Quantitative production of H2 by pyrolysis of gas chromatographic effluents
Quantitative production of H2 by pyrolysis of gas chromatographic effluents
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DOI：
10.1021/ac980248v
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发表时间：
1998-12-15
影响因子：
7.4
通讯作者：
Hayes, JM
中科院分区：
文献类型：
--
作者：
Burgoyne, TW;Hayes, JM
氢气可以从纳摩尔量的有机Hin连续流动的气流中定量产生。这里描述的系统适用于同位素比监测质谱系统，并基于由加热至 1450 摄氏度的石墨化氧化铝管组成的热解反应器，在高于 750 摄氏度的温度下，甲烷作为中间产物形成，但是，对于所有测试的分析物，H-2 的产量在 1430 至 1460 摄氏度之间的温度下是定量的，前提是在反应器中的停留时间大于300 毫秒对同系正烷烃系列（C-15 至 C-30）的所有组分都获得了 H-2 的定量产率。低分子量醇的分析表明，O-结合的 H 也定量转化为 H-2，因此，如果形成 H2O，则定量还原为 H-2。
Hydrogen gas can be produced quantitatively from nanomole amounts of organic Hin continuously flowing gas streams. The system described here is suitable for use in isotope-ratio-monitoring mass spectrometric systems and is based on a pyrolysis reactor consisting of a graphitized alumina tube heated to 1450 degrees C, Methane forms as an intermediate product at temperatures above 750 degrees C, but, for all tested analytes, yields of H-2 were quantitative at temperatures between 1430 and 1460 degrees C, provided residence times in the reactor were greater than 300 ms. Quantitative yields of H-2 were obtained for all components of a homologous series of n-alkanes (C-15 to C-30) Analyses of low-molecular-weight alcohols demonstrated that O-bound H was also quantitatively converted to H-2 and, thus, that H2O, if formed, was quantitatively reduced to H-2.