Kinetics of the OCN−and HOCN formation from the HNCO + H2O thermal reaction in interstellar ice analogs
作者： P. Theule , F. Duvernay , A. Ilmane , T. Hasegawa , O. Morata
DOI: 10.1051/0004-6361/201016051
关键词: Physics 、 Physical chemistry 、 Astrochemistry 、 Astrophysics 、 Desorption 、 Interstellar ice 、 Cyanate 、 Kinetics 、 Isocyanic acid 、 Isomerization 、 Fourier transform infrared spectroscopy 、 Space and Planetary Science 、 Astronomy and Astrophysics
摘要: Aims. We study in the laboratory kinetics of low-temperature OCN − and HOCN formation from purely thermal reaction solid HNCO H 2 O. The cyanate ion is an intermediate isomerization process isocyanic acid into cyanic water ice. Methods. reaction, desorption HNCO/OCN /HOCN system using Fourier transform infrared spectroscopy. Results. Activation energies 26 ± kJ mol −1 (3127 K) 36 1 (4330 are found for + O → 3 reactions respectively. Desorption 37 (4450 40 (4811 measured , Conclusions. present experiment has important implication that alone cannot account observed abundances astronomical IR sources.
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