Thermally stable nickel-alumina catalysts useful for methanation and
other reactions and method for the manufacture of said catalysts
    1.
    发明授权
    Thermally stable nickel-alumina catalysts useful for methanation and other reactions and method for the manufacture of said catalysts 失效
    用于甲烷化和其他反应的热稳定的镍 - 氧化铝催化剂和用于制造所述催化剂的方法

    公开(公告)号:US4042532A

    公开(公告)日:1977-08-16

    申请号:US651645

    申请日:1976-01-23

    摘要: Nickel-alumina catalysts having a remarkably high degree of thermal stability, and active for the hydrogenation of carbon oxides (methanation), steam reforming, gasification, etc. are prepared by a novel "precipitative-occlusion" method. This method involves digesting a slurry of an alumina hydrate in an aqueous solution of an ammino complex of a nickel salt. The digestion is carried out at a temperature sufficiently high to decompose the ammino complex and "release" the nickel (II) ions. This results in a gradual precipitation of nickel hydroxide in the pores and interstices formed by the agglomerating particles of alumina hydrate. The coflocculated solids are recovered as by filtration, washed, dried and calcined. The resulting compositions are found, in high temperature reactions such as methanation, to retain their activity for much longer periods of time than do conventional nickel-alumina catalysts prepared by the most widely used prior art technique, viz., coprecipitation.

    摘要翻译: 通过新颖的“沉淀 - 闭塞”方法制备具有非常高的热稳定性和对碳氧化物(甲烷化)氢化活性的氧化铝催化剂,蒸汽重整,气化等。 该方法包括在镍盐的氨基络合物的水溶液中消化水合氧化铝的浆料。 消化在足够高的温度下进行以分解淀粉复合物并“释放”镍(II)离子。 这导致氢氧化镍在由氧化铝水合物的附聚颗粒形成的孔隙和间隙中逐渐沉淀。 通过过滤回收共絮凝的固体,洗涤,干燥并煅烧。 在诸如甲烷化的高温反应中发现所得组合物比通过最广泛使用的现有技术制备的常规镍 - 氧化铝催化剂保持其活性更长的时间段,即共沉淀。

    Thermally stable nickel-alumina catalysts useful for methanation
    2.
    发明授权
    Thermally stable nickel-alumina catalysts useful for methanation 失效
    用于甲烷化的热稳定的镍 - 氧化铝催化剂

    公开(公告)号:US4064152A

    公开(公告)日:1977-12-20

    申请号:US651646

    申请日:1976-01-23

    摘要: Nickel-alumina catalysts having a remarkably high degree of thermal stability, and active for the hydrogenation of carbon oxides (methanation), are prepared by a novel "precipitative-occlusion" method. This method involves digesting a slurry of an alumina hydrate in an aqueous solution of an amino complex of a nickel salt. The digestion is carried out at a temperature sufficiently high to decompose the amino complex and "release" the nickel (II) ions. This results in a gradual precipitation of nickel hydroxide in the pores and interstices formed by the agglomerating particles of alumina hydrate. The coflocculated solids are recovered as by filtration, washed, dried and calcined. The resulting compositions are found, in high temperature reactions such as methanation, to retain their activity for much longer periods of time than do conventional nickel-alumina catalysts prepared by the most widely used prior art technique, viz., coprecipitation.

    摘要翻译: 通过新的“沉淀 - 闭塞”方法制备具有非常高的热稳定性和对碳氧化物(甲烷化)氢化有活性的镍 - 氧化铝催化剂。 该方法包括在镍盐的氨基络合物的水溶液中消化水合氧化铝的浆料。 消解在足够高的温度下进行以分解氨基络合物并“释放”镍(II)离子。 这导致氢氧化镍在由氧化铝水合物的附聚颗粒形成的孔隙和间隙中逐渐沉淀。 通过过滤回收共絮凝的固体,洗涤,干燥并煅烧。 在诸如甲烷化的高温反应中发现所得组合物比通过最广泛使用的现有技术制备的常规镍 - 氧化铝催化剂保持其活性更长的时间段,即共沉淀。

    Exhaust gas conversion catalyst and process
    3.
    发明授权
    Exhaust gas conversion catalyst and process 失效
    废气转化催化剂及工艺

    公开(公告)号:US3990995A

    公开(公告)日:1976-11-09

    申请号:US549515

    申请日:1975-02-13

    摘要: Process and catalyst for the catalytic conversion of nitrogen oxides (NO.sub.x), unburned hydrocarbons and carbon monoxide in internal combustion engine exhaust gases. The catalyst comprises rhodium as the essential active component, preferably composited with a nickel component. These catalysts are found to be exceptionally resistant to poisoning by sulfur and lead compounds present in the exhaust gases.

