Preparation of mixed oxide catalysts comprising the oxides of molybdenum
and/or tungsten
    1.
    发明授权
    Preparation of mixed oxide catalysts comprising the oxides of molybdenum and/or tungsten 失效
    制备包含钼和/或钨的氧化物的混合氧化物催化剂

    公开(公告)号:US4388226A

    公开(公告)日:1983-06-14

    申请号:US316896

    申请日:1981-10-30

    摘要: Mixed oxide active catalysts having the formula:A.sub.a Mo.sub.c W.sub.d Co.sub.e B.sub.b O.sub.xwherein:A is at least one of the metals nickel, manganese and/or lead;B is at least one of the metals iron, bismuth, chromium and/or thallium;a is the sum of the values indicating the amounts present of each of the metals A, and is a number ranging from greater than or equal to 0 to about 4;c and d are numbers each equal to or greater than 0 and ranging to 12, with the sum c+d being about 12;e is a number ranging from about 8 to about 12;b is the sum of the values indicating the amounts present of each of the metals B, and is a number ranging from greater than 0 to about 1.5 [(c+d)-(a+e)]; andx is a number satisfying all unbalanced valences,are prepared by, in a first stage, intimately admixing in aqueous phase the salts of all metals to comprise such active catalyst, with the salts of molybdenum and/or tungsten being ammonium salts and at least one salt of at least one of the metals A and B being a nitrate; and, in a second stage, drying and calcining. In the process, the problems of ammonium nitrate formation are avoided by, in the first stage, acidifying an aqueous solution comprising the ammonium salts of molybdenum and/or tungsten to a pH ranging from about 0.5 to 3, separating the molybdic and/or tungstic acid precipitates which thereby form and preparing an aqueous suspension thereof, and then admixing therewith aqueous solutions of the metal salts of the remaining metals comprising the catalyst.

    摘要翻译: 具有下式的复合氧化物活性催化剂:AaMocWdCoeBbOx其中:A是金属镍,锰和/或铅中的至少一种; B是至少一种金属铁,铋,铬和/或铊; a是表示金属A各自存在的量的值的和,为大于等于0〜4的数; c和d分别为等于或大于0且范围为12的数字,并且c + d为约12; e为约8至约12的数; b是表示每种金属B存在的量的值的和,大于0至约1.5 [(c + d) - (a + e)]; 并且x是满足所有不平衡价数的数字,通过在第一阶段中将所有金属的盐包含在这种活性催化剂中,在第一阶段中将钼和/或钨的盐作为铵盐和至少 金属A和B中的至少一种的一种盐是硝酸盐; 并在第二阶段中进行干燥和煅烧。 在此过程中,通过在第一阶段将包含钼和/或钨的铵盐的水溶液酸化至约0.5至3的pH,可以避免形成硝酸铵的问题,将钼和/或钨 从而形成并制备其水性悬浮液,然后与包含催化剂的剩余金属的金属盐的水溶液混合。

    Thermally stable composite base metal oxide catalysts
    2.
    发明授权
    Thermally stable composite base metal oxide catalysts 失效
    热稳定复合基体金属氧化物催化剂

    公开(公告)号:US3904553A

    公开(公告)日:1975-09-09

    申请号:US38996973

    申请日:1973-08-20

    摘要: A composite base metal oxide catalyst of improved high temperature stability is provided by prereacting a selected base metal oxide catalyst or its precursor compounds with a selected refractory high-surface-area spinel or its precursor compounds to form a crystalline solid solution of the catalyst and the spinel. This solid solution has the properties of good catalytic activity and high temperature structural and surface area stability. An example of such a composite catalyst is CuCr2O4 in solid solution with NiAl2O4.

    摘要翻译: 通过将所选择的基体金属氧化物催化剂或其前体化合物与选定的耐火高表面积尖晶石或其前体化合物预反应以形成催化剂的结晶固溶体和 尖晶石 该固溶体具有良好的催化活性和高温结构和表面积稳定性。 这种复合催化剂的实例是具有NiAl 2 O 4的固溶体中的CuCr 2 O 4。

    Reforming catalyst containing a group VIII noble metal, a group VIII
non-noble metal, and gallium on separate support particles
    4.
    发明授权
    Reforming catalyst containing a group VIII noble metal, a group VIII non-noble metal, and gallium on separate support particles 失效
    含有VIII族贵金属,VIII族非贵金属和镓的单独载体颗粒上的重整催化剂

