Method for preparing propylene oxide
    1.
    发明授权
    Method for preparing propylene oxide 失效
    制备丙烯氧化物的方法

    公开(公告)号:US3818051A

    公开(公告)日:1974-06-18

    申请号:US27118772

    申请日:1972-07-12

    CPC分类号: C07D301/06 Y02P20/52

    摘要: A method for preparing propylene oxide by oxidizing propylene with atmospheric oxygen in the presence of oxyfluoride derivatives of molybdenum or tungsten, or mixtures thereof, for example, (Me)2MoO2F4, (Me)2WO2F4 or (Me)3W2O4F7, where Me is NH4, K, Rb or Cs. The oxidation is carried out in organic solvents oxidizable to hydroperoxides, for example ethylbenzene, isobutane and isopentane.

    摘要翻译: 在钼或钨的氟氧化物衍生物或其混合物的存在下,例如(Me)2MoO 2 F 4,(Me)2 WO 2 F 4或(Me)3 W 2 O 4 F 7(其中Me是NH 4),通过用大气氧氧化丙烯来制备环氧丙烷的方法, K,Rb或Cs。 氧化在可氧化成氢过氧化物的有机溶剂中进行,例如乙苯,异丁烷和异戊烷。

    Pulsed vhf radio spectrometer for investigation of nuclear quadrupole resonance in solids
    2.
    发明授权
    Pulsed vhf radio spectrometer for investigation of nuclear quadrupole resonance in solids 失效
    用于调查固体中核四重共振的脉冲甚高频无线电谱仪

    公开(公告)号:US3808518A

    公开(公告)日:1974-04-30

    申请号:US19070271

    申请日:1971-10-20

    IPC分类号: G01R33/44 G01N27/78

    CPC分类号: G01R33/441

    摘要: A pulsed VHF radio spectrometer for the invenstigation of nuclear quadrupole resonance (NQR) in solids, in which the tuning arrangements of the anode and grid tanks in a double-tank r.f. pulse oscillator are kinematically linked to each other and to the tuning arrangement of the tuned circuit of a local oscillator by means of a drive having a programmer. The latter is made such that the grid tank in the r.f. pulse oscillator and the localoscillator tuned circuit are swept in frequency in a predetermined manner. The radio spectrometer disclosed herein has an inductance coil to enclose the solid test specimen, which is electrically connected to the r.f. pulse oscillator through a matching means which matches the impedance of the inductance coil to the impedance of the anode tank in the r.f. pulse oscillator. The circuit parameters of the matching means and the circuit parameters of the inductance coil determine the above-mentioned manner for frequency sweeping.

    摘要翻译: 用于固体中核四极共振(NQR)的混合的脉冲VHF射线分光仪,其中阳极和电池在双槽r.f.中的调谐布置。 脉冲振荡器通过具有编程器的驱动器在运动学上被连接到本地振荡器的调谐电路的调谐装置。 后者被制成使得在r.f. 脉冲振荡器和本地振荡器调谐电路以预定方式扫频。 本文公开的放射分光计具有电感线圈以包围固体试样,其电连接到r.f. 脉冲振荡器通过匹配装置将电感线圈的阻抗与r.f中的阳极罐的阻抗相匹配。 脉冲振荡器。 匹配装置的电路参数和电感线圈的电路参数决定了上述扫频方式。