Kinetics on biodiesel oxidation by air oxygen catalyzed by molybdenum complex

Sergey Yudaev, Elena Ivashkina, Anna Cherepanova, Mikhail Voronov, Valentin Sapunov

Research output: Contribution to journalArticle

Abstract

The proposed method of processing fuels derived from bio-raw materials allows for obtaining products of organic synthesis. The simplified scheme of reactions occurring in the system of oxidizing biodiesel and mathematic description were developed, and they are suitable for non-catalytic as well as Mo-catalyzed oxidation of biodiesel by air oxygen. Kinetic regularities of the process of biodiesel aerobic oxidation were studied by using this kinetic model. It has been found out that Mo-catalyst accelerates formation of all final products including epoxides by means of interaction with peroxyl radicals, i.e. the traditional Sharpless epoxidation mechanism doesn't match to this case. General parameters of the process, such as air supply speed and temperature do not impact on the character of components concentration curves. Influence of the composition of FAME on the epoxidation selectivity was revealed. The growth of epoxide formation selectivity (up to 85% at 50% - conversion of C-C - double bonds) is observed when mono-/poly-unsaturated compounds ratio is increasing. Thus, fatty acid methyl esters with different unsaturation degree demonstrate tendency to interact in various types of reactions.

Original languageEnglish
Pages (from-to)965-972
Number of pages8
JournalPetroleum and Coal
Volume61
Issue number5
Publication statusPublished - 2019

Keywords

  • Epoxidation
  • Fatty acid methyl esters
  • Hydroperoxides
  • Mathematical modeling

ASJC Scopus subject areas

  • Energy(all)

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    Yudaev, S., Ivashkina, E., Cherepanova, A., Voronov, M., & Sapunov, V. (2019). Kinetics on biodiesel oxidation by air oxygen catalyzed by molybdenum complex. Petroleum and Coal, 61(5), 965-972.