JP2000218164A - Active carbon catalyst and gas treatment process using the catalyst - Google Patents
Active carbon catalyst and gas treatment process using the catalystInfo
- Publication number
- JP2000218164A JP2000218164A JP1960099A JP1960099A JP2000218164A JP 2000218164 A JP2000218164 A JP 2000218164A JP 1960099 A JP1960099 A JP 1960099A JP 1960099 A JP1960099 A JP 1960099A JP 2000218164 A JP2000218164 A JP 2000218164A
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- Prior art keywords
- catalyst
- compound
- activated carbon
- platinum group
- gas
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Abstract
Description
【０００１】[0001]
【発明の分野】本発明は、ガス中の有害成分を効率よく
酸化除去する活性炭触媒及びこれを用いたガス処理法に
関する。さらに具体的には、本発明は白金族金属又は化
合物と、リン化合物および／または重金属化合物とを担
持した活性炭触媒を用い、ガス中の一酸化炭素、アルデ
ヒドなどの被酸化性の有害な成分を酸化し無害化する。The present invention relates to an activated carbon catalyst for efficiently oxidizing and removing harmful components in a gas, and a gas treatment method using the same. More specifically, the present invention uses an activated carbon catalyst supporting a platinum group metal or compound and a phosphorus compound and / or heavy metal compound to remove oxidizable harmful components such as carbon monoxide and aldehyde in a gas. Oxidizes and renders harmless.
【０００２】[0002]
【従来技術】一酸化炭素やアルデヒドなどは、たばこの
煙、自動車排ガス、ストーブ排ガスなどに含まれていて
人体に有害な作用を及ぼす。また、硫化水素、メルカプ
タン類、スルフィド類などのイオウ化合物は悪臭ガスで
あり、エチレンは青果物を追熟あるいは老化させるガス
として有害である。従来、ガス中の一酸化炭素、エチレ
ンを除去する方法としては、白金族化合物を含有する活
性炭触媒を用いることが提案されている(特開昭55-1370
39号、特開昭58-119338号、特開昭61-68139号、特開昭6
4-80248号、特公昭61-25340号など)。しかしながら、こ
れらの触媒は除去速度が小さく、除去速度の低下率が大
きいほか、比較的低温度で発熱、発火するなどの欠点を
有する。2. Description of the Related Art Carbon monoxide and aldehydes are contained in tobacco smoke, automobile exhaust gas, stove exhaust gas and the like, and have harmful effects on the human body. In addition, sulfur compounds such as hydrogen sulfide, mercaptans, and sulfides are malodorous gases, and ethylene is harmful as a gas for ripening or aging fruits and vegetables. Conventionally, as a method for removing carbon monoxide and ethylene in a gas, it has been proposed to use an activated carbon catalyst containing a platinum group compound (JP-A-55-1370).
No. 39, JP-A-58-119338, JP-A-61-68139, JP-A-6
4-80248, JP-B61-25340). However, these catalysts have disadvantages such as a low removal rate, a large reduction rate of the removal rate, and generation of heat and ignition at a relatively low temperature.
【０００３】[0003]
【発明の目的及び概要】本発明の目的は、ガス中の被酸
化性成分の除去速度に優れ、温度や湿度の影響が少な
く、かつ触媒寿命が長く、発熱、発火の危険のない触媒
を提供することにある。本発明者らは、このような課題
を解決すべく種々検討した結果、白金族金属に加えて、
リン化合物および／または重金属化合物を担持する活性
炭触媒を用いることによって、ガス中の被酸化性成分を
常温付近で効率よく酸化できるとの知見を得て本発明を
完成した。すなわち、本発明は、白金族金属又はその化
合物、並びにリン化合物および／または重金属化合物を
担持してなる活性炭触媒を提供するものである。また、
本発明はこの触媒に、被酸化性成分を含有するガスを接
触させることを特徴とするガス処理方法を提供するもの
である。SUMMARY OF THE INVENTION An object of the present invention is to provide a catalyst which is excellent in the removal rate of oxidizable components in a gas, has little influence of temperature and humidity, has a long catalyst life, and has no danger of heat generation or ignition. Is to do. The present inventors have conducted various studies to solve such problems, and in addition to the platinum group metals,
The inventors have found that the use of an activated carbon catalyst supporting a phosphorus compound and / or a heavy metal compound enables the oxidizable components in the gas to be efficiently oxidized at around normal temperature, and completed the present invention. That is, the present invention provides an activated carbon catalyst supporting a platinum group metal or a compound thereof, and a phosphorus compound and / or a heavy metal compound. Also,
The present invention provides a gas treatment method characterized by bringing a gas containing an oxidizable component into contact with the catalyst.
