Sorption of Acetaldehyde and Hexanal in Trace Concentrations on Carbon‐Based Adsorbents
Sorption of Acetaldehyde and Hexanal in Trace Concentrations on Carbon‐Based Adsorbents
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DOI：
10.1002/ceat.201400510
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发表时间：
2015
影响因子：
2.1
通讯作者：
Roman Ortmann;C. Pasel;M. Luckas;Sebastian Kraas;M. Fröba;D. Bathen
中科院分区：
文献类型：
--
作者：
Roman Ortmann;C. Pasel;M. Luckas;Sebastian Kraas;M. Fröba;D. Bathen
吸附过程经常用于从气流中分离痕量的有害和有毒物质。因此，了解这些物质在标准吸附剂上的吸附特性至关重要。研究了活性炭和有序介孔碳基吸附剂（CMK）对氮气流中痕量乙醛和己醛的吸附性能。采用磁悬浮天平和气相色谱-质谱联用仪对吸附过程进行了重量分析和光谱分析。这两种类型的吸附剂显示出比乙醛更高的己醛容量。与介孔CMK相比，活性炭在己醛的解吸方面表现出相当大的差异。
Adsorption processes are frequently applied to separate traces of hazardous and toxic substances from gas streams. Hence, knowledge of sorption characteristics of these substances on standard adsorbents is essential. Sorption of hexanal and acetaldehyde from a nitrogen gas stream in trace concentrations on activated carbon and ordered mesoporous carbon-based adsorbents (CMK) is studied. A magnetic suspension balance and an attached gaschromatograph-mass spectrometer were used to analyze the sorption process both gravimetrically and spectrometrically. Both types of adsorbents show a higher capacity for hexanal than acetaldehyde. The activated carbon exhibits considerable differences in regard to desorption of hexanal compared to the mesoporous CMK.