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1.发明授权Selective catalytic reduction of nitrogen oxides using an iron impregnated zeolite catalyst 失效使用铁浸渍的沸石催化剂选择性还原氮氧化物
公开(公告)号：US5451387A
公开(公告)日：1995-09-19
申请号：US271692
申请日：1994-07-07
申请人： Maria D. Farnos , John P. McWilliams , Sanjay B. Sharma , David S. Shihabi , Scott A. Stevenson , James C. Vartuli
发明人： Maria D. Farnos , John P. McWilliams , Sanjay B. Sharma , David S. Shihabi , Scott A. Stevenson , James C. Vartuli
CPC分类号： B01J37/0203 , B01D53/8621 , B01D53/8628 , B01D53/865 , B01D53/9418 , B01J29/072 , B01J29/46 , B01D2251/2062 , B01D2255/20738 , B01D2255/50
摘要： An exhaust gas treatment process useful for the removal of nitrogen oxides using an iron containing zeolite as the catalyst and ammonia as a reducing agent. It is desired to extend the effective temperature range for the selective catalytic reduction (SCR) of nitrogen oxides below about 400.degree. C. This is accomplished in the instant invention through the use of an intermediate pore size zeolite, such as ZSM-5, based catalyst which has been treated to incorporate iron into its pores.
摘要翻译： 用于使用含铁沸石作为催化剂除去氮氧化物的废气处理方法和氨作为还原剂。 期望将氮氧化物的选择性催化还原（SCR）的有效温度范围延伸到低于约400℃。这在本发明中通过使用中等孔径的沸石，例如ZSM-5，基于 已经处理以将铁掺入其孔中的催化剂。
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公开(公告)号：US5589147A
公开(公告)日：1996-12-31
申请号：US271685
申请日：1994-07-07
IPC分类号： B01D53/86 , B01D53/94 , B01J29/072 , B01J37/02 , C01B21/00
CPC分类号： B01J37/0203 , B01D53/8621 , B01D53/865 , B01D53/9418 , B01J29/072 , B01D2251/2062 , B01D2255/20738 , B01D2255/504
摘要： There is presented a process for the treatment of exhaust gas, which process uses a specially prepared catalyst composition, for the selective catalytic reduction of NO.sub.x contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NO.sub.x over a catalyst composition comprising a molecular sieve that has been treated with a metal in a way effective to maximize metal dispersion. The catalyst of this invention typically comprises a silica, titania, or zirconia binder, e.g. a binder including a high molecular weight, hydroxyl functional silicone resin. The catalyst of this invention may be formed into a desired shape, e.g., by extrusion, and finished in a humidified atmosphere after forming.
摘要翻译： 提出了一种处理废气的方法，该方法使用特别制备的催化剂组合物来选择性催化还原废气中所含的NOx。 本发明方法的一个实施方案包括催化阶段，以选择性地催化还原NOx，所述催化剂组合物包含用有效使金属分散最大化的金属处理的分子筛。 本发明的催化剂通常包括二氧化硅，二氧化钛或氧化锆粘合剂，例如， 包含高分子量羟基官能的有机硅树脂的粘合剂。 本发明的催化剂可以例如通过挤出形成所需的形状，并在成型后的加湿气氛中成型。
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3.发明授权
公开(公告)号：US06143261A
公开(公告)日：2000-11-07
申请号：US990459
申请日：1997-12-15
CPC分类号： B01J29/042 , B01D53/8628 , B01D53/9418 , B01J29/0308 , B01J29/041 , B01J29/045 , B01D2251/2067 , B01D2255/202 , B01D2255/204 , B01D2255/20761 , Y02T10/24
摘要： MCM-56 and MCM-49 have been demonstrated to be effective catalysts for the reduction of nitrogen oxide (NO.sub.x) emissions in a net oxidizing environment such as Selective Catalytic Reduction or lean burn engine exhaust applications. MCM-56 and MCM-49 can be utilized as a component of a spherical or cylindrical catalyst particle or as a wash coat on a ceramic or metallic monolith. Optionally, a transition metal such as copper, can be added to the catalyst for improved activity.
摘要翻译： MCM-56和MCM-49已经被证明是在净氧化环境（如选择性催化还原或贫燃发动机排气应用）中减少氮氧化物（NOx）排放的有效催化剂。 MCM-56和MCM-49可用作球形或圆柱形催化剂颗粒的组分或作为陶瓷或金属整料上的洗涤涂层。 任选地，可以将诸如铜的过渡金属加入到催化剂中以改善活性。
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4.发明授权Shape selective zeolite catalyst and its use in aromatic compound conversion 有权形状选择性沸石催化剂及其在芳香族化合物转化中的应用公开(公告)号：US06486373B1
公开(公告)日：2002-11-26
申请号：US09011171
申请日：1998-11-04
IPC分类号： B01J2940
CPC分类号： C07C5/2708 , B01J29/04 , B01J29/40 , B01J37/0009 , B01J37/084 , B01J2229/123 , B01J2229/16 , B01J2229/32 , B01J2229/34 , C07C4/04 , C07C4/18 , C07C5/41 , C07C6/123 , C07C2529/40 , Y02P20/52 , C07C15/00 , C07C15/08
摘要： A shape-selective catalyst comprises a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element, such as aluminum, boron, iron and/or gallium, preferably aluminum; Y is a tetravalent element such as silicon and/or germanium, preferably silicon; and n is greater than about 12, and wherein the crystals have a major dimension of at least about 0.5 micron and a surface YO2/X2O3 ratio which is no more than 20% less than the bulk YO2/X2O3 ratio of the crystal. The crystals have a diffusion-modifying surface coating of a refractory material such as silica or coke. The catalyst is useful in a wide variety of selective hydrocarbon conversion processes, particularly the selective disproportionation of toluene to para-xylene.
