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公开(公告)号：US5128305A
公开(公告)日：1992-07-07
申请号：US417422
申请日：1989-10-05
摘要： A denitrizing catalyst which comprises:(a) an alkali metal oxide or an alkaline earth metal oxide in amounts of 50-90% by weight as oxides;(b) at least one metal oxide selected from the group consisting of Co.sub.3 O.sub.4, Cu.sub.2 O, Cr.sub.2 O.sub.3, Mn.sub.2 O.sub.3, NiO, PbO, Bi.sub.2 O.sub.3, MoO.sub.2, Al.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2, Fe.sub.2 O.sub.3, TiO.sub.2, WO.sub.3, MoO.sub.3, SnO.sub.2 and ZnO in amounts of 5-50% by weight as oxides; and(c) at least one metal or at least one oxide of metals selected from the group consisting of Ru, Rh, Pd, Ag, Pt and Au in amounts of 0.01-10% by weight as metals.Nitrogen oxides contained in waste gases are denitrized effectively by putting the gases into contact with the catalysts in the absence or presence of carbon monoxide as a reducing agent.
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公开(公告)号：US5162287A
公开(公告)日：1992-11-10
申请号：US684122
申请日：1991-04-12
CPC分类号： F01N3/0217 , B01D53/944 , B01J35/04 , F01N3/022 , F01N3/0222 , F01N3/2807 , F01N3/2828 , F01N3/2835 , F01N3/2882 , F01N2250/02 , F01N2330/00 , F01N2330/06 , F01N2330/12 , F01N2570/04 , F02B3/06 , Y02T10/20
摘要： The present invention relates to a particulate removing catalyst filter in which an oxidizing catalyst is carried on the surface portions of an air-permeable substrate to a depth, based on the substrate and the catalyst, of up to 19% measured from the exposed surface of the catalyst through which the exhaust gas is adapted to be passed, and to a particulate removing catalyst filter in which a catalyst is carried on a thin wire net or metallic plate having a plurality of fine through-holes. The exhaust gas from a diesel engine is forcibly passed through the filter, thereby to remove particulates in the exhaust gas.
摘要翻译： 本发明涉及一种颗粒除去催化剂过滤器，其中氧化催化剂在透气性基材的表面部分上以基于基材和催化剂的深度承载高达19％，从暴露的表面 废气适合通过的催化剂，以及将催化剂载持在具有多个细通孔的细金属丝网或金属板上的除尘催化剂过滤器。 来自柴油发动机的废气被强制地通过过滤器，从而除去废气中的微粒。
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公开(公告)号：US5160586A
公开(公告)日：1992-11-03
申请号：US525597
申请日：1990-05-21
CPC分类号： C02F1/725 , B01D53/8675 , B01J35/04 , C02F1/78 , Y10S588/90
摘要： There is disclosed an ozone decomposing reactor which comprises:a catalyst structure composed of a carrier having at least one passage extending therethrough for allowing an ozone containing fluid to pass through the catalyst structure and a catalyst and an electroconductive material carried in or on the carrier; andelectrodes attached to the catalyst structure to electrify the structure, whereby to decompose ozone at elevated temperatures.The carrier is either a ceramic honeycomb mold or a fiber board.
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公开(公告)号：US5158654A
公开(公告)日：1992-10-27
申请号：US525596
申请日：1990-05-21
CPC分类号： B01D53/8675 , B01J35/0033 , B01J35/04 , C02F1/725 , C02F1/78
摘要： There is disclosed an ozone decomposing reactor which comprises:an air permeable carrier containing a catalyst and an electroconductive material therein or thereon; andelectrodes attached to the sheet to electrify and heat the sheet, whereby to decompose ozone at elevated temperatures.A fibrous sheet or a foamed material is used as the air permeable carrier.
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公开(公告)号：US5232886A
公开(公告)日：1993-08-03
申请号：US865649
申请日：1992-04-10
IPC分类号： B01D53/86 , B01J23/34 , B01J23/68 , B01J23/889
CPC分类号： B01J23/8892 , B01D53/8675 , B01J23/34 , B01J23/688
摘要： A catalyst for ozone decomposition which comprises:(a) at least one selected from the group consisting of clay and carbon;(b) manganese dioxide; and optionally(c) titanium dioxide; and/or(d) at least one oxide of a metal selected from the group consisting of Cu, Co, Fe, Ni and Ag.A further catalyst for ozone decomposition which comprises:(a) at least one oxide of a metal selected from the group consisting of alkali metals and alkaline earth metals;(b) manganese dioxide; and optionally(c) titanium dioxide; and/or(d) at least one selected from the group consisting of clay and carbon.
