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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Studies of HBr Uptake on Ice Films at 188 K
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Studies of HBr Uptake on Ice Films at 188 K

机译：188 K在冰膜上吸收HBr的研究

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摘要

The interaction of HBr with ice films has been studied in a fast-flow reactor, and the formation of HBr centre dot 3H_2O and HBr centre dot 2H_2O near the ice film surface was determined at 188 K. The existence of the hydrates was further verified by the construction of a low-temperature HBr-ice phase diagram under the experimental conditions. Hydrate formation is a critical process in understanding the higher HBr uptake on ice films and the heterogeneous reaction mechanism involving HBr on the ice surface. The effects of total pressure and ice film thickness on HBr uptake were also investigated. The co-uptake of HBr and HCl showed that the HBr uptake was in general more efficient than that of HCl. This study provides the detailed thermodynamic properties of HBr on ice at the pressure range of 10~(-8)-10~(-5) Torr and 180-220 K.
机译：在快速流动反应器中研究了HBr与冰膜的相互作用，并在188 K下确定了冰膜表面附近HBr中心点3H_2O和HBr中心点2H_2O的形成。通过进一步验证了水合物的存在在实验条件下构建低温HBr-ice相图。水合物的形成是理解冰膜上更高的HBr吸收和冰表面HBr异质反应机理的关键过程。还研究了总压力和冰膜厚度对HBr吸收的影响。 HBr和HCl的共同摄入表明，通常HBr的吸收效率高于HCl。这项研究提供了HBr在10〜（-8）-10〜（-5）Torr和180-220 K压力范围内在冰上的详细热力学性质。

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