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公开(公告)号:US5474965A
公开(公告)日:1995-12-12
申请号:US165654
申请日:1993-12-13
申请人: Tadao Nakatsuji , Hiromitsu Shimizu , Ritsu Yasukawa , Masaaki Kawatsuki , Mitsunori Tabata , Hiroshi Tsuchida , Yoshiaki Kintaichi , Motoi Sasaki
发明人: Tadao Nakatsuji , Hiromitsu Shimizu , Ritsu Yasukawa , Masaaki Kawatsuki , Mitsunori Tabata , Hiroshi Tsuchida , Yoshiaki Kintaichi , Motoi Sasaki
CPC分类号: B01J23/66 , B01D53/9418 , B01J23/52 , B01D2251/208 , B01D2255/1021 , B01D2255/1025 , B01D2255/1026 , B01D2255/1028 , B01D2255/106 , B01D2255/2063 , B01D2255/2065 , B01D2255/2068
摘要: A novel catalyst for catalytic reduction of nitrogen oxide using a hydrocarbon as a reducing agent is provided, which comprises (a) at least an element of the platinum group selected from the group consisting of platinum, iridium, rhodium and ruthenium and (b) gold, and which may further comprises (c) at least a metallic oxide selected from the group consisting of cerium oxide, lanthanum oxide, neodymium oxide, germanium oxide and gallium oxide.
摘要翻译: 提供了一种使用烃作为还原剂催化还原氮氧化物的新催化剂,其包括(a)至少一种选自铂,铱,铑和钌的铂族元素和(b)金 并且其还可以包含(c)至少一种选自氧化铈,氧化镧,氧化钕,氧化锗和氧化镓中的金属氧化物。
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公开(公告)号:US5853679A
公开(公告)日:1998-12-29
申请号:US733697
申请日:1996-10-17
申请人: Mitsunori Tabata , Masaaki Kawatsuki , Katsumi Miyamoto , Hiroshi Tsuchida , Tomohiro Yoshinari , Kazushi Usui , Fujio Suganuma , Tadao Nakatsuji , Hiromitsu Shimizu , Ritsu Yasukawa , Hideaki Hamada , Takehiko Ito , Yoshiaki Kintaichi , Motoi Sasaki
发明人: Mitsunori Tabata , Masaaki Kawatsuki , Katsumi Miyamoto , Hiroshi Tsuchida , Tomohiro Yoshinari , Kazushi Usui , Fujio Suganuma , Tadao Nakatsuji , Hiromitsu Shimizu , Ritsu Yasukawa , Hideaki Hamada , Takehiko Ito , Yoshiaki Kintaichi , Motoi Sasaki
CPC分类号: B01D53/8628 , B01D53/9418 , B01J23/02 , B01J35/10 , B01D2251/208 , B01D2251/21 , B01D2255/202 , B01D2255/204 , B01D2258/012 , B01J35/1038 , B01J35/1042 , B01J35/1061 , B01J35/1085 , F02B2075/027 , F02B3/06
摘要: A process for removing nitrogen oxide from exhaust is disclosed, comprising contacting exhaust containing nitrogen oxide with an alumina catalyst which contains not more than 0.5% by weight of an alkali metal and/or an alkaline earth metal and has a total pore volume of from 0.48 to 1.2 cm.sup.3 .multidot.g.sup.-1 with 0.26 to 0.6 cm.sup.3 .multidot.g.sup.-1 of the total pore volume being formed of pores of not greater than 80 .ANG. or has a volume of pores formed of pores of not greater than 60 .ANG. of from 0.06 to 0.2 cm.sup.3 .multidot.g.sup.-l and which may have supported thereon tin in an oxidative atmosphere containing excess oxygen in the presence of a hydrocarbon or an oxygen-containing organic compound.
摘要翻译: 公开了一种从排气中除去氮氧化物的方法,包括使含氮氧化物的废气与氧化铝催化剂接触,氧化铝催化剂含有不超过0.5重量%的碱金属和/或碱土金属,总孔体积为0.48 至1.2cm 3×g -1,其总孔体积的0.26至0.6cm 3×g -1由不大于80的孔形成,或具有由不大于60的孔形成的孔的体积为0.06至0.2cm 3×g -1 并且其可以在烃或含氧有机化合物的存在下,在含有过量氧的氧化气氛中负载锡。
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公开(公告)号:US5380692A
公开(公告)日:1995-01-10
申请号:US944106
申请日:1992-09-11
申请人: Tadao Nakatsuji , Hiromitsu Shimizu , Ritsu Yasukawa , Fujio Suganuma , Akihiro Kitazume , Hiroshi Tsuchida , Takehiko Ito , Hideaki Hamada , Katsumi Miyamoto , Masaaki Kawatsuki , Yoshiaki Kintaichi , Motoi Sasaki , Mitsunori Tabata
发明人: Tadao Nakatsuji , Hiromitsu Shimizu , Ritsu Yasukawa , Fujio Suganuma , Akihiro Kitazume , Hiroshi Tsuchida , Takehiko Ito , Hideaki Hamada , Katsumi Miyamoto , Masaaki Kawatsuki , Yoshiaki Kintaichi , Motoi Sasaki , Mitsunori Tabata
IPC分类号: B01D53/94 , B01J23/00 , B01J23/78 , B01J23/83 , B01J23/89 , B01J21/04 , B01J21/06 , B01J21/12 , B01J23/58 , B01J23/60 , B01J23/66 , B01J23/76 , B01J35/02
CPC分类号: B01J23/8933 , B01D53/9418 , B01J23/002 , B01J23/78 , B01J23/83 , B01D2251/208 , B01D2251/21 , B01D2255/102 , B01D2255/206 , B01D2255/207 , B01J2523/00 , Y10S502/525
摘要: A catalyst for catalytic reduction of nitrogen oxide using at least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound is described, which includes an oxide represented by formula (V):A.sup.5.sub.x B.sup.3.sub.3-x C.sup.4.sub.3 O.sub.7 (V)wherein A.sup.5 represents at least one element selected from the group consisting of La, Y, Ce, Pr, Nd, Sm, Eu, and Gd; B.sup.3 represents at least one element selected from the group consisting of Ba, Sr, Ca, Mg, Pb, Zn, and Ag; C.sup.4 represents at least one element selected from the group consisting of Mn, Co, Fe, Ni, Cr, Cu, V, Mo, W, Ti, Zr, Nb, Pd, Rh, Ru, and Pt; and x is a number of from 0 to 1, supported on a solid acid carrier. Also, methods for catalytic reduction of nitrogen oxide are described including reacting nitrogen oxide with at least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound in the presence of oxygen and a specific catalyst.