【０００４】（活性炭）本発明にて用いられる活性炭は
比表面積200〜3000ｍ２／gであるのが好ましい。活性炭
の形伏は、粒伏、破砕状、マカロニ状、ハニカム状、繊
維状など種々の形状のものをいずれも用いることができ
る。これらのうち、低圧力損失で高接触効率が得られる
ハニカム状活性炭が特に好ましい。活性炭の原料は従来
公知の種々のものが用いられてよく、木質系、石炭系、
樹脂系などのいずれの活性炭も採用し得る。ハニカム状
活性炭のセル数は、約10〜1500個／inch２、好ましくは
約20〜1000個／inch２、さらに好ましくは約25〜750個
／inch２程度である。これら活性炭は公知の方法で製造
することができる。ハニカム状活性炭の場合には、例え
ば活性炭原料にバインダーを加えハニカム状に成型し、
炭化・賦活し、必要に応じて酸洗浄するか、活性炭にバ
インダーを加えハニカム状に成型し、必要に応じて乾燥
または／および焼成することによって得られる。(Activated carbon) The activated carbon used in the present invention preferably has a specific surface area of 200 to 3000 m 2 / g. As the shape of the activated carbon, any of various shapes such as grain shape, crushed shape, macaroni shape, honeycomb shape, and fibrous shape can be used. Among them, honeycomb-shaped activated carbon which can obtain high contact efficiency with low pressure loss is particularly preferable. As the raw material of the activated carbon, conventionally known various materials may be used, and wood-based, coal-based,
Any activated carbon, such as resin-based, can be employed. The number of cells of the honeycomb activated carbon is about 10 to 1500 cells / inch 2 , preferably about 20 to 1000 cells / inch 2 , and more preferably about 25 to 750 cells / inch 2 . These activated carbons can be manufactured by a known method. In the case of honeycomb activated carbon, for example, a binder is added to an activated carbon raw material and molded into a honeycomb shape,
It is obtained by carbonizing and activating, washing with acid as needed, or adding a binder to activated carbon, forming a honeycomb shape, and drying and / or firing as needed.
【０００５】（触媒）本発明にて用いられる触媒金属の
第１成分は、白金族金属又はその化合物である。白金族
金属としては、例えば、白金、イリジウム、オスミウ
ム、パラジウム、ロジウム、ルテニウム、金が挙げられ
る。また、白金族金属の化合物としては、塩化物、硝酸
塩、硫酸塩などが挙げられる。これらは単独で用いても
よく混合してもよい。リン化合物としては、例えば、リ
ン酸、次リン酸、亜リン酸、次亜リン酸などが挙げら
れ、単独、又は混合して用いられる。さらに、重金属化
合物としては、例えば、Ｔi、Ｃr、Ｍn、Ｆe、Ｃo、Ｎ
i、Ｃu、Ａgなどの化合物が挙げられ、特にＣu、Ｃr、
Ｍnが好ましい。重金属の化合物としては、例えば塩化
物、硝酸塩、硫酸塩、アンモニウム塩、酸化物などが挙
げられ、これらは混合して用いてもよい。前記白金族金
属及びその化合物は、リン化合物、あるいは重金属化合
物のいずれかと組み合わせてもよく、またより好ましく
は、その両者を併用して白金族金属と組み合わせてもよ
い。白金族金属又はその化合物に、重金属化合物を組み
合わせた触媒を活性炭に担持した場合は、酸化触媒活性
が向上し、使用による劣化が少ない点に特徴がある。ま
た、白金族金属及びその化合物にリン化合物を組み合わ
せた場合は、発火点が高くなり、耐熱性、安全性に優れ
る。(Catalyst) The first component of the catalyst metal used in the present invention is a platinum group metal or a compound thereof. Examples of the platinum group metal include platinum, iridium, osmium, palladium, rhodium, ruthenium, and gold. Examples of the platinum group metal compound include chlorides, nitrates, and sulfates. These may be used alone or may be mixed. Examples of the phosphorus compound include phosphoric acid, hypophosphoric acid, phosphorous acid, hypophosphorous acid and the like, and these are used alone or in combination. Further, as the heavy metal compound, for example, Ti, Cr, Mn, Fe, Co, N
Compounds such as i, Cu, Ag and the like are mentioned, in particular, Cu, Cr,
Mn is preferred. Examples of heavy metal compounds include chlorides, nitrates, sulfates, ammonium salts, oxides, and the like, and these may be used as a mixture. The platinum group metal and its compound may be combined with either a phosphorus compound or a heavy metal compound, or more preferably, may be combined with a platinum group metal using both of them. When a catalyst in which a heavy metal compound is combined with a platinum group metal or a compound thereof is supported on activated carbon, the oxidation catalyst activity is improved, and there is little deterioration due to use. In addition, when a phosphorus compound is combined with the platinum group metal and its compound, the ignition point is increased, and the heat resistance and safety are excellent.
