Catalytic hydroformylation
    5.
    发明授权
    Catalytic hydroformylation 失效
    催化加氢甲酰化

    公开(公告)号:US4200592A

    公开(公告)日:1980-04-29

    申请号:US916535

    申请日:1978-06-19

    CPC分类号: C07C45/50

    摘要: This invention relates to catalytic hydroformylation reactions, for example the hydroformylation of internal olefins. In particular the invention relates to a process for the production of a straight chain aldehyde from an olefin comprising reacting the said olefin in a liquid reaction medium with hydrogen and carbon monoxide at a total pressure of less than 500 psig in the presence of a complex of Rh(I) in solution in the said medium and a homogeneous co-catalyst dissolved in said reaction medium comprising a co-ordination complex of a transition metal other than rhodium selected from Group 6 or Group 8 of the Periodic Table.The transition metal is, preferably, selected from the group consisting of Cr, Mo, W, Fe, Co, Pd, Pt and Ru.

    摘要翻译: 本发明涉及催化加氢甲酰化反应,例如内烯烃的加氢甲酰化。 特别地,本发明涉及从烯烃生产直链醛的方法,包括在液体反应介质中的所述烯烃与氢和一氧化碳的总压力小于500psig的条件下,在 在所述介​​质中的溶液中的Rh(I)和溶解在所述反应介质中的均相助催化剂,其包含选自元素周期表第6族或第8族的铑以外的过渡金属的配位络合物。 过渡金属优选选自Cr,Mo,W,Fe,Co,Pd,Pt和Ru。

    Current limiting device for electromagnetic coil employing gap
containing superconductive shield
    8.
    发明授权
    Current limiting device for electromagnetic coil employing gap containing superconductive shield 失效
    电磁线圈限流装置采用含超导屏蔽的间隙

    公开(公告)号:US5355275A

    公开(公告)日:1994-10-11

    申请号:US809908

    申请日:1991-12-20

    摘要: A variable impedance device comprises a coil (10) and an associated magnetic circuit (16) having a gap receiving a plate (20) of superconducting material which acts as a shield or barrier so that, while the plate (20) is in its superconducting state, magnetic flux is caused to traverse the gap via pathways substantially greater in length than the width of the gap. If a large current is passed through the coil (10), the plate (20) becomes resistive thereby presenting a substantially increased impedance to the current. The device may be used in current limiting applications, or other applications where a variable impedance is required.

    摘要翻译: 可变阻抗装置包括线圈(10)和相关联的磁路(16),该磁路具有接纳超导材料的板(20)的间隙,其作为屏蔽或屏障,使得当板(20)处于超导 状态下,使磁通量通过比间隙的宽度大得多的路径穿过间隙。 如果大电流通过线圈(10),则板(20)变得电阻性,从而对电流呈现显着增加的阻抗。 该器件可用于限流应用或需要可变阻抗的其他应用中。