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    • 2. 发明申请
    • METALLIC COMPOUND FIXED TO A SUPPORT, METHOD FOR PRODUCTION AND USE OF SAID COMPOUND IN HYDROCARBON METATHESIS REACTIONS
    • 金属化合物固定到支持物上,生产方法和使用所述化合物在烃类反应中的反应
    • WO2004089541A2
    • 2004-10-21
    • PCT/FR2004000730
    • 2004-03-24
    • CPE LYON FCRBASSET JEAN-MARIECOPERET CHRISTOPHESOULIVONG DARAVONGTAOUFIK MOSTAFATHIVOLLE-CAZAT JEAN
    • BASSET JEAN-MARIECOPERET CHRISTOPHESOULIVONG DARAVONGTAOUFIK MOSTAFATHIVOLLE-CAZAT JEAN
    • B01J31/12B01J37/02B01J37/18C07C6/10C08L61/06B01J31/00
    • C07C6/10B01J31/121B01J37/0209B01J37/18C07C2521/04C07C2531/12C08L61/06
    • The invention relates to a supported metal compound, comprising a support made from aluminium oxide to which a tungsten hydride is grafted. The support may be selected from the homogeneous supports with a composition based on aluminum oxide and from heterogeneous supports made from aluminium oxide with aluminum oxide essentially on the surface of said support. The support may in particular comprise aluminium oxide, mixed aluminium oxides and modified aluminium oxides particularly comprising one or more elements of groups 15 to 17 of the periodic table of the elements, such as phosphorus, sulphur, fluorine or chlorine. A support made from porous, non-porous or mesoporous aluminas is preferred. The degree of oxidation of the tungsten may have a value of from 2 to 6. The tungsten atom is generally bonded to one or several hydrogen atoms and optionally to one or several hydrocarbon groups. According to the invention, the compound may be prepared by a dispersion step and grafting of a tungsten organometallic precursor to the support made from aluminium oxide then hydrogenation of the resulting product. The product may be used as catalyst in reactions of cleavage and recombination of hydrocarbons, particularly in hydrocarbon metathesis reactions most particularly of alkanes. The product has a surprising, extremely high catalytic activity in this type of reaction and in particular, a high selectivity for the formation of n-alkanes with relation to iso-alkanes.
    • 本发明涉及一种负载型金属化合物,其包含由氢氧化铝接枝到其上的氧化铝制成的载体。 载体可以选自具有基于氧化铝的组合物的均质载体和基本上来自氧化铝和氧化铝的不均匀载体,基本上在所述载体的表面上。 载体尤其可以包含氧化铝,混合氧化铝和改性氧化铝,其特别包含元素周期表第15至17族的一个或多个元素,例如磷,硫,氟或氯。 由多孔,无孔或中孔氧化铝制成的载体是优选的。 钨的氧化度可以为2至6的值。钨原子通常与一个或多个氢原子以及任选地与一个或多个烃基键合。 根据本发明,该化合物可以通过分散步骤制备并将钨有机金属前体接枝到由氧化铝制成的载体上,然后氢化所得产物。 该产物可用作烃裂解和重组反应的催化剂,特别是在烃类复分解反应中,最特别是在烷烃中。 该产物在这种类型的反应中具有令人惊讶的极高的催化活性,特别是对于与异构烷烃相关的正构烷烃的形成具有高选择性。