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公开(公告)号：US5049364A
公开(公告)日：1991-09-17
申请号：US518560
申请日：1990-06-06
摘要： A denitrizing catalyst which comprises:(a) an alkali metal oxide or an alkaline earth metal oxide in amounts of 50-90% by weight as oxides;(b) at least one metal oxide selected from the group consisting of Co.sub.3 O.sub.4, Cu.sub.2 O, Cr.sub.2 O.sub.3, Mn.sub.2 O.sub.3, NiO, PbO, Bi.sub.2 O.sub.3, MoO.sub.2, Al.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2, Fe.sub.2 O.sub.3, TiO.sub.2, WO.sub.3, MoO.sub.3, SnO.sub.2 and ZnO in amounts of 5-50% by weight as oxides; and(c) at least one metal or at least one oxide of metals selected from the group consisting of Ru, Rh, Pd, Ag, Pt and Au in amounts of 0.01-10% by weight as metals.Nitrogen oxides contained in waste gases are denitrized effectively by putting the gases into contact with the catalysts in the absence or presence of carbon monoxide as a reducing agent.
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公开(公告)号：US5011674A
公开(公告)日：1991-04-30
申请号：US438001
申请日：1989-11-20
IPC分类号： C01G23/053
CPC分类号： C01G23/053 , C01G23/0536 , C01P2006/12
摘要： There is provided a method of producing titanium-oxides which comprises: admixing an aqueous solution of titanium tetrachloride with sulfuric acid in amounts of at least 0.5 times is moles as the titanium tetrachloride; adding an alkali to the resultant solution to produce titanium hydroxide; and drying and calcining the titanium hydroxide. A further method is provided which comprises: adding a solution of an alkali to an aqueous solution of titanium tetrachloride having a concentration of not more than 2.5 moles/l at temperatures of not less than 50.degree. C., thereby to substantially thermally hydrolyze the titanium tetrachloride and to produce titanium hydroxide; and drying and calcining the titanium hydroxide.
摘要翻译： 提供一种生产钛氧化物的方法，其包括：四氯化钛水溶液与硫酸的混合量为摩尔数的至少0.5倍作为四氯化钛; 向所得溶液中加入碱以制备氢氧化钛; 并干燥并煅烧氢氧化钛。 提供了另外的方法，其包括：在不低于50℃的温度下，将碱溶液加入浓度不超过2.5摩尔/升的四氯化钛水溶液中，从而基本上使水解钛 四氯化钛并生成氢氧化钛; 并干燥并煅烧氢氧化钛。
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公开(公告)号：US5212140A
公开(公告)日：1993-05-18
申请号：US747062
申请日：1991-08-19
CPC分类号： B01J23/34 , B01D53/8675 , B01J35/04
摘要： A catalyst for decomposing ozone comprising a carrier and a catalytic active substance having ozone resolvability carried thereon in a thickness of 10 to 200 .mu.m. Consequently, ozone can efficiently be removed. The invention also includes the catalytic active substance or ozone adsorption substance which is contained in the carrier, such that the combination of the carrier and its contained material has ozone resolvability or ozone adsorbing ability in itself. Accordingly, the combination of these two features allows the thickness of the catalytic active substance carried on a carrier surface to be reduced to the range from 5 to 100 .mu.m. Thus, improved productivity, durability of the catalyst and ozone removing efficiency are provided.
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公开(公告)号：US5002920A
公开(公告)日：1991-03-26
申请号：US429224
申请日：1989-10-31
IPC分类号： B01D53/86 , B01J21/06 , B01J23/34 , B01J23/68 , B01J23/72 , B01J23/74 , B01J23/84 , B01J23/889 , B01J23/89
CPC分类号： B01D53/8675 , B01J23/688 , B01J23/8892
摘要： A catalyst for ozone decomposition which comprises: at least one oxide of a metal selected from the group consisting of Cu, Mn, Co, Fe and Ni; and at least one oxide of a metal selected from the group consisting of Ti and Ag, and/or Au.A further catalyst freed from deterioration in activity even when it is used under severe conditions, which comprises: a ternary metal oxide represented by the formula of xMnO.sub.z.yAg.sub.z O.zTiO.sub.z wherein weight proportion coordinates (x, y, z) of the oxide on a triangular diagram are either on sides of a triangle formed by connecting three points (20, 10, 70), (80, 10, 10) and (20, 70, 10) with straight lines or within the traingle, as seen in FIG. 1.
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公开(公告)号：US5232882A
公开(公告)日：1993-08-03
申请号：US827388
申请日：1992-01-29
CPC分类号： B01D53/8675 , B01J35/04 , C02F1/725 , C02F1/78
摘要： Regeneration of an ozone decomposing reactor which comprises:a catalyst structure composed of a carrier having at least one passage extending therethrough for allowing an ozone containing fluid to pass through the catalyst structure and a catalyst and an electroconductive material carried in or on the carrier; andelectrodes attached to the catalyst structure to electrify the structure, whereby to decompose ozone at elevated temperatures and regenerating deactivated structure by electrifying and heating.The carrier is either a ceramic honeycomb mold or a fiber board.
摘要翻译： 一种臭氧分解反应器的再生，其特征在于，包括：催化剂结构，该催化剂结构由具有至少一个通过其延伸的通道的载体构成，以允许含臭氧的流体通过催化剂结构，以及载体上载有催化剂和导电材料; 以及连接到催化剂结构上的电极以使结构带电，由此在升高的温度下分解臭氧并通过通电和加热再生失活的结构。 载体是陶瓷蜂窝模或纤维板。
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