Method of producing molecular profiles of isoparaffins by low emitter current field ionization mass spectrometry
    5.
    发明授权
    Method of producing molecular profiles of isoparaffins by low emitter current field ionization mass spectrometry 失效
    通过低发射极电流场电离质谱法生产异链烷烃的分子谱的方法

    公开(公告)号:US07671328B2

    公开(公告)日:2010-03-02

    申请号:US11702830

    申请日:2007-02-06

    IPC分类号: B01D59/44 H01J49/00

    CPC分类号: G01N27/62

    摘要: The present invention is devoted to an analytical method for directly determining carbon number and molecular weight distributions of isoparaffin mixtures. The analytical means uses low in-scan emitter-current field-ionization mass spectroscopy to substantially reduced or eliminated molecular ion fragmentation for isoparaffins, which allows direct measurement of isoparaffin molecular ions for their distributions. The analytical means is capable of directly characterizing isobutane to C50+ isoparaffins, covering naphtha to gas oil ranges.

    摘要翻译: 本发明致力于直接测定异构烷烃混合物的碳数和分子量分布的分析方法。 分析手段使用低扫描发射极 - 电流场电离质谱来显着减少或消除异链烷烃的分子离子断裂,这允许直接测量异链烷烃分子离子用于其分布。 分析手段能够将异丁烷直接表征为C50 +异构烷烃,将石脑油覆盖至瓦斯油范围。

    Oil recovery method using sulfonate surfactants derived from extracted
aromatic feedstocks
    7.
    发明授权
    Oil recovery method using sulfonate surfactants derived from extracted aromatic feedstocks 失效
    使用从提取的芳香原料衍生的磺酸盐表面活性剂的油回收方法

    公开(公告)号:US4452708A

    公开(公告)日:1984-06-05

    申请号:US349952

    申请日:1982-02-18

    IPC分类号: C09K8/584 E21B43/22

    CPC分类号: C09K8/584 Y10S507/938

    摘要: An oil recovery method is disclosed which uses a particular class of alkylaryl sulfonate surfactants. The surfactants are derived from an extracted aromatic feedstock consisting essentially of benzene, toluene, xylenes, and lesser amounts of ethylbenzene, trimethylbenzenes, and tetramethylbenzenes. The aromatic feedstock is then alkylated with linear .alpha.-olefins to favor second-carbon attachment, and sulfonated to result in surfactants having high oil solubilization parameters and whose phase behavior is substantially independent of temperature over 120.degree.-250.degree. Fahrenheit.

    摘要翻译: 公开了使用特定类型的烷基芳基磺酸盐表面活性剂的油回收方法。 表面活性剂衍生自基本上由苯,甲苯,二甲苯和较少量的乙苯,三甲基苯和四甲基苯组成的提取的芳族原料。 然后将芳族原料用直链α-烯烃烷基化以有利于第二碳连接,并磺化以产生具有高油溶性参数的表面活性剂,其相位行为基本上与120-250华氏度的温度无关。