【０００６】これらの触媒成分を用いて本発明の活性炭
触媒を製造するには、例えば前記の白金属金属又はその
化合物を、塩酸、硝酸などの鉱酸水溶液に溶解し、さら
にリン化合物および／または重金属化合物を加えて触媒
液を調製する。溶液中の白金属金属又は白金族化合物の
濃度は、金属として０.１〜２００ｇ／Ｌ、好ましくは
１〜５０ｇ／Ｌである。また、溶液中のリン化合物の濃
度は、リンとして０.１〜１００ｇ／Ｌ、好ましくは１
〜５０ｇ／Ｌである。溶液中の重金属化合物の濃度は、
金属として０.１〜３００ｇ／Ｌ、好ましくは１〜１０
０ｇ／Ｌである。In order to produce the activated carbon catalyst of the present invention by using these catalyst components, for example, the above-mentioned white metal or its compound is dissolved in an aqueous solution of a mineral acid such as hydrochloric acid or nitric acid, and then the phosphorus compound and / or A heavy metal compound is added to prepare a catalyst solution. The concentration of the white metal or platinum group compound in the solution is 0.1 to 200 g / L, preferably 1 to 50 g / L, as the metal. The concentration of the phosphorus compound in the solution is 0.1 to 100 g / L as phosphorus, preferably 1 to 100 g / L.
５０50 g / L. The concentration of the heavy metal compound in the solution is
0.1 to 300 g / L, preferably 1 to 10 as metal
0 g / L.
【０００７】つぎに、かかる触媒調製液に、活性炭を浸
漬した後、取り出し、乾燥または／および焼成を行う。
また、別法として、前記の触媒調製液を活性炭に噴霧、
散布した後、乾燥または／および焼成して製造してもよ
い。乾燥は７０〜２００℃、１〜１０時間、空気中又は
窒素燃焼ガスなどの不活性ガス中で行うのが望ましい
(散布吸収法)。Next, after immersing the activated carbon in the catalyst preparation liquid, the activated carbon is taken out, dried and / or calcined.
Also, as an alternative, spraying the catalyst preparation liquid on activated carbon,
After spraying, it may be produced by drying or / and baking. Drying is preferably performed at 70 to 200 ° C. for 1 to 10 hours in air or an inert gas such as nitrogen combustion gas.
(Spray absorption method).
【０００８】このようにして得られた活性炭触媒におい
て、白金族金属又はその化合物の担持量は、活性炭に対
し金属単体として０.０１〜２０重量％、好ましくは０.
０１〜１０重量％である。また、リン化合物の担持量
は、活性炭に対してリン元素として０.１〜１０重量
％、好ましくは０.２〜５重量％である。重金属化合物
の担持量は、活性炭に対して金属として０.１〜３０重
量％、好ましくは０.１〜１０重量％である。これら触
媒の担持量が前記範囲より少ないと充分な触媒の効果が
得られず、この範囲より多くても効果の増大はない。In the activated carbon catalyst thus obtained, the amount of the platinum group metal or a compound thereof is 0.01 to 20% by weight, preferably 0.1 to 20% by weight of the activated carbon.
