发明授权
- 专利标题： Method of producing molecular profiles of isoparaffins by low emitter current field ionization mass spectrometry
- 专利标题（中）： 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
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申请号： US11702830申请日： 2007-02-06
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公开(公告)号： US07671328B2公开(公告)日： 2010-03-02
- 发明人: Chang Samuel Hsu , Gary J Dechert , Haven S. Aldrich , Gerald D. Dupre
- 申请人： Chang Samuel Hsu , Gary J Dechert , Haven S. Aldrich , Gerald D. Dupre
- 申请人地址： US NJ Annandale
- 专利权人： ExxonMobil Research and Engineering Company
- 当前专利权人： ExxonMobil Research and Engineering Company
- 当前专利权人地址： US NJ Annandale
- 代理商 Paul E Purwin; Liza Montalvo
- 主分类号： B01D59/44
- IPC分类号： B01D59/44 ; H01J49/00
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.