摘要翻译： 形状选择性催化剂包括具有ZSM-5结构的合成多孔结晶材料和涉及摩尔关系的组成：X 2 O 3：（n）YO 2，其中X是三价元素，例如铝，硼，铁和/或 镓，优选铝; Y是四价元素，例如硅和/或锗，优选硅; 并且n大于约12，并且其中所述晶体的主要尺寸为至少约0.5微米，并且表面YO 2 / X 2 O 3比率不超过所述晶体的体积YO 2 / X 2 O 3比率的20％以下。 晶体具有耐火材料如二氧化硅或焦炭的扩散改性表面涂层。 该催化剂可用于多种选择性烃转化方法，特别是甲苯对对二甲苯的选择性歧化。
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5.发明授权
公开(公告)号：US5520895A
公开(公告)日：1996-05-28
申请号：US271693
申请日：1994-07-07
申请人： Sanjay B. Sharma , David S. Shihabi
发明人： Sanjay B. Sharma , David S. Shihabi
IPC分类号： B01D53/86 , B01D53/94 , B01J29/072 , B01J37/02 , C01B21/00
CPC分类号： B01J37/0203 , B01D53/8621 , B01D53/865 , B01D53/9418 , B01J29/072 , B01D2251/2062 , B01D2255/20738 , B01D2255/50
摘要： There is provided a process for the treatment of exhaust gas, which process uses a specially prepared catalyst composition, for the selective catalytic reduction of NO.sub.x contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NO.sub.x over a catalyst composition comprising an intermediate pore size zeolite catalyst that has been treated with a water soluble iron salt or salt precursor in a way effective to maximize iron dispersion. The intermediate pore size zeolite of this invention preferably has a silica:alumina molar ratio of between about 20 and about 1000. The catalyst of this invention typically comprises a silica, titania, or zirconia binder, preferably a binder including a high molecular weight, hydroxyl functional silicone resin. The catalyst of this invention is preferably formed, e.g., extruded, and then simultaneously calcined and hydrothermally treated.
摘要翻译： 提供了一种处理废气的方法，该方法使用特别制备的催化剂组合物来选择性催化还原废气中所含的NOx。 本发明方法的一个实施方案包括催化阶段，以催化还原催化剂还原催化剂组合物，该催化剂组合物包含中和孔径的沸石催化剂，该催化剂已经以有效使铁分散最大化的方式用水溶性铁盐或盐前体处理。 本发明的中等孔径沸石优选具有约20至约1000的二氧化硅：氧化铝摩尔比。本发明的催化剂通常包含二氧化硅，二氧化钛或氧化锆粘合剂，优选包含高分子量羟基的粘合剂 功能硅树脂。 本发明的催化剂优选形成例如挤出，然后同时进行煅烧和水热处理。
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公开(公告)号：US5676912A
公开(公告)日：1997-10-14
申请号：US391859
申请日：1995-02-22
申请人： Sanjay B. Sharma , David S. Shihabi
发明人： Sanjay B. Sharma , David S. Shihabi
CPC分类号： B01D53/945 , Y02T10/22
摘要： There is provided a multizone catalytic process for the treatment of exhaust gas comprising nitrogen oxides, hydrocarbons, and carbon monoxide. In the multizone catalytic process, the exhaust gas is directed through a first zone, a second zone, and a third zone. The first zone comprises a catalyst that is effective for the three-way conversion of nitrogen oxides, hydrocarbons, and carbon monoxide. The second zone comprises materials effective to sorb hydrocarbons, e.g., zeolites ZSM-5 and Beta, particularly iron modified zeolites ZSM-5 and Beta. The second zone is effective for the adsorption of hydrocarbons from the exhaust gas during the cold-start period of operation of an internal combustion engine. The third zone comprises a catalyst that is effective for the oxidation of hydrocarbons and carbon monoxide.
