Catalyst for selective oxidation and elimination of carbon monoxide present in hydrogen-containing gases
    1.
    发明授权
    Catalyst for selective oxidation and elimination of carbon monoxide present in hydrogen-containing gases 失效
    用于选择性氧化和消除含氢气体中存在的一氧化碳的催化剂

    公开(公告)号:US06576208B1

    公开(公告)日:2003-06-10

    申请号:US09704694

    申请日:2000-11-03

    IPC分类号: B01J2340

    摘要: A catalyst for selective oxidation of carbon monoxide present in a hydrogen-containing gas is provided in which the catalyst comprises ruthenium supported on an alumina hydrate. This catalyst has a high selective oxidation activity to carbon monoxide. A carbon monoxide elimination method using this catalyst is also provided. In this method, to a gas containing at least hydrogen and carbon monoxide and being richer in the hydrogen than the carbon monoxide on the basis of volume, oxygen is added in an amount necessary for oxidizing at least part of carbon monoxide present in that gas, and thereafter the gas to which the oxygen has been added is brought into contact with the catalyst described above. Also provided is a solid polymer electrolyte fuel cell system that utilizes this method.

    摘要翻译: 提供了一种用于选择性氧化存在于含氢气体中的一氧化碳的催化剂,其中催化剂包含负载在氧化铝水合物上的钌。 该催化剂对一氧化碳具有高选择性氧化活性。 还提供了使用该催化剂的一氧化碳消除方法。 在该方法中,基于体积,至少含有一氧化碳和一氧化碳的气体比一氧化碳更丰富,以氧气中存在的至少一部分一氧化碳的量加入氧气, 然后使已经加入氧气的气体与上述催化剂接触。 还提供了利用该方法的固体聚合物电解质燃料电池系统。

    Micro-crystalline boehmites containing additives
    2.
    发明授权
    Micro-crystalline boehmites containing additives 失效
    含有添加剂的微晶布氏体

    公开(公告)号:US06555496B1

    公开(公告)日:2003-04-29

    申请号:US09636688

    申请日:2000-08-11

    IPC分类号: B01J2340

    摘要: A microcrystalline boehmite containing additive in a homogeneously dispersed state. Suitable additives are compounds containing elements selected from the group consisting of alkaline earth metals, alkaline metals, rare earth metals, transition metals, actinides, silicon, gallium, boron, titanium, and phosphorus. The microcrystalline boehmite according to the invention may be prepared in several ways. In general, a microcrystalline boehmite precursor and an additive are converted to a microcrystalline boehmite containing the additive in a homogeneously dispersed state. The additive does not contain zirconia or magnesia.

    摘要翻译: 含有均匀分散状态的含微晶勃姆石的添加剂。 合适的添加剂是含有选自碱土金属,碱金属,稀土金属,过渡金属,锕系元素,硅,镓,硼,钛和磷的元素的化合物。 根据本发明的微晶勃姆石可以以几种方式制备。 通常,微晶勃姆石前体和添加剂以均匀分散的状态转化为含有添加剂的微晶勃姆石。 添加剂不含氧化锆或氧化镁。

    Process and catalyst for preparing C2-oxygenates from synthesis gas
    4.
    发明授权
    Process and catalyst for preparing C2-oxygenates from synthesis gas 失效
    从合成气制备C2-含氧化合物的方法和催化剂

    公开(公告)号:US06500781B2

    公开(公告)日:2002-12-31

    申请号:US09977844

    申请日:2001-10-16

    IPC分类号: B01J2340

    摘要: In a process for preparing C2-oxygenates by reaction of CO and H2over a rhodium-containing supported catalyst, the catalyst comprises, based on the total weight, from 0.01 to 1O% by weight of rhodium, from 0.001 to 10% by weight of zirconium, from 0.01 to 5% by weight of iridium, from 0.01 to 10% by weight of at least one metal selected from among copper, cobalt, nickel, manganese, iron, ruthenium and molybdenum, from 0.01 to 10% by weight of at least one alkali metal or alkaline earth metal selected from among lithium, sodium, potassium, rubidium, magnesium and calcium, on an inert support.

