DESCRIPTION OF INITIAL REACTIONS IN KINETIC MODELING OF LOW-TEMPERATURE OXIDATION OF N-ALKANES

The kinetic dependences of the initial reactions occurring during oxidation of n-alkanes at low temperatures are considered. The kinetic data with the formation of, in particular, cyclic ethers are estimated. The model used allows predicting the experimental data obtained in the static reactor. Improved data on the selectivity of cyclic ethers are obtained in comparison with previous models. It has been shown that under given initial conditions, during the catalytic oxidation of n-alkanes, incomplete oxidation of n-alkanes occurs. Oxidation reactions were carried out at relatively low temperatures using metal-polymer systems including Mn and Ni. During the catalytic oxidation of saturated hydrocarbons with oxygen, alcohols, ketones and acids are predominantly formed. Organic acids occur in isolated cases; the bulk of the n-alkane remains unchanged in the reaction. Practically important dependences of the catalytic oxidation of n-alkanes at low temperatures have been constructed. The influence on the initial reaction rate of the following parameters was taken into account: temperature, oxygen consumption, the mass of catalyst, initial n-alkane concentration, n-alkane concentration as a function of normalized time