摘要翻译: 描述了使用选自烃和含氧有机化合物的至少一种还原剂催化还原氮氧化物的催化剂,其包括由式(V)表示的氧化物:A5xB33-xC43O7(V)其中 A5表示选自La,Y,Ce,Pr,Nd,Sm,Eu和Gd中的至少一种元素; B3表示选自Ba,Sr,Ca,Mg,Pb,Zn和Ag中的至少一种元素; C4表示选自Mn,Co,Fe,Ni,Cr,Cu,V,Mo,W,Ti,Zr,Nb,Pd,Rh,Ru和Pt中的至少一种元素; x是0〜1的数,负载在固体酸性载体上。 此外,描述了氮氧化物的催化还原方法,包括在氧气和特定催化剂存在下使氮氧化物与选自烃和含氧有机化合物的至少一种还原剂反应。
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公开(公告)号:US5733837A
公开(公告)日:1998-03-31
申请号:US628855
申请日:1996-04-05
CPC分类号: B01D53/8628 , B01D53/9418 , B01J29/061 , B01D2251/208 , B01D2255/2065
摘要: A catalyst for catalytic reduction of nitrogen oxides using a hydrocarbon and/or a oxygen-containing organic compound as a reducing agent is disclosed, which comprises a cerium oxide supported on a solid acid carrier. Also, a catalyst for catalytic reduction of nitrogen oxides using a hydrocarbon and/or an oxygen-containing organic compound as a reducing agent is disclosed, which comprises: (a) at least one element selected from the elements of Group Ib, Group IIa, Group IIb, Group IIIa, Group IIIb, Group IVa, Group IVb, Group Va, Group VIa, Group VIIa, and Group VIII in the Periodic Table (hereinafter referred to as the elements belonging to group (a)); and (b) a cerium oxide, supported on a solid acid carrier.
摘要翻译: 公开了一种使用烃和/或含氧有机化合物作为还原剂催化还原氮氧化物的催化剂,其包含负载在固体酸性载体上的氧化铈。 另外,公开了使用烃和/或含氧有机化合物作为还原剂催化还原氮氧化物的催化剂,其包括:(a)选自元素Ib,IIa族, 第IIb族,第Ⅲa族,第IIIb族,第Ⅳa族,第Ⅳb族,Ⅴa族,Ⅵa族,Ⅶa族和Ⅷ族在元素周期表中(以下简称属于(a)组的元素)。 和(b)负载在固体酸性载体上的氧化铈。
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公开(公告)号:US6045765A
公开(公告)日:2000-04-04
申请号:US796884
申请日:1997-02-07
申请人: Tadao Nakatsuji , Ritsu Yasukawa , Keiichi Tabata , Kazuyuki Ueda
发明人: Tadao Nakatsuji , Ritsu Yasukawa , Keiichi Tabata , Kazuyuki Ueda
CPC分类号: B01J23/68 , B01D53/9418 , B01J23/50 , B01D2251/208 , B01D2251/21 , B01D2255/104 , B01D2255/20723 , B01D2255/2073 , B01D2255/20753 , B01D2255/20769 , B01D2255/20776
摘要: The invention provides a catalyst for catalytic reduction of nitrogen oxides which uses a hydrocarbon or an oxygen-containing organic compound as a reducing agent, which comprises silver aluminate supported on a solid acid carrier material. The invention also provides a catalyst which comprises silver aluminate and at least one transition element selected from the group consisting of W, Mo and V, each supported on a solid acid carrier material. The invention further provides a method for producing such catalysts and a method for catalytic reduction of nitrogen oxides by use of such catalysts as above mentioned.
摘要翻译: 本发明提供了一种用于催化还原氮氧化物的催化剂,其使用烃或含氧有机化合物作为还原剂,其包含负载在固体酸性载体材料上的铝酸银。 本发明还提供一种催化剂,其包含铝酸银和至少一种选自W,Mo和V的过渡元素,各自负载在固体酸载体材料上。 本发明还提供了这样的催化剂的制造方法和使用上述催化剂催化还原氮氧化物的方法。
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