    摘要翻译: 在通过CO和H 2 O与含铑载体催化剂反应制备C2-含氧化合物的方法中,催化剂以总重量为基准计,为0.01-10重量%的铑,0.001至10重量%的锆 0.01至5重量%的铱,0.01至10重量%的至少一种选自铜,钴,镍,锰,铁,钌和钼的金属,至少0.01至10重量% 一种选自锂,钠,钾,铷,镁和钙的碱金属或碱土金属在惰性载体上。

    Catalyst system for purifying oxygen rich exhaust gas
    5.
    发明授权
    Catalyst system for purifying oxygen rich exhaust gas 有权
    用于净化富氧废气的催化剂体系

    公开(公告)号:US06395675B1

    公开(公告)日:2002-05-28

    申请号:US09263836

    申请日:1999-03-08

    IPC分类号: B01J2340

    摘要: A device (catalytic converter) for purifying an exhaust gas. This device has a first catalyst for purifying a NOx of the exhaust gas. This first catalyst contains first and second powders. The first powder has a porous carrier and at least one noble metal loaded on the porous carrier. The at least one noble metal is selected from platinum, palladium and rhodium. The second powder has a first double oxide represented by the general formula (Ln1-&agr;A&agr;)1-&bgr;BO&dgr; where &agr; is a number that is greater than 0 and less than 1, &bgr; is a number that is greater than 0 and less than 1, &dgr; is a number that is greater than 0, Ln is at least one first element selected from La, Ce, Nd and Sm, A is at least one second element selected from Mg, Ca, Sr, Ba, Na, K and Cs, and B is at least one third element selected from Fe, Co, Ni and Mn. The device is improved in capability of purifying NOx contained in an oxygen rich exhaust gas.

    摘要翻译: 一种用于净化废气的装置(催化转化器)。 该装置具有用于净化废气的NOx的第一催化剂。 该第一催化剂含有第一和第二粉末。 第一粉末具有多孔载体和载于多孔载体上的至少一种贵金属。 所述至少一种贵金属选自铂,钯和铑。 第二粉末具有由通式(Ln1-αAalpha)1-βBOdelta表示的第一双氧化物,其中α是大于0且小于1的数,β是大于0且小于1的数, δ是大于0的数,Ln是选自La,Ce,Nd和Sm中的至少一种第一元素,A是选自Mg,Ca,Sr,Ba,Na,K和Cs中的至少一种第二元素, 并且B是选自Fe,Co,Ni和Mn中的至少一种第三元素。 该装置提高了在富氧废气中所含的NOx的净化能力。

    Process for the preparation of high activity carbon monoxide hydrogenation catalysts; the catalyst composition, use of the catalysts for conducting such reactions, and the products of such reactions
    6.
    发明授权
    Process for the preparation of high activity carbon monoxide hydrogenation catalysts; the catalyst composition, use of the catalysts for conducting such reactions, and the products of such reactions 有权
    制备高活性一氧化碳氢化催化剂的方法; 催化剂组合物,用于进行这种反应的催化剂的使用以及这些反应的产物

    公开(公告)号:US06313062B1

    公开(公告)日:2001-11-06

    申请号:US09430805

    申请日:1999-10-29

    IPC分类号: B01J2340

    摘要: A process for the preparation of a catalyst useful for conducting carbon monoxide hydrogenation reactions, particularly Fischer-Tropsch reactions; the catalyst compositions, use of the catalyst compositions for conducting such reactions, and the products of these reactions. The steps of the process for producing the catalyst comprise impregnating a powder, or particulate refractory inorganic oxide solids, preferably silica, with a) a soluble compound or salt of a catalytic metal of the Iron Group, preferably cobalt, and b) a soluble compound, or salt, of a Group VIII noble metal, preferably platinum, suitably by sequential contact of the solids with a solution of (a) and a solution of (b), by sequential contact of the solids with a solution of (b) and a solution of (a), or by contact with a solution which contains both (a) and (b). The metals impregnated solids, or particulate solids precursor material, after impregnation with the Group VIII noble metal, is washed with a hydrocarbyl ammonium hydroxide or ammonium hydroxide solution, the material shaped, dried and calcined, and the metals components thereof thereafter reduced to form the finished catalyst. The catalyst formed from the hydrocarbyl ammonium hydroxide or ammonium hydroxide-washed catalyst precursor, quite surprisingly, is more active and selective in conducting a carbon monoxide hydrogenation reaction to produce hydrocarbon waxes, with lower gas make, than a catalyst of corresponding composition similarly prepared except that the catalyst was prepared from a catalyst precursor which was not washed with a hydrocarbyl ammonium hydroxide or ammonium hydroxide solution.

