The kinetics of the formation of oxygen-containing compounds during oxycracking of vacuum gas oil was experimentally studied. The kinetic parameters of the process of formation of oxygen-containing compounds in five target fractions under oxycracking conditions are established: reaction rates, rate constants, reaction orders, activation energies. The average reaction rate of the formation of oxygen-containing compounds in oxycracking products in the first 600 s is limited by the rate of oxidation of the C₁₀–C₁₂ fraction, further from 600 up to 900 s by the oxidation of the C₅–C₉ fraction (during this period, the direction/mechanism of the formation of OCC in this fraction changes), and after 900 s—the fractions C₁–C₄. The presence of the induction period indicates that the formation of oxygen-containing compounds in the C₁–C₄ fraction occurs according to the unbranched chain mechanism, and C₅–C₉ and C₂₂–C₃₀—through the chain with degenerate branching. The combination of experimental and calculated data indicates a joint homogeneous heterogeneous oxycracking mechanism of vacuum gas oil, which excludes the single-valued contribution of only the volume or only the surface of the catalyst. It is shown that under oxycracking conditions the process proceeds both in the kinetic and in the internal transition region, depending on the temperature.

实验研究了真空瓦斯油的氧裂化过程中含氧化合物形成的动力学。确定了在氧裂化条件下以五个目标馏分形成含氧化合物的过程的动力学参数：反应速率，速率常数，反应阶数，活化能。在最初的600 s内，裂化产物中含氧化合物形成的平均反应速率受C ₁₀ –C ₁₂馏分的氧化速率的限制，进一步受C ₅氧化的600至900 s的速率限制–C ₉分数（在此期间，此分数中OCC的形成方向/机理发生了变化），并且在900 s之后—分数C ₁–C ₄。诱导期的存在表明，C ₁ –C ₄馏分中的含氧化合物是根据无支链的机理形成的，而C ₅ –C ₉和C ₂₂ –C ₃₀则是通过带有简并支链的链形成的。实验数据和计算数据的组合表明真空瓦斯油的联合均相非均相裂化机理，该机理不包括仅催化剂体积或表面的单值贡献。结果表明，在氧裂化条件下，取决于温度，该过程既在动力学上又在内部过渡区内进行。