    摘要翻译: 用于内燃机废气中氮氧化物(NOx),未燃碳氢化合物和一氧化碳的催化转化的方法和催化剂。 催化剂包括铑作为必需活性组分,优选与镍组分复合。 发现这些催化剂特别耐受废气中存在的硫和铅化合物的中毒。

    Multiple-stage hydroprocessing of hydrocarbon oil
    4.
    发明授权
    Multiple-stage hydroprocessing of hydrocarbon oil 失效
    烃油多级加氢处理

    公开(公告)号:US4431526A

    公开(公告)日:1984-02-14

    申请号:US395832

    申请日:1982-07-06

    摘要: In the catalytic hydroprocessing of hydrocarbons, a hydrocarbon oil is successively contacted with a first hydroprocessing catalyst in a first reaction zone and a second hydroprocessing catalyst in a second reaction zone. The first catalyst has an average pore diameter at least about 30 angstroms larger than the second catalyst, although both have narrow pore size distributions wherein at least about 90 percent of the total pore volume is in pores of diameter from about 100 angstroms to about 300 angstroms, and with essentially all the pores having diameters greater than 100 angstroms.

    摘要翻译: 在烃的催化加氢处理中,烃油在第一反应区和第二反应区中的第二加氢处理催化剂中依次与第一加氢处理催化剂接触。 第一催化剂具有比第二催化剂大至少约30埃的平均孔径,尽管两者具有窄的孔径分布,其中总孔体积的至少约90%在直径为约100埃至约300埃的孔中 并且基本上所有的孔具有大于100埃的直径。

    Process for reducing CO and SO.sub.x emissions from catalytic cracking
units
    5.
    发明授权
    Process for reducing CO and SO.sub.x emissions from catalytic cracking units 失效
    从催化裂化装置中减少CO和SOx排放的方法

    公开(公告)号:US4311581A

    公开(公告)日:1982-01-19

    申请号:US109756

    申请日:1980-01-07

    摘要: Reduction of CO and SO.sub.x emissions from regenerators associated with cyclical fluidized catalytic cracking (FCC) units used to convert hydrocarbon feedstocks into more valuable products is achieved by introducing particles of bastnaesite into the FCC unit. The bastnaesite particles recycle with the catalyst particles successively through a catalytic cracking reaction zone, a stripping zone, and a regeneration zone. The bastnaesite particles react with SO.sub.x produced in the regeneration zone of the FCC unit, thereby lowering the SO.sub.x content of the flue gas discharged therefrom. In the catalytic cracking and stripping zones of the FCC unit, the bastnaesite particles are at least partially reactivated so that upon returning to the regeneration zone yet more SO.sub.2 is removed. The bastnaesite particles also aid in lowering CO emissions from the FCC regenerator by catalyzing the reaction between CO and oxygen to yield CO.sub.2.

    摘要翻译: 通过将碳酸盐原料颗粒引入FCC单元中,将烃原料转化为更有价值的产物,可以减少与循环流化催化裂化(FCC)单元相关的再生器的CO和SO x排放。 硫酸钠颗粒随催化剂颗粒依次通过催化裂化反应区,汽提区和再生区再循环。 渣滓矿颗粒与在FCC装置的再生区产生的SO x反应,从而降低从其排出的烟道气的SO x含量。 在FCC装置的催化裂化和汽提区域中,韧皮细颗粒至少部分地再活化,使得当返回到再生区时,还除去更多的SO 2。 通过催化CO和氧之间的反应产生二氧化碳,还可以帮助降低FCC再生器的CO排放。

    Thermally stable nickel-alumina catalysts useful for methanation and
other reactions
    7.
    发明授权
    Thermally stable nickel-alumina catalysts useful for methanation and other reactions 失效
    用于甲烷化和其他反应的热稳定的镍 - 氧化铝催化剂

    公开(公告)号:US4191664A

    公开(公告)日:1980-03-04

    申请号:US907804

    申请日:1978-05-19

    摘要: Nickel-alumina catalysts having a remarkably high degree of thermal stability, and active for the hydrogenation of carbon oxides (methanation), steam reforming, gasification, etc. are prepared by a novel "precipitative-occlusion" method. This method involves digesting a slurry of an alumina hydrate in an aqueous solution of an ammino complex of a nickel salt. The digestion is carried out at a temperature sufficiently high to decompose the ammino complex and "release" the nickel (II) ions. This results in a gradual precipitation of nickel hydroxide in the pores and interstices formed by the agglomerating particles of alumina hydrate. The coflocculated solids are recovered as by filtration, washed, dried and calcined. The resulting compositions are found, in high temperature reactions such as methanation, to retain their activity for much longer periods of time than do conventional nickel-alumina catalysts prepared by the most widely used prior art technique, viz, coprecipitation.

