Kinetics of Heterogeneous Reactions

Studies of leaf litter as a sorption material with respect to oil at various temperatures have been carried out. It has been revealed that with process temperature increasing, the samples sorption capacity decreases. The oil sorption mechanism has been studied. It has been shown that the active sorption time was in the interval from 60 to 600 seconds. It has been proved that at the time of oil and sorption material contact for more than 600 seconds, the desorption process began. Kinetic dependencies of oil absorption by the proposed sorption material have been constructed and analyzed. The reaction order determination by a graphic method has showed that obtained functions with a high degree of correlation can be attributed to first-order heterogeneous reactions. Have been calculated thermodynamic parameters confirming the absence of a chemical reaction between oil and leaf litter. The carried out researches determine the most acceptable parameters of oil sorption by material based on leaf litter.

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Kinetics of heterogeneous reactions of ozone with representative PAHs and an alkene at the air–ice interface at 258 and 188 K

Environmental Science Processes & Impacts ◽

10.1039/c3em00665d ◽

2014 ◽

Vol 16 (4) ◽

pp. 770-776 ◽

Cited By ~ 2

Author(s):

D. Ray ◽

H. Lišková ◽

P. Klán

Keyword(s):

Heterogeneous Reactions ◽

Kinetics Of

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Chemical kinetics at solid-solid interfaces

Pure and Applied Chemistry ◽

10.1351/pac200072112137 ◽

2000 ◽

Vol 72 (11) ◽

pp. 2137-2147 ◽

Cited By ~ 3

Author(s):

Hermann Schmalzried

Keyword(s):

Solid State ◽

Moving Boundaries ◽

Heterogeneous Reactions ◽

Solid State Reactions ◽

Nonlinear Phenomena ◽

Two Dimensional ◽

Interface Morphology ◽

Interface Kinetics ◽

Reaction Media ◽

Kinetics Of

The kinetics of solid-solid interfaces controls in part the course of heterogeneous reactions in the solid state, in particular in miniaturized systems. In this paper, the essential situations of interface kinetics in solids are defined, and the basic formal considerations are summarized. In addition to the role interfaces play as resistances for transport across them, they offer high diffusivity paths laterally and thus represent two-dimensional reaction media. Experimental examples will illustrate the kinetic phenomena at static and moving boundaries, including problems such as exchange fluxes, boundary-controlled solid-state reactions, interface morphology, nonlinear phenomena connected with interfaces, and reactions in and at boundaries, among others.

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