    公开(公告)号:US4469812A

    公开(公告)日:1984-09-04

    申请号:US533145

    申请日:1983-09-16

    摘要: The catalyst comprises a physical particle-form mixture of a Component A, a Component B, and a Component C, said Component A comprising at least one Group VIII noble metal, preferably platinum, deposed on a solid catalyst support material providing acidic catalytic sites, said Component B comprising a small amount of a non-noble metal of Group VIII selected from cobalt, nickel, and mixtures thereof, preferably cobalt, on a solid catalyst support material providing acidic catalytic sites, said Component C comprising a small amount of gallium deposed on a solid catalyst support material providing acidic catalytic sites, and said catalyst having been prepared by thoroughly and intimately blending finely-divided particles of said Components A, B, and C to provide a thoroughly-blended composite.The catalyst can be employed suitably in a hydrocarbon conversion process. In particular, the catalyst can be employed in a process for the reforming of a hydrocarbon stream, which process comprises contacting said stream in a reforming zone under reforming conditions and in the presence of hydrogen with said catalyst. The process can be used advantageously to reform a hydrocarbon stream that contains up to 80 ppm sulfur.

    摘要翻译: 催化剂包含组分A,组分B和组分C的物理颗粒形式的混合物,所述组分A包含至少一种第八族贵金属,优选铂,其沉积在提供酸性催化位点的固体催化剂载体材料上, 所述组分B包含少量选自钴,镍及其混合物,优选钴的非贵金属的第Ⅷ族,在提供酸性催化位点的固体催化剂载体材料上,所述组分C包含少量镓, 在提供酸性催化位点的固体催化剂载体材料上,并且所述催化剂通过将所述组分A,B和C的细碎颗粒彻底和紧密地混合以提供充分混合的复合材料制备。 催化剂可以在烃转化方法中适当地使用。 特别地,催化剂可以用于烃流重整的方法中,该方法包括在重整条件下和氢气存在下将所述物流在重整区中与所述催化剂接触。 该方法可有利地用于重整含有高达80ppm硫的烃流。

    Dehydrocyclization with an acidic multimetallic catalytic composite
    5.
    发明授权
    Dehydrocyclization with an acidic multimetallic catalytic composite 失效
    用酸性多金属催化复合材料脱氢环化

    公开(公告)号:US4036903A

    公开(公告)日:1977-07-19

    申请号:US721137

    申请日:1976-09-07

    申请人: George J. Antos

    发明人: George J. Antos

    摘要: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at dehydrocyclization conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a bismuth component, a cobalt component, and a halogen component with a porous carrier material. The platinum group, bismuth, cobalt and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % cobalt, about 0.01 to about 5 wt. % bismuth, and about 0.1 to about 3.5 wt. % halogen. Moreover, the catalytically active sites induced by these metallic components are uniformly dispersed throughout the porous carrier material and these metallic components are present in the catalyst in carefully controlled oxidation states such that substantially all of the platinum group component is in the elemental metallic state, substantially all of the bismuth component is preferably in an oxidation state above that of the elemental metal, and substantially all of the catalytically available cobalt component is present in the elemental metallic state or in a state which is reducible to the elemental metallic state under dehydrocyclization conditions, or in a mixture of these states. A specific example of dehydrocyclization method disclosed herein is a method for converting a feed mixture of n-hexane and n-heptane to a product mixture of benzene and toluene which involves contacting the feed mixture and a hydrogen stream with the acidic multimetallic catalyst disclosed herein at dehydrocyclization conditions.

    摘要翻译: 将脱氢可环化烃转化为芳族化合物,使其在脱氢环化条件下与含有催化有效量的铂族组分,铋组分,钴组分和卤素组分与多孔载体材料的组合的酸性多金属催化复合物接触。 铂族,铋,钴和卤素组分分别以基于元素计算的量存在于多金属催化剂中,相当于约0.01至约2wt。 %铂族金属,约0.05至约5wt。 %钴,约0.01至约5wt。 %铋,和约0.1至约3.5wt。 %卤素。 此外,由这些金属组分诱导的催化活性位点均匀地分散在整个多孔载体材料中,并且这些金属组分以仔细控制的氧化态存在于催化剂中,使得基本上所有的铂族组分都处于元素金属状态, 所有的铋成分优选处于高于元素金属的氧化态,并且基本上所有的催化可用的钴成分都以元素金属状态存在,或者在脱氢环化条件下以可还原成元素金属状态的状态存在, 或这些状态的混合物。 本文公开的脱氢环化方法的具体实例是将正己烷和正庚烷的进料混合物转化为苯和甲苯的产物混合物的方法,其包括使进料混合物和氢气流与本文公开的酸性多金属催化剂接触 脱氢环化条件。

    Catalysts and process for unsaturated aldehydes
    8.
    发明授权
    Catalysts and process for unsaturated aldehydes 失效
    不饱和醛的催化剂和工艺