    摘要翻译: 通过新颖的“沉淀 - 闭塞”方法制备具有非常高的热稳定性和对碳氧化物(甲烷化)氢化活性的氧化铝催化剂,蒸汽重整,气化等。 该方法包括在镍盐的氨基络合物的水溶液中消化水合氧化铝的浆料。 消化在足够高的温度下进行以分解淀粉复合物并“释放”镍(II)离子。 这导致氢氧化镍在由氧化铝水合物的附聚颗粒形成的孔隙和间隙中逐渐沉淀。 通过过滤回收共絮凝的固体,洗涤,干燥并煅烧。 在诸如甲烷化的高温反应中发现所得组合物比通过最广泛使用的现有技术制备的常规镍 - 氧化铝催化剂(即共沉淀)保持其活性更长的时间。

    Process for rejuvenating automobile emission control catalysts
    8.
    发明授权
    Process for rejuvenating automobile emission control catalysts 失效
    改造汽车排放控制催化剂的工艺

    公开(公告)号:US4039471A

    公开(公告)日:1977-08-02

    申请号:US640645

    申请日:1975-12-15

    IPC分类号: B01D53/86 B01J23/94 B01J23/96

    摘要: A method for the rejuvenation of an automobile emission control catalyst poisoned with deposited compounds of lead and/or phosphorus is disclosed, said method comprising (a) initially extracting some of the poison compounds from the catalyst with a select aqueous ammonium or acetate salt (preferably ammonium acetate) solution; (b) exposing the catalyst to a reducing atmosphere at 300.degree. to 700.degree. C., and finally (c) removing at least a portion of the poison compounds by a second extraction with a select aqueous ammonium or acetate salt solution. Catalysts contemplated for rejuvenation herein include those comprising nickel, palladium, rhodium, platinum, or combinations thereof as active components on bases of alumina or aluminum borate.

    摘要翻译: 公开了一种用沉淀的铅和/或磷化合物中毒的汽车排放物控制催化剂复原的方法,所述方法包括(a)用选择的铵或乙酸盐水溶液(优选地)从催化剂中初步提取一些毒化合物 乙酸铵)溶液; (b)将催化剂暴露于300℃至700℃的还原气氛中,最后(c)通过用选择性的铵或乙酸盐水溶液的第二次萃取除去至少一部分毒化合物。 考虑用于复兴的催化剂包括在氧化铝或硼酸铝的基础上包含镍,钯,铑,铂或其组合作为活性组分的那些。

    Process for rejuvenating automobile emission control catalysts
    9.
    发明授权
    Process for rejuvenating automobile emission control catalysts 失效
    改造汽车排放控制催化剂的工艺

    公开(公告)号:US3983052A

    公开(公告)日:1976-09-28

    申请号:US565633

    申请日:1975-04-07

    IPC分类号: B01D53/94 B01J23/90 B01D15/06

    摘要: A method for the rejuvenation of an automobile emission control catalyst poisoned with compounds of lead and/or phosphorus comprising (a) initially extracting lead sulfate deposits from the catalyst with an aqueous ammonium salt (preferrably ammonium acetate) solution; (b) exposing the catalyst to an atmosphere containing SO.sub.2, or SO.sub.2 and air, at 300.degree. to 700.degree.C. until other lead compounds are substantially converted to lead sulfate, and phosphorus compounds are substantially converted to gaseous P.sub.2 O.sub.5 ; and finally (c) removing at least a portion of the lead sulfate formed in (b) by a second extraction with an aqueous ammonium salt solution.Catalysts contemplated for rejuvenation by the process of the invention include those comprising nickel, palladium, rhodium, platinum, or combinations thereof as active components on bases of alumina or aluminum borate.

    摘要翻译: 一种用铅和/或磷化合物中毒的汽车排放物控制催化剂复原的方法,包括(a)用铵盐(优选乙酸铵)溶液最初从催化剂中提取硫酸铅沉积物; (b)在300℃至700℃下将催化剂暴露于含SO2或SO2和空气的气氛中,直到其它铅化合物基本上转化为硫酸铅,磷化合物基本上转化为气态P 2 O 5; 最后(c)通过用铵盐水溶液的第二次萃取除去(b)中形成的至少一部分硫酸铅。

    Process for reducing CO and SO.sub.x emissions from catalytic cracking
units

    公开(公告)号:US4366083A

    公开(公告)日:1982-12-28

    申请号:US228267

    申请日:1981-01-26

    摘要: Reduction of CO and SO.sub.x emissions from regenerators associated with cyclical fluidized catalytic cracking (FCC) units used to convert hydrocarbon feedstocks into more valuable products is achieved by introducing particles of bastnaesite into the FCC unit. The bastnaesite particles recycle with the catalyst particles successively through a catalytic cracking reaction zone, a stripping zone, and a regeneration zone. The bastnaesite particles react with SO.sub.x produced in the regeneration zone of the FCC unit, thereby lowering the SO.sub.x content of the flue gas discharged therefrom. In the catalytic cracking and stripping zones of the FCC unit, the bastnaesite particles are at least partially reactivated so that upon returning to the regeneration zone yet more SO.sub.2 is removed. The bastnaesite particles also aid in lowering CO emissions from the FCC regenerator by catalyzing the reaction between CO and oxygen to yield CO.sub.2.