01 to 10% by weight. The amount of the phosphorus compound supported is 0.1 to 10% by weight, preferably 0.2 to 5% by weight, as a phosphorus element, based on activated carbon. The supported amount of the heavy metal compound is 0.1 to 30% by weight, preferably 0.1 to 10% by weight as a metal based on activated carbon. If the supported amount of these catalysts is less than the above range, a sufficient effect of the catalyst cannot be obtained, and if it is more than this range, the effect does not increase.
【０００９】このような活性炭触媒により、一酸化炭
素、窒素酸化物、イオウ化合物、アルデヒド類、エチレ
ンなどの有害な被酸化性成分を含有するガスを処理し
て、効率的な無害化を行う。ガスの処理を行うにあた
り、被酸化性成分含有ガスと活性炭触媒との接触は、温
度−５〜２００℃、好ましくは０〜１５０℃にて行う。
接触温度がこれより低いと、有害ガスの充分な除去がで
きず、一方、これより温度が高いと触媒層の酸化が起こ
り、着火を招く恐れがある。活性炭触媒層に対するガス
の線流速は、１〜５００ｃｍ／sec 程度が好ましく、ガ
ス空間速度は1,000〜500,000／h 程度であるのが好まし
い。これらの値が上記範囲より小さいとガスの処理量が
少なすぎて実用的ではなく、また、この範囲を越えると
有害ガスを充分に除去することができない。なお、ハニ
カム状活性炭触媒は高接触効率であり、ガス線流速１０
〜５００cｍ／sec、ガス空間速度3,600〜500,000／ｈの
ように大きくとれ好ましい。With such an activated carbon catalyst, a gas containing harmful oxidizable components such as carbon monoxide, nitrogen oxides, sulfur compounds, aldehydes, and ethylene is treated to efficiently detoxify the gas. In performing the gas treatment, the contact between the oxidizable component-containing gas and the activated carbon catalyst is performed at a temperature of -5 to 200C, preferably 0 to 150C.
If the contact temperature is lower than this, the harmful gas cannot be sufficiently removed, while if the contact temperature is higher than this, oxidation of the catalyst layer occurs, which may cause ignition. The gas linear velocity with respect to the activated carbon catalyst layer is preferably about 1 to 500 cm / sec, and the gas space velocity is preferably about 1,000 to 500,000 / h. If these values are smaller than the above ranges, the gas throughput is too small to be practical, and if it exceeds this range, harmful gases cannot be sufficiently removed. The honeycomb activated carbon catalyst has a high contact efficiency and a gas line flow rate of 10
５００500 cm / sec and gas space velocity of 3,600-500,000 / h are preferable.
【００１０】[0010]
【実施例】つぎに本発明を実施例、比較例によりさらに
具体的に説明する。Next, the present invention will be described more specifically with reference to examples and comparative examples.
【００１１】［実施例１］塩化パラジウム３.５ｇ及び
硝酸銅６水塩１４.８ｇ、リン酸１.１ｇを硝酸水溶液
(４％)１００ｍＬに溶解し、この水溶液２０ｍＬを８〜
２４ｍeshの活性炭(ＢＥＴ比表面積1040ｍ２／g)２０ｇ
に散布した。これを大気中、１１０℃にて乾燥し、活性
炭に対してＰd−２０ｍg／g、Ｃｕ−３０ｍg／g、Ｈ３
ＰＯ４−１０ｍg／gを担持した活性炭触媒(本発明触媒
Ａ)を調製した。また、触媒成分として塩化パラジウム
単独を用いた以外は前記触媒Ａと同様に処理して、活性
炭に対しＰｄ−２０ｍg／gを担持した活性炭触媒(比較
触媒Ｂ)を調製した。これらの活性炭触媒Ａ及びＢをカ
ラム(２７ｍｍφ)にそれぞれ１１ｍＬ充填して、一酸化
炭素２００ppｍ含有の大気(２５℃、相対湿度７０％)を
１３００ｍＬ／minにて導入し、カラム出入口のガスを
ガスクロマトグラフィにて経時的に分析した。一酸化炭
素の除去率を表１に示す。[Example 1] 3.5 g of palladium chloride, 14.8 g of copper nitrate hexahydrate, and 1.1 g of phosphoric acid were added to an aqueous nitric acid solution.