摘要翻译： 提供了一种用于处理包含氮氧化物，碳氢化合物和一氧化碳的废气的多区域催化方法。 在多区域催化过程中，废气被引导通过第一区域，第二区域和第三区域。 第一区域包含对氮氧化物，碳氢化合物和一氧化碳三元转化有效的催化剂。 第二区域包括有效吸附烃的材料，例如沸石ZSM-5和β，特别是铁改性沸石ZSM-5和β。 第二区域对于在内燃机的冷启动期间从排气中吸附碳氢化合物是有效的。 第三区域包含对烃和一氧化碳的氧化有效的催化剂。
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7.发明授权Selective catalytic reduction of nitrogen oxides using a ferrocene impregnated zeolite catalyst 失效使用二茂铁浸渍的沸石催化剂选择性还原氮氧化物
公开(公告)号：US5482692A
公开(公告)日：1996-01-09
申请号：US271694
申请日：1994-07-07
IPC分类号： B01D53/86 , B01D53/94 , B01J29/072 , B01J29/46 , B01J37/02 , B01J37/08 , C01B21/04 , F01N3/20 , F02B1/04
CPC分类号： F01N3/2066 , B01D53/8621 , B01D53/8628 , B01D53/865 , B01D53/9418 , B01J29/072 , B01J29/46 , B01J37/0203 , B01J37/086 , B01D2251/2062 , B01D2255/20738 , B01D2255/50 , B01J2229/26 , B01J2229/42 , F01N2610/02 , F02B1/04 , Y02T10/24
摘要： An exhaust gas treatment process useful for the removal of nitrogen oxides using an iron impregnated zeolite as the catalyst and ammonia as a reducing agent. It is desired to extend the effective temperature range for the selective catalytic reduction (SCR) of nitrogen oxides below about 400.degree. C. This is accomplished in the instant invention through the use of an intermediate pore size zeolite, such as ZSM-5, based catalyst which has been ferrocene treated to substantially incorporate iron into its pores. The catalyst may also be hydrothermally treated at least once, if desired.
摘要翻译： 使用铁浸渍沸石作为催化剂除去氮氧化物的废气处理方法，氨作为还原剂。 期望将氮氧化物的选择性催化还原（SCR）的有效温度范围延伸到低于约400℃。这在本发明中通过使用中等孔径的沸石，例如ZSM-5，基于 已经将二茂铁处理以将铁基本上并入其孔中的催化剂。 如果需要，也可以将催化剂水热处理至少一次。
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8.发明授权公开(公告)号：US06512155B1
公开(公告)日：2003-01-28
申请号：US09556811
申请日：2000-04-25
IPC分类号： C07C522
CPC分类号： C07C5/2724 , C07C2529/65 , C07C2529/70 , C07C2529/85 , C07C15/067
摘要： An improved process is disclosed for ethylbenzene and xylene isomerization in a non-equilibrium mixture of xylenes and ethylbenzene. By addition of trace quantities of water to the reaction zone, equivalent isomerization is effected at lower temperatures wherein benefits could be realized in reduced losses and improved catalyst life.
摘要翻译： 公开了在二甲苯和乙苯的非平衡混合物中的乙苯和二甲苯异构化的改进方法。 通过向反应区添加微量的水，相应的异构化在较低温度下进行，其中可以以减少的损失和改善的催化剂寿命实现有益效果。
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公开(公告)号：US06222086B1
公开(公告)日：2001-04-24
申请号：US09348119
申请日：1999-07-02
申请人： Sanjay B. Sharma , Aaron J. Imrie
发明人： Sanjay B. Sharma , Aaron J. Imrie
IPC分类号： C07C522
CPC分类号： C07C5/2724 , B01J29/005 , B01J29/12 , B01J29/22 , B01J29/44 , B01J29/67 , B01J29/74 , B01J29/7446 , B01J29/7453 , B01J29/7469 , B01J29/7484 , B01J29/84 , B01J29/85 , B01J2229/20 , B01J2229/36 , B01J2229/42 , C07C2523/40 , C07C2529/04 , C07C2529/068 , C07C15/067
摘要： This invention is drawn to a catalyst system comprising two or more molecular sieves, including at least one non-zeolitlc molecular sieve and one zeolitic aluminosilicate, having specified contrasting pore structures and to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using the subject catalyst system to obtain an improved yield of para-xylene from the mixture relative to prior-art processes.
摘要翻译： 本发明涉及包含两种或更多种分子筛的催化剂体系，所述分子筛包括具有特定对比孔结构的至少一种非沸石分子筛和一种沸石硅铝酸盐，以及使用二甲苯和乙苯的非平衡混合物异构化的方法，使用 本发明的催化剂体系相对于现有技术的方法从混合物中获得提高的对二甲苯的产率。
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公开(公告)号：US06143941A
公开(公告)日：2000-11-07
申请号：US261249
申请日：1999-03-03
CPC分类号： C07C15/08 , C07C5/2724 , C07C2523/40 , C07C2523/42 , C07C2527/167 , C07C2529/40
摘要： This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using an oil-dropped catalyst comprising a zeolite, a platinum-group metal and an aluminophosphate binder, resulting in a greater yield of para-xylene at favorable conditions compared to processes of the known art.
摘要翻译： 本发明涉及使用包含沸石，铂族金属和磷酸铝粘合剂的油滴催化剂使二甲苯和乙苯的非平衡混合物异构化的方法，导致在有利条件下更高的对二甲苯产率 与已知技术的方法相比。
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