Kinetics of Methyl Iodide Tribosorption on the Solid-Phase Salt KI |
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Authors: | Shubin A A Dadali Yu V Mitchenko S A |
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Institution: | (1) Donetsk State, University of Economics and Commerce, Donetsk, 83050, Ukraine;(2) Litvinenko Institute of Physicoorganic Chemistry and Coal Chemistry, National Academy of Sciences of Ukraine, Donetsk, 83114, Ukraine |
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Abstract: | It was found that the tribosorption of methyl iodide from the gas phase of a closed reactor onto a matrix of KI is described by the rate equation for a reversible first-order reaction v
g – v
, g = mv
ts
*
exp(– td
D
sp), where v
g and v
, g are, respectively, the current and equilibrium amounts of methyl iodide in the gas phase; v
ts
*
is the equilibrium amount of methyl iodide tribosorbed per gram of salt; m is the mass of potassium iodide; td is a constant, which characterizes the efficiency of tribodesorption ( td = 0.011 ± 0.005 g/J); and D
sp is the specific dose of mechanical energy absorbed by the KI powder. The value of v
ts
*
monotonically increased with increasing equilibrium partial pressure of methyl iodide and reached a maximum value of 25 mol/g. The lower limit of the constant td , which characterizes the efficiency of tribosorption, was estimated at 0.1 g/J. |
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Keywords: | |
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