Automated preparative gas chromatograph
    3.
    发明授权
    Automated preparative gas chromatograph 失效
    自动制备气相色谱仪

    公开(公告)号:US5006315A

    公开(公告)日:1991-04-09

    申请号:US515295

    申请日:1990-04-27

    摘要: A preparative-scale gas chromatographic system has conduits and valves adapted for analysis and collection of low volatility effluent. An injection site is provided for alternately supplying liquid solvent for removing condensed effluent from the system when the flow of effluent is terminated. Conduits are joined within the thermal conductivity detector of the system to prevent condensation at the joint. Conduits are provided with copper jackets which are coupled to sources of thermal energy to prevent condensation within the conduits. A trap filter provides backpressure in the collection system wherein recovery of condensed effluent in the filter is facilitated by the smooth surface of the filter.

    摘要翻译: 制备型气相色谱系统具有适于分析和收集低挥发性流出物的导管和阀。 提供注射部位,用于当流出物的流动终止时交替地供应用于从系统中除去浓缩流出物的液体溶剂。 导管连接在系统的热导率检测器内,以防止接头处的冷凝。 导管配有铜夹套,铜套与热能源相连,以防止导管内的冷凝。 捕集过滤器在收集系统中提供背压,其中通过过滤器的平滑表面促进过滤器中的浓缩流出物的回收。

    Selective chromatographic process using an ion-exchanged, dehydrated
chabazite adsorbent
    4.
    发明授权
    Selective chromatographic process using an ion-exchanged, dehydrated chabazite adsorbent 失效
    使用离子交换的脱水菱沸石吸附剂进行选择性色谱法

    公开(公告)号:US4747854A

    公开(公告)日:1988-05-31

    申请号:US66789

    申请日:1987-06-25

    IPC分类号: B01J20/18 B01D53/04

    CPC分类号: B01J20/186 Y10S95/902

    摘要: The present invention relates to a process for the selective adsorption and separation of one or more constituents from a gas stream in a gas chromatograph, wherein the gas stream is contacted with a dehydrated chabazite adsorbent having a residual water content of less than 1.5 wt % and having at least 50% of any exchangeable ion capacity exchanged with a polyvalent metal cation. The process of the present invention both anticipates separation of the constituents due to either a difference in the heats of adsorption of the constituents or a size exclusion effect.

    摘要翻译: 本发明涉及在气相色谱仪中从气流中选择性吸附和分离一种或多种成分的方法,其中气流与残留含水量小于1.5重量%的脱水菱沸石吸附剂接触, 具有与多价金属阳离子交换的任何可交换离子容量的至少50%。 本发明的方法既预期由于组分的吸附热差异或尺寸排阻效应导致组分的分离。