Concerning the Deep Catalytic Oxidation of Methanol in Aqueous Media
M. V. BRENCHUGINA1, A. S. BUYNOVSKIY1 and A. S. KNYAZEV2
1 Seversk Technological Institute, Branch State Budget Educational Institution of Higher Professional Education “National Research Nuclear University MEPhl”,
Pr. Kommunisticheskiy 65, Seversk, Tomskaya obl. 636036 (Russia)
bmv@vtomske.ru
2 Tomsk State University,
Pr. Lenina 36, Tomsk 634050 (Russia)
Keywords: catalysis, deep oxidation, methanol, water, gas condensate deposits
Pages: 129–134
Abstract
Deep methanol oxidation in aqueous solutions with the methanol concentration lower than 2.0 mass % within temperature range 250–450 °С is considered. Experiments were carried out with industrial catalysts based on aluminum oxide with active components such as platinum as well as copper, chromium, iron, and magnesium oxides. The minimum concentration of methanol after oxidation (≤3 mg/dm3) was achieved for CuO/Cr2O3/Al2O3 catalyst. Most likely, the methanol oxidation on the catalysts of this type proceeds according to the Mars–van Krevelen mechanism, wherein reactive oxygen species responsible for deep oxidation are presented by the lattice oxygen of the catalyst. TPD spectra were obtained for oxygen, methanol, water, as well as for methanol and water in simultaneous presence, within the temperature range of 100–950 °С.
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