Transient and steady-state reactor operation

PD Dr. Evgenii Kondratenko

The integral catalytic performance of a catalytic material in the oxidative conversion of alkanes can be also improved via reaction engineering, e.g. operation under non steady-state conditions has some advantages over steady-state operation. The application of another oxidant improves the catalytic performance of some reaction processes, too. For the first time, we demonstrated for the oxidative dehydrogenation of propane (ODP) over vanadium-[1, 2], and iron- [3] based catalytic materials that not only direct propane oxidation but also consecutive propene oxidation to carbon oxides are significantly inhibited, when O2 is replaced by N2O. Two important conclusions about the role of O2 and N2O in the ODP reaction were derived: i) the ability of oxidant for reoxidation of reduced VOx species; ii) the nature of selective and non-selective oxygen species.

References

  1. E.V. Kondratenko, M. Cherian, M. Baerns, D. Su and R. Schlög, X. Wang and I. E. Wachs, Journal of Catalysis, 234 (2005) 131-142.
  2. E.V. Kondratenko , O. Ovsitser, J. Radnik, M. Schneider, R. Kraehnert, U. Dingerdissen, Applied Catalysis A, 319 (2007) 98-110.
  3. E.V. Kondratenko, and J. Pérez-Ramírez, Applied Catalysis A: General, 267 (2004) 181-189.