(4%) dissolved in 100 mL, and 20 mL of this aqueous solution was
24mesh of activated carbon (BET specific surface area of 1040m 2 / g) 20g
Sprayed. This was dried in air at 110 ° C., and Pd-20 mg / g, Cu-30 mg / g, H 3 with respect to activated carbon.
An activated carbon catalyst (catalyst A of the present invention) supporting PO 4 -10 mg / g was prepared. An activated carbon catalyst carrying Pd-20 mg / g with respect to activated carbon (Comparative Catalyst B) was prepared in the same manner as in Catalyst A except that palladium chloride alone was used as a catalyst component. 11 mL of each of these activated carbon catalysts A and B was packed into a column (27 mmφ), and air (25 ° C., 70% relative humidity) containing 200 ppm of carbon monoxide was introduced at 1300 mL / min, and the gas at the inlet and outlet of the column was gaseous. It was analyzed over time by chromatography. Table 1 shows the removal rates of carbon monoxide.
【００１２】 ［表１］ 一酸化炭素除去率の経時変化(％) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 経過時間(時間) １ 100 200 300 400 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Ａ(本発明) 82 84 80 78 76 Ｂ(対照) 53 40 32 26 11 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━[Table 1] Change with time of carbon monoxide removal rate (%) 経 過 Elapsed time (time ) 1 100 200 300 400 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ A (invention) 82 84 80 78 76 B (control) 53 40 32 26 11 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━
【００１３】［実施例２］塩化パラジウム３.５ｇ、硝
酸銅６水塩１４.８ｇ、リン酸１.１ｇを硝酸水溶液(４
％)１００ｍＬに溶解し、この溶液の所定量をハニカム
状活性炭(ＢＥＴ比表面積８１０ｍ２／g、セル数３００
個／inch２、サイズ２７ｍｍφ、厚さ２０ｍｍ)に均一
に散布した。ハニカム状活性炭に対して、Ｐd−２０ｍg
／g、Ｃu−３０ｍg／g、ＨＮＯ３−４０ｍg／g、Ｈ３Ｐ
Ｏ４−１０ｍg／gを添着して、空気中にて１４０℃で５
時間乾燥した。乾燥工程中、ＨＮＯ３の大部分は分解し
ながらハニカム状活性炭から脱離し、触媒Ｃを得た。ま
た、塩化パラジウム３.５ｇを４％硝酸水溶液１００ｍ
Ｌに溶解した触媒調製液を用いた以外は、前記と同様に
処理して、Ｐd−２０ｍg／g、ＨＮＯ３−４０ｍg／gを
添着し、乾燥して比較触媒Ｄを得た。これら触媒につい
て、ＪＩＳ−1474の方法で発火点を測定し、その結果を
表２に示した。また、これらの触媒を２７ｍｍφのカラ
ムに積層し、実施例１と同様の条件で一酸化炭素の除去
テストを行い、一酸化炭素の除去率の経時変化を表２に
示した。Example 2 3.5 g of palladium chloride, 14.8 g of copper nitrate hexahydrate and 1.1 g of phosphoric acid were added to an aqueous nitric acid solution (4
%), And a predetermined amount of this solution was added to a honeycomb-shaped activated carbon (BET specific surface area: 810 m 2 / g, cell number: 300).
Pieces / inch 2 , size 27 mmφ, thickness 20 mm). For honeycomb activated carbon, Pd-20mg
/ G, Cu-30mg / g , HNO 3 -40mg / g, H 3 P
O 4 -10 mg / g was impregnated with the mixture at 140 ° C. in air for 5 minutes.
Dried for hours. During the drying step, most of the HNO 3 was decomposed and desorbed from the honeycomb-shaped activated carbon to obtain catalyst C. Further, 3.5 g of palladium chloride was added to 100 m of a 4% nitric acid aqueous solution.
