Current limiting device for electromagnetic coil employing gap
containing superconductive shield
    5.
    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。

    Catalytic hydroformylation
    9.
    发明授权
    Catalytic hydroformylation 失效
    催化加氢甲酰化

    公开(公告)号:US4200591A

    公开(公告)日:1980-04-29

    申请号:US916534

    申请日:1978-06-19

    CPC分类号: C07C45/50

    摘要: This invention relates to catalytic 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 said olefin in a liquid reaction medium with hydrogen and carbon monoxide in the presence of a complex of Rh(I) in solution in the said medium as catalyst and a heterogeneous co-catalyst comprising a catalytic metal deposited upon a solid particulate support.

    摘要翻译: 本发明涉及内烯烃的催化加氢甲酰化。 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在所述介质中的溶液中的Rh(I)络合物存在下反应 作为催化剂和包含沉积在固体颗粒载体上的催化金属的非均相助催化剂。