Interaction of methanol, acetone and formaldehyde with ice surfaces between 198 
and 223 K

Winkler, A. K.; Holmes, N. S.; Crowley, J. N.

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Interaction of methanol, acetone and formaldehyde with ice surfaces between 198 and 223 K

MPS-Authors

/persons/resource/persons101366

Winkler, A. K.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons101006

Holmes, N. S.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons100898

Crowley, J. N.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Winkler, A. K., Holmes, N. S., & Crowley, J. N. (2002). Interaction of methanol, acetone and formaldehyde with ice surfaces between 198 and 223 K. Physical Chemistry Chemical Physics, 4(21), 5270-5275.

引用: https://hdl.handle.net/11858/00-001M-0000-0014-91BC-B

要旨

The rate and extent of physical adsorption of methanol, acetone and formaldehyde on ice were measured as a function of concentration and temperature. The gas ice interaction was analysed by applying adsorption isotherms to determine temperature dependent Langmuir constants, K(T) and saturation surface coverage, N-max. At low coverage a partitioning constant K-#(T) was derived. The dependence of K-# on temperature is given by K-#(T) = 6.24 x 10(-12) exp(6178/T) cm for methanol and K-#(T) = 1.25 x 10(-10) exp(5575/T) cm for acetone. For formaldehyde a temperature independent expression, K-# = 0.7 cm was derived. From these data adsorption enthalpies DeltaH(ads) of (-46 +/- 7) and (-51 +/- 10) kJ mol(-1) were obtained for acetone and methanol, respectively. The results were used to calculate the equilibrium partitioning of these trace gases to ice surfaces under conditions relevant to the atmosphere.