The same treatment as above was carried out except that the catalyst preparation liquid dissolved in L was used, Pd-20 mg / g and HNO 3 -40 mg / g were impregnated, and dried to obtain Comparative Catalyst D. The ignition points of these catalysts were measured according to the method of JIS-1474, and the results are shown in Table 2. Further, these catalysts were stacked on a 27 mmφ column, and a test for removing carbon monoxide was performed under the same conditions as in Example 1. Table 2 shows the change over time in the removal rate of carbon monoxide.
【００１４】 ［表２］ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 触媒 発火点 一酸化炭素除去率の経時変化(％) (℃) １Ｈ ｌ００Ｈ ２００Ｈ ６００Ｈ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Ｃ ６００以上 ７０ ７２ ６９ ６５ Ｄ ２５０ ６８ ５８ ４４ ２９ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━[Table 2] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Catalyst ignition point Change with time of carbon monoxide removal rate (%) ( ℃) 1H 100H 200H 600H ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ C 600 or more 70 72 69 65 D 250 68 58 44 29 ━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━
【００１５】［実施例３］塩化パラジウム４.４ｇ及び
硝酸銅６水塩１２.４ｇ、リン酸１.１ｇを硝酸水溶液
(硝酸４％)１００ｍＬに溶解した。この触媒調製液をハ
ニカム状活性炭(ＢＥＴ比表面積９００ｍ２／g、セル数
３００個／inch２、サイズ１０ｍｍφ、厚さ２０ｍｍ)
に均一に散布した。この結果、ハニカム状活性炭に対し
て、Ｐd−２５ｍg／g、Ｃu−２５ｍg／g、ＨＮＯ３−４
０ｍg／g、Ｈ３ＰＯ４−１０ｍｇ／gを添着し、１５０
℃で乾燥して触媒(触媒Ｅ)を得た。乾燥工程中、ＨＮＯ
３の対部分は分解しながらハニカム状活性炭より脱離し
た。この触媒Ｅを５個調製し、内４個を１０ｍｍφのカ
ラム４本にそれぞれ１個ずつ積層した。これらのカラム
に２１０ppｍの一酸化炭素含有大気(２５℃、相対湿度
７５％)を線流速１０、２０、４０及び６０cｍ／secに
て流通させ、各カラムの出入口ガス中の一酸化炭素濃度
を経時的に測定した。一酸化炭素の除去率の変化を表３
に示した。Example 3 4.4 g of palladium chloride, 12.4 g of copper nitrate hexahydrate and 1.1 g of phosphoric acid were added to an aqueous nitric acid solution.
(Nitric acid 4%) was dissolved in 100 mL. This catalyst preparation solution was treated with a honeycomb activated carbon (BET specific surface area: 900 m 2 / g, number of cells: 300 cells / inch 2 , size: 10 mmφ, thickness: 20 mm)
Sprayed evenly. As a result, Pd-25 mg / g, Cu-25 mg / g, HNO 3 -4 with respect to the honeycomb activated carbon.
0 mg / g, H 3 PO 4 -10 mg / g, 150
Drying at ℃ yielded a catalyst (catalyst E). During the drying process, HNO
The pair of No. 3 desorbed from the honeycomb activated carbon while decomposing. Five catalysts E were prepared, and four of them were stacked on four columns of 10 mmφ one by one. 210 ppm of carbon monoxide-containing atmosphere (25 ° C., 75% relative humidity) was passed through these columns at linear flow rates of 10, 20, 40 and 60 cm / sec. Was measured. Table 3 shows the change in the removal rate of carbon monoxide.
It was shown to.
【００１６】 ［表３］ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 線流速 一酸化炭素除去率の経時変化(％) (cｍ／s) １日 ４日 ７日 １１日 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ １０ ５７ ６０ ６０ ６０ ２０ ５６ ５７ ５８ ５６ ４０ ４８ ５０ ４３ ４５ ６０ ４０ ４３ ４３ ４０ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 上記表１〜３より明らかなように、白金族化合物に加え
て重金属及びリン化合物を添着した触媒は、触媒の劣化
が少なく発火点も高い。[Table 3] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Linear flow rate Change with time of carbon monoxide removal rate (%) (cm / S) 1 day 4 days 7 days 11 days １０ 10 57 60 60 60 20 56 57 57 58 56 40 48 50 43 45 45 60 40 43 43 40 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ As is clear from Tables 1 to 3, the platinum group A catalyst impregnated with a heavy metal and a phosphorus compound in addition to the compound has less deterioration of the catalyst and a higher ignition point.
