰囲気中で焼成したことを特徴とする酸
化触媒の製造方法。(3) A method for producing an oxidation catalyst, characterized in that an acidic aqueous solution containing at least gold ions and iron ions is absorbed into activated carbon, the activated carbon is neutralized with an alkaline solution, and then calcined in an oxidizing atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63107327A JPH01315341A (en) | 1988-04-28 | 1988-04-28 | Oxidation catalyst and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63107327A JPH01315341A (en) | 1988-04-28 | 1988-04-28 | Oxidation catalyst and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01315341A true JPH01315341A (en) | 1989-12-20 |
Family
ID=14456244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63107327A Pending JPH01315341A (en) | 1988-04-28 | 1988-04-28 | Oxidation catalyst and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01315341A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118133A3 (en) * | 2004-05-28 | 2006-04-27 | British American Tobacco Co | Smoking articles including gold catalyst |
| WO2012108060A1 (en) * | 2011-02-07 | 2012-08-16 | Toyota Jidosha Kabushiki Kaisha | NOx PURIFICATION CATALYST |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0194945A (en) * | 1987-05-14 | 1989-04-13 | Agency Of Ind Science & Technol | Catalyst of carrying superfine gold particles fixed on metal oxide and manufacture therefor |
-
1988
- 1988-04-28 JP JP63107327A patent/JPH01315341A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0194945A (en) * | 1987-05-14 | 1989-04-13 | Agency Of Ind Science & Technol | Catalyst of carrying superfine gold particles fixed on metal oxide and manufacture therefor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118133A3 (en) * | 2004-05-28 | 2006-04-27 | British American Tobacco Co | Smoking articles including gold catalyst |
| JP2008500827A (en) * | 2004-05-28 | 2008-01-17 | ブリティッシュ アメリカン タバコ （インヴェストメンツ） リミテッド | Smoking goods and materials |
| AU2005249764B2 (en) * | 2004-05-28 | 2009-10-22 | British American Tobacco (Investments) Limited | Smoking articles including gold catalyst |
| AU2005249764C1 (en) * | 2004-05-28 | 2010-05-27 | British American Tobacco (Investments) Limited | Smoking articles including gold catalyst |
| CN1960804B (en) | 2004-05-28 | 2011-06-29 | 英美烟草(投资)有限公司 | Smoking articles and smoking materials |
| US8104484B2 (en) | 2004-05-28 | 2012-01-31 | British American Tobacco (Investments) Limited | Smoking articles and smoking materials |
| WO2012108060A1 (en) * | 2011-02-07 | 2012-08-16 | Toyota Jidosha Kabushiki Kaisha | NOx PURIFICATION CATALYST |
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