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    Catalyst for metathetic reactions of olefins
    1.
    发明授权
    Catalyst for metathetic reactions of olefins 失效
    催化剂用于烯烃的复分解反应

    公开(公告)号：US5372982A

    公开(公告)日：1994-12-13

    申请号：US913723

    申请日：1992-07-16

    申请人： Jukka Hietala ,  Pekka Knuuttila ,  Arla Kytokivi

    发明人： Jukka Hietala ,  Pekka Knuuttila ,  Arla Kytokivi

    IPC分类号： B01J27/10 ,  B01J23/30 ,  B01J37/02 ,  C07B61/00 ,  C07C6/04 ,  C07C11/02 ,  B01J27/138 ,  B01J21/08 ,  B01J27/135

    CPC分类号： B01J23/30 ,  B01J37/0238 ,  C07C6/04 ,  C07C2521/08 ,  C07C2521/14 ,  C07C2523/30

    摘要： The present invention concerns a heterogeneous catalyst particularly suited to the metathetic reactions of olefins in liquid or gas phase. Such a catalyst generally includes catalytically active species of tungsten on an inorganic support. The catalyst in accordance with the invention is prepared by vaporizing a precursor of tungsten, such as tungsten oxychloride or hexachloride and then routing the vapor of the tungsten-containing reagent into a reaction space, where the vapor is brought to interaction with the support material at approximately 160.degree. to 500.degree. C. The vapor pressure of the tungsten-containing reagent is kept sufficiently high, and the duration of interaction with the support sufficiently long, to keep the amount of the reagent at least equal to the number of available bonding sites of the support, whereby the bonding of the tungsten-containing reagent to the support surface is determined by the surface properties of the support. The catalyst can be posttreated after its preparation to modify its catalytic activity. The specific activity of the catalytic metal species of the catalyst according to the invention is high.

    摘要翻译： 本发明涉及一种特别适用于液相或气相中烯烃的互变异构反应的非均相催化剂。 这种催化剂通常包括无机载体上的钨的催化活性物质。 根据本发明的催化剂通过将钨的前体如氯化氧化铈或六氯化碳蒸发，然后将含钨试剂的蒸气导入反应空间来制备，其中蒸气与载体材料相互作用 约160℃至500℃。含钨试剂的蒸汽压力保持足够高，并且与载体的相互作用持续时间足够长，以保持试剂的量至少等于可用结合位点的数量 由此通过载体的表面性质来确定含钨试剂与载体表面的结合。 催化剂在其制备后可以进行后处理以改变其催化活性。 根据本发明的催化剂的催化金属种类的比活性很高。