    公开(公告)号:US4374759A

    公开(公告)日:1983-02-22

    申请号:US327848

    申请日:1981-12-07

    申请人: Sargis Khoobiar

    发明人: Sargis Khoobiar

    摘要: A catalyst composition useful for the oxidation of olefins, particularly the vapor phase oxidation of isobutylene and/or tertiary butyl alcohol to produce methacrolein, consists essentially of the combination of oxides of molybdenum, cobalt, iron, bismuth, thallium, antimony, silicon, and nickel, along with one or more members of the groups consisting of the alkali metals, the alkaline earth metals, the rare earth metals including lanthanum, tungsten, and mixtures thereof. The catalyst has a BET surface area within the range of about 0.5-10 m.sup.2 /gm and preferably within the range of about 2-6 m.sup.2 /gm. Preferably, the catalyst has no more than about 3% of the surface area associated with pores smaller than about 100 A.degree.. The catalyst is heated during its preparation to a temperature above 525.degree. C., preferably above 550.degree. C., most preferably to about 600.degree. C., for a time sufficient to achieve the desired surface area and pore size distribution and thereby to improve selectivity to methacrolein.

    摘要翻译: 用于烯烃氧化的催化剂组合物,特别是异丁烯和/或叔丁醇的气相氧化以产生甲基丙烯醛,主要由钼,钴,铁,铋,铊,锑,硅和 镍,以及由碱金属,碱土金属,稀土金属,包括镧,钨及其混合物组成的一组或多种成员。 催化剂的BET表面积在约0.5-10m 2 / gm的范围内,优选在约2-6m 2 / gm的范围内。 优选地,催化剂具有不超过约小于约100A°的孔的表面积的约3%。 将催化剂在制备过程中加热至高于525℃,优选高于550℃,最优选至约600℃的温度足以实现所需表面积和孔径分布,从而改善 甲基丙烯醛的选择性。

    Supported heteronuclear noble metal cluster catalysts and method for
preparing same
    9.
    发明授权
    Supported heteronuclear noble metal cluster catalysts and method for preparing same 失效
    负载型异核贵金属簇催化剂及其制备方法

    公开(公告)号:US4271302A

    公开(公告)日:1981-06-02

    申请号:US101423

    申请日:1979-12-10

    申请人: Gary B. McVicker

    发明人: Gary B. McVicker

    摘要: New heteronuclear noble metal cluster complexes have been discovered and synthesized for the first time. These complexes are (pyridine).sub.2 Pt[Ir.sub.6 (CO).sub.15 ], (pyridine).sub.2 Pt[Ir.sub.2 (CO).sub.7 ], (pyridine).sub.3 Pt[Ru.sub.3 (CO).sub.12 ], ((C.sub.6 H.sub.5).sub.3 P).sub.2 Pt[Ir(CO).sub.3 P (C.sub.6 H.sub.5).sub.3 ].sub.2, ((C.sub.6 H.sub.5).sub.3 P).sub.2 Rh(CO)[Ir(CO).sub.4 ], and (pyridine).sub.2 Pt[Rh(CO).sub.2 (P(C.sub.6 H.sub.5).sub.3).sub.2 ].sub.2.These new heteronuclear noble metal cluster complexes are useful as supported mixed noble metal catalyst precursors. These new cluster complexes, of known stoichiometry, are deposited on anhydrous refractory inorganic oxide or carbon supports and then reduced resulting in the formation of a supported heteronuclear noble metal catalyst having the same metals stoichiometry as the starting cluster complexes. In this way, precise control can be exercised over the ratio and distribution of multiple metal components in a mixed noble metal catalyst. The usage of preformed heteronuclear noble metal cluster complexes as supported mixed metal catalyst precursors maximizes surface alloy formation and also yields unique mixed-metal cluster structures on the support surface.

    摘要翻译: 首次发现并合成了新的异核贵金属簇络合物。 这些配合物是(吡啶)2 Pt [Ir 6(CO)15],(吡啶)2 Pt [Ir 2(CO)7],(吡啶)3 Pt [Ru 3(CO)12],((C 6 H 5)3 Pt) [Ir(CO)3P(C6H5)3] 2,((C6H5)3P)2Rh(CO)[Ir(CO)4]和(吡啶)2 Pt [Rh(CO)2(P(C6H5) 2] 2。 这些新的异核贵金属簇络合物可用作负载型混合贵金属催化剂前体。 这些具有已知化学计量的新的簇络合物沉积在无水耐火无机氧化物或碳载体上,然后还原,形成具有与起始簇络合物相同的金属化学计量的负载的异核贵金属催化剂。 以这种方式,可以对混合贵金属催化剂中多种金属组分的比例和分布进行精确控制。 使用预制的异核贵金属簇络合物作为负载混合金属催化剂前体使表面合金形成最大化,并在支撑表面上产生独特的混合金属簇结构。