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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Molecular Activation by Surface Coordination: Nwe Model for HCl Reactivity on Water-Ice Polar Stratospheric Clouds
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Molecular Activation by Surface Coordination: Nwe Model for HCl Reactivity on Water-Ice Polar Stratospheric Clouds

机译：通过表面配位的分子活化：Nwe模型在水冰极平流层云上的HCl反应性

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摘要

Results of studies of the uptake of HCl by the deuterated analogue of protonated water clusters are reported. The successive uptake of nHCl n = 1-4 is observed, n = 2-4 appearing in a stepwise manner with a ratio of 6:1 D_2O/HCl for the bimolecular reaction products. This primary uptake scheme is observed over a range of pressures (0.24-0.46 Torr) and temperatures (130-170 K). However, for increased flows of HCl, enhanced uptake is observed at a lower ration of D_2O/HCl, a trend that is effected by an increased buffer gas pressure. Two distinctly dominant mechanisms of HCl uptake are operative: the bimolecular uptake of HCl in a 6:1 ratio with water and a subsequent association mechanism of HCl binding to water in a 3:1 ratio. The atmospheric implications are discussed along with a proposed molecular activation by surface coordination (MASC) model for HCl uptake and subsequent reactivity on polar stratospheric clouds.
机译：报道了质子化水簇的氘代类似物吸收HCl的研究结果。观察到连续吸收nHCl n = 1-4，对于双分子反应产物，n = 2-4逐步出现，比率为6：1 D_2O / HCl。在压力（0.24-0.46 Torr）和温度（130-170 K）的范围内观察到该主要吸收方案。但是，对于增加的HCl流量，在较低的D_2O / HCl比率下观察到吸收增加，这是由于缓冲气体压力增加而引起的趋势。 HCl吸收的两个截然不同的主要机理是有效的：HCl与水以6：1的双分子吸收以及随后HCl以3：1的比例与水结合的缔合机理。讨论了对大气的影响以及拟议的通过表面配位的分子活化（MASC）模型来吸收HCl以及随后在极地平流层云上的反应性。

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