Formation of complex organic molecules in methanol and methanol–carbon monoxide ices exposed to ionizing radiation – a combined FTIR and reflectron time-of-flight mass spectrometry study
作者:Surajit Maity、Ralf I. Kaiser、Brant M. Jones
DOI:10.1039/c4cp04149f
日期:——
photoionization at 10.49 eV. Infrared spectroscopic analysis of the processed ice systems resulted in the identification of simple molecules including the hydroxymethyl radical (CH2OH), formyl radical (HCO), methane (CH4), formaldehyde (H2CO), carbon dioxide (CO2), ethylene glycol (HOCH2CH2OH), glycolaldehyde (HOCH2CHO), methyl formate (HCOOCH3), and ketene (H2CCO). In addition, ReTOF mass spectrometry of
这项研究报道了在5.5 K下以高能电子形式暴露于电离辐射中的甲醇和甲醇-一氧化碳冰的辐射诱导化学过程,以及随后的程序升温脱附。通过固态的红外光谱在线和原位监测复杂有机分子的内源性形成,并使用高灵敏度的反射电子飞行时间(ReTOF)质谱和10.49的单光电离,通过程序升温解吸(TPD)进行辐照后进行监测。 eV。对制冰系统的红外光谱分析导致鉴定出简单分子,包括羟甲基(CH 2 OH),甲酰基(HCO),甲烷(CH 4),甲醛(H 2 CO),二氧化碳(CO 2),乙二醇(HOCH 2 CH 2 OH),乙醇醛(HOCH 2 CHO),甲酸甲酯(HCOOCH 3)和乙烯酮(H 2 CCO)。此外,在程序编程的解吸后,升华分子的ReTOF质谱法明确确定了几种封闭壳含C / H / O的有机物,包括乙烯酮(H 2 CCO),乙醛(CH 3 COH),乙醇(C 2 H 5 OH),二甲基醚(CH 3