Gas desulfurization
    3.
    发明授权
    Gas desulfurization 失效
    气体脱硫

    公开(公告)号:US4002720A

    公开(公告)日:1977-01-11

    申请号:US536164

    申请日:1974-12-24

    摘要: Hydrogen sulfide and its precursors can be selectively sorbed from gas streams containing the same by contacting the gas stream at elevated temperatures with a regenerable sorbent comprising a steam-treated support composited with a rare earth metal component. Presteaming the support lowers the amount of rare earth metal component needed to achieve a given activity level for hydrogen sulfide removal. Subsequent to sorption, the sorbent composite may be desorbed and regenerated by treatment with steam (desorption) and an oxidizing gas (regeneration). The sorbent capacity may be increased by the use of alkali or alkaline earth metal components as promoters. A preferred sorbent comprises lanthanum composited with presteamed alumina.

    摘要翻译: 硫化氢及其前体可以通过使高温气流与含有与稀土金属组分合成的经蒸汽处理的载体的可再生吸附剂接触而从含有它们的气流中选择性吸收。 预硫化载体降低了实现硫化氢去除的给定活性水平所需的稀土金属组分的量。 在吸附之后,吸附剂复合物可以通过用蒸汽(解吸)和氧化气体(再生)处理来解吸和再生。 吸附剂容量可以通过使用碱金属或碱土金属组分作为助催化剂而增加。 优选的吸附剂包括与预制氧化铝复合的镧。

    Hydrovisbreaking of hydrocarbon polymers
    4.
    发明授权
    Hydrovisbreaking of hydrocarbon polymers 失效
    烃聚合物的加氢脱硫

    公开(公告)号:US5296515A

    公开(公告)日:1994-03-22

    申请号:US893165

    申请日:1992-06-03

    IPC分类号: C08F8/50

    CPC分类号: C08F8/50

    摘要: A method is provided for hydrovisbreaking hydrocarbon polymers, particularly those derived from scrap articles, in which a mixture of at least one hydrocarbon polymer and a solvent is contacted with hydrogen under conditions sufficient to hydrovisbreak the polymer. The solvent comprises a combined weight percentage of C.sub.n H.sub.2n-8 and C.sub.n H.sub.2n-10 hydrocarbons of at least about 10 weight percent, where n is an integer of at least 8 in C.sub.n H.sub.2n-8 and n is an integer of at least 10 in C.sub.n H.sub.2n-10. The hydrovisbroken polymer can be fed to a catalytic cracker for cracking to cracked products.

    摘要翻译: 提供了一种用于加氢裂解烃聚合物,特别是衍生自废料的那些烃聚合物的方法,其中至少一种烃聚合物和溶剂的混合物在足以使聚合物破裂的条件下与氢气接触。 溶剂包括CnH2n-8和CnH2n-10烃的至少约10重量%的组合重量百分数,其中n是C n H 2n-8中的至少8的整数,n是C n H 2n-10中的至少10的整数 。 加氢分解聚合物可以进料到催化裂化器中以开裂裂化产物。

    Transition metal mediated oxidation of hetero atoms in organic molecules coordinated to transition metals
    8.
    发明申请
    Transition metal mediated oxidation of hetero atoms in organic molecules coordinated to transition metals 失效
    过渡金属介导的有机分子中杂原子的氧化与过渡金属配位

    公开(公告)号:US20090274755A1

    公开(公告)日:2009-11-05

    申请号:US12459757

    申请日:2009-07-07

    摘要: The present invention is directed to a process for the catalytic oxidation of the thioether 5-methoxy-2-((4-methoxy-3,5-dimethyl-2-pyridinyl)methyl)methylthio)-1H-benzimidazole to its sulfoxide: 5-methoxy-2-((4-methoxy-3,5-dimethyl-2-pyridinyl) methyl)methylsulfinyl)-1H-benzimidazole comprising: reacting the thioether with: 1) a transition metal catalyst; and, 2) an oxygen source; wherein the thioether is oxidized to a sulfoxide and wherein one of either the R and S enantiomers is formed to an enantiomeric excess.