    摘要翻译: 一种用于制备用于进行一氧化碳氢化反应,特别是费 - 托反应的催化剂的方法; 催化剂组合物,催化剂组合物用于进行这种反应的用途,以及这些反应的产物。 制备催化剂的方法的步骤包括用a)可溶性化合物或铁组的催化金属的盐,优选钴浸渍粉末或颗粒难熔的无机氧化物固体,优选二氧化硅,和b)可溶化合物 ,或第(VIII)族贵金属,优选铂,适当地通过固体与(a)和(b)的溶液的顺序接触,通过将固体与(b)和 (a)的溶液或通过与包含(a)和(b)的溶液的接触)。 在用VIII族贵金属浸渍之后,将金属浸渍的固体或固体颗粒的前体材料用烃基氢氧化铵或氢氧化铵溶液洗涤,将其成型,干燥和煅烧,然后将其金属组分还原形成 成品催化剂。 由烃基氢氧化铵或氢氧化铵洗涤的催化剂前体形成的催化剂相当令人惊奇地在进行一氧化碳氢化反应以产生具有较低气体产生的烃蜡的催化剂中,比类似制备的相应组合物的催化剂更具活性和选择性, 催化剂由未用烃基氢氧化铵或氢氧化铵溶液洗涤的催化剂前体制备。

    Fischer-Tropsch catalyst enhancement
    7.
    发明授权
    Fischer-Tropsch catalyst enhancement 有权
    费 - 托催化剂增强

    公开(公告)号:US06706661B1

    公开(公告)日:2004-03-16

    申请号:US09653719

    申请日:2000-09-01

    IPC分类号: B01J2340

    CPC分类号: C10G2/332 B01J25/00 C10G2/333

    摘要: A process of enhancing both the activity and the methane selectivity of a Dispersed Active Metal (“DAM”) hydrogenation catalyst is disclosed wherein the DAM undergoes low temperature oxidation in a slurry phase to form a stable, unique oxidized catalyst precursor that is subsequently reduced to form an enhanced catalyst by treatment with hydrogen-containing gas at elevated temperature, wherein reducible promoter metals comprising one or more of rhenium, ruthenium, palladium, iron and cobalt are added to the DAM. The promoter metals are mixed with the oxidized catalyst precursor as a solution of their reducible salts. The oxidized catalyst precursors are again recovered from the mixture and treated with hydrogen-containing gas to simultaneously form the metals and reactivate the DAM catalyst.

    摘要翻译: 公开了一种提高分散活性金属(“DAM”)氢化催化剂的活性和甲烷选择性的方法,其中DAM在浆料相中经历低温氧化以形成稳定的独特的氧化催化剂前体,随后将其还原为 通过在升高的温度下用含氢气体处理形成增强的催化剂,其中将包含铼,钌,钯,铁和钴中的一种或多种的可还原助催化剂金属加入到DAM中。 助催化剂金属与其可还原盐的溶液与氧化的催化剂前体混合。 氧化的催化剂前体再次从混合物中回收并用含氢气体处理以同时形成金属并重新活化DAM催化剂。

    Honeycomb structure
    8.
    发明授权
    Honeycomb structure 有权
    蜂窝结构

    公开(公告)号:US06596666B1

    公开(公告)日:2003-07-22

    申请号:US09710908

    申请日:2000-11-14

    申请人: Toshio Yamada

    发明人: Toshio Yamada

    IPC分类号: B01J2340

    CPC分类号: B01J35/04 F01N3/2828

    摘要: A honeycomb structure includes multiple honeycomb segments joined by means of a bonding material. Each of the honeycomb segments has a plurality of passages which are defined by partition walls and extend in an axial direction, Flatness of outer walls to be joining planes of the honeycomb segments is 0.2 mm or more. The honeycomb structure is superior in durability, by which a honeycomb segment does not shift due to vibration or exhaust back pressure in use.

    摘要翻译: 蜂窝结构体包括通过接合材料接合的多个蜂窝段。 每个蜂窝段具有由分隔壁限定并沿轴向延伸的多个通道,作为蜂窝段的接合面的外壁的平坦度为0.2mm以上。 蜂窝结构体的耐久性优异,蜂窝片段在使用中由于振动或排气背压而不发生移动。