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Titanium Dioxide as a Packing Material for Micro-Packed Column in Gas Chromatography

机译：二氧化钛作为气相色谱法为微包装柱的包装材料

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A gas chromatographic micro-packed column prepared with titanium dioxide (TiO_(2)) particles was developed. This study reports the fundamental retention behavior of the column for several organic and inorganic gaseous compounds, and quantitatively analyzes the high-temperature degradation behavior of the injected organic compounds. The anatase TiO_(2) particles were prepared by hydrolysis of titanium (IV) isopropoxide. The particle size was classified as 150 – 180 μm. The micro-packed column was prepared by packing the classified TiO_(2) particles into a stainless steel capillary of inner diameter of 1.0 mm and length of 1.0 m. The TiO_(2) micro-packed column was connected to a conventional gas chromatograph equipped with a flame ionization detector or a thermal conductivity detector. The column showed high retentivity for carbon dioxide and also for organic compounds, achieving a baseline separation of methane and ethane. The TiO_(2) packed column was highly thermally stable, with a temperature limit above 400°C. Above 300°C, the analytes injected into the column were thermally degraded by catalytic combustion of TiO_(2) under N_(2) carrier gas. On the other hand, the degradation was obtained above 200°C using air as the carrier gas.
机译：用二氧化钛（TiO_（2））颗粒制备的气相色谱微包柱。该研究报告了几种有机和无机气态化合物的柱的基本保留行为，并定量分析注入的有机化合物的高温降解行为。通过水解钛（IV）异丙氧化物制备锐钛矿TiO_（2）颗粒。粒度归类为15​​0-180μm。通过将分类的TiO_（2）颗粒填充成1.0mm的不锈钢毛细管，通过将分类的TiO_（2）颗粒包装为1.0mm和长度为1.0μm的不锈钢毛细管制备微包装柱。 TiO_（2）微包柱连接到配备有火焰电离检测器或导热探测器的常规气相色谱仪。该柱对二氧化碳的保持性高，也适用于有机化合物，实现甲烷和乙烷的基线分离。 TiO_（2）包装柱具有高度热稳定性，温度限制在400°C以上。在300℃以上，注射到塔中的分析物通过在N_（2）载气下的TiO_（2）的催化燃烧热降解。另一方面，使用空气作为载气将降解在200℃以上获得。

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