【００１７】[0017]
【発明の効果】本発明の活性炭触媒は、ガス中の被酸化
性成分の除去速度が大きい。また、温度や湿度に影響さ
れることなく、触媒寿命に優れ、発熱、発火の危険がな
い。The activated carbon catalyst of the present invention has a high removal rate of oxidizable components in gas. Further, the catalyst life is excellent without being affected by temperature and humidity, and there is no danger of heat generation and ignition.
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Claims (4)
物および重金属化合物とを担持してなる活性炭触媒。An activated carbon catalyst comprising a platinum group metal or a compound thereof, a phosphorus compound and a heavy metal compound.
の活性炭触媒。2. The activated carbon catalyst is in the form of a honeycomb.
Activated carbon catalyst.
物および重金属化合物とを担持した活性炭触媒を設け、
該触媒に被酸化性成分を含有するガスを接触させること
を特徴とするガス処理方法。3. An activated carbon catalyst supporting a platinum group metal or a compound thereof, a phosphorus compound and a heavy metal compound,
A gas treatment method comprising bringing a gas containing an oxidizable component into contact with the catalyst.
物、イオウ化合物、アルデヒド類及びエチレンから選ば
れた少なくとも１種の成分である請求項３のガス処理
法。4. The gas treatment method according to claim 3, wherein the oxidizable component is at least one component selected from carbon monoxide, nitrogen oxides, sulfur compounds, aldehydes and ethylene.
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|---|---|---|---|
| JP1960099A JP2000218164A (en) | 1999-01-28 | 1999-01-28 | Active carbon catalyst and gas treatment process using the catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1960099A JP2000218164A (en) | 1999-01-28 | 1999-01-28 | Active carbon catalyst and gas treatment process using the catalyst |
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| Publication Number | Publication Date |
|---|---|
| JP2000218164A true JP2000218164A (en) | 2000-08-08 |
Family
ID=12003722
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100469258B1 (en) * | 2002-05-24 | 2005-02-02 | 엘지전자 주식회사 | Apparatus and method for generating thumbnail image |
| KR100490665B1 (en) * | 2000-11-06 | 2005-05-19 | (주)퓨리테크 | Manufacturing method of oxidation catalysts for elimination of the ethylene gas |
| JP2006167645A (en) * | 2004-12-17 | 2006-06-29 | Daikin Ind Ltd | Carbon monoxide decomposition catalyst, carbon monoxide decomposition filter using the same, air cleaning apparatus using carbon monoxide decomposition filter, air conditioner and production method of carbon monoxide decomposition catalyst |
| US7998898B2 (en) | 2007-10-26 | 2011-08-16 | Corning Incorporated | Sorbent comprising activated carbon, process for making same and use thereof |
| US8691722B2 (en) | 2008-07-03 | 2014-04-08 | Corning Incorporated | Sorbent comprising activated carbon particles, sulfur and metal catalyst |
-
1999
- 1999-01-28 JP JP1960099A patent/JP2000218164A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100490665B1 (en) * | 2000-11-06 | 2005-05-19 | (주)퓨리테크 | Manufacturing method of oxidation catalysts for elimination of the ethylene gas |
| KR100469258B1 (en) * | 2002-05-24 | 2005-02-02 | 엘지전자 주식회사 | Apparatus and method for generating thumbnail image |
| JP2006167645A (en) * | 2004-12-17 | 2006-06-29 | Daikin Ind Ltd | Carbon monoxide decomposition catalyst, carbon monoxide decomposition filter using the same, air cleaning apparatus using carbon monoxide decomposition filter, air conditioner and production method of carbon monoxide decomposition catalyst |
| US7998898B2 (en) | 2007-10-26 | 2011-08-16 | Corning Incorporated | Sorbent comprising activated carbon, process for making same and use thereof |
| US8691722B2 (en) | 2008-07-03 | 2014-04-08 | Corning Incorporated | Sorbent comprising activated carbon particles, sulfur and metal catalyst |
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