    摘要翻译: 本发明涉及一种将硫醚5-甲氧基-2 - ((4-甲氧基-3,5-二甲基-2-吡啶基)甲基)甲硫基)-1H-苯并咪唑催化氧化成其亚砜的方法:5 - ((4-甲氧基-3,5-二甲基-2-吡啶基)甲基)甲基亚磺酰基)-1H-苯并咪唑包括:使硫醚与以下物质反应:1)过渡金属催化剂; 和2)氧源; 其中所述硫醚被氧化成亚砜,并且其中R和S对映异构体之一形成为对映体过量。

    Catalyst and a process for its preparation
    9.
    发明授权
    Catalyst and a process for its preparation 失效
    催化剂及其制备方法

    公开(公告)号:US4219447A

    公开(公告)日:1980-08-26

    申请号:US970936

    申请日:1978-12-19

    摘要: A novel catalyst precursor which comprises a Group IV-B transition metal oxide deposited on the surface of an inorganic metal oxide support, preferably alumina; especially where the Group IV-B transition metal oxide is deposited on the support surface as discrete areas separated by areas of support surface which contain little, if any, of said Group IV-B transition metal oxide; and a catalyst composition comprised of a cluster of a Group IV-B transition metal oxide and a Group VIII metal preferably a Group VIII noble metal, deposited on an inorganic metal oxide support, particularly an alumina support, especially where the clusters are deposited on the surface of the support, as discrete clusters separated by areas of support surface which contain little, if any, of said Group VI-B transition metal oxide, or clusters of said Group IV-B and Group VIII metals.

    摘要翻译: 一种新型催化剂前体,其包含沉积在无机金属氧化物载体表面上的优选氧化铝的IV-B族过渡金属氧化物; 特别是在IV-B族过渡金属氧化物沉积在支撑表面上的离散区域中分离的区域,该区域由少量(如果有的话)含有所述IV-B族过渡金属氧化物的支撑表面区域分开; 以及沉积在无机金属氧化物载体上的Ⅳ-B族过渡金属氧化物和Ⅷ族金属,优选Ⅷ族贵金属的簇的催化剂组合物,特别是其上沉积在 支撑体的表面,作为离散的簇,其被包含少量(如果有的话)的所述VI-B族过渡金属氧化物或所述IV-B族和第VIII族金属的簇的支撑表面区域分开。

    Selective automotive exhaust catalysts and a process for their
preparation
    10.
    发明授权
    Selective automotive exhaust catalysts and a process for their preparation 失效
    选择性汽车尾气催化剂及其制备方法

    公开(公告)号:US4171289A

    公开(公告)日:1979-10-16

    申请号:US856930

    申请日:1977-12-02

    摘要: The disclosure herein relates to (a) a process for the preparation of catalysts which are highly active for oxidizing the carbon monoxide (CO) and hydrocarbon (HC) present in automobile exhaust gases, with minimum oxidation of the sulfur dioxide, by controlling the acidity of the support, or carrier, within certain critical ranges while a Group VIII noble metal component, or components, is composited with said support in forming the catalyst; (b) a process embodying the use of the so-formed catalysts in the treatment of automotive exhaust gases; and, (c) the catalyst compositions so-formed from supports the surface acidity of which is controlled. In the formation of the catalysts the total surface acidity of the support on which the metal, or metals, component is deposited is maintained between about 0.01 to about 0.10 micromoles pyridine/m.sup.2, and the surface area of the metal, or metals, component ranges up to about 50 m.sup.2 /g, preferably from about 1 m.sup.2 /g to about 35 m.sup.2 /g, and more preferably from about 1 m.sup.2 /g to about 20 m.sup.2 /g.

    摘要翻译: 本文的公开内容涉及(a)制备催化剂的方法,所述催化剂通过控制酸度来最小程度地氧化二氧化硫,所述催化剂对于氧化汽车废气中存在的一氧化碳(CO)和烃(HC)是高度活性的 的载体或载体在某些临界范围内,而第VIII族贵金属组分或组分与形成催化剂的所述载体复合; (b)在汽车尾气处理中使用如此形成的催化剂的方法; 和(c)由其表面酸度被控制的载体所形成的催化剂组合物。 在催化剂的形成中,金属或金属组分沉积在其上的载体的总表面酸度保持在约0.01至约0.10微摩尔吡啶/ m 2之间,并且金属或金属的组分范围 高达约50m 2 / g,优选约1m 2 / g至约35m 2 / g,更优选约1m 2 / g至约20m 2 / g。