Abstract
This study emphasizes on using different types of reactants to obtain compounds belonging to the same class, alkylpyrazines. The mechanism of these reactions is one of cyclo-dehydrogenation on the surface of a mixed oxide catalyst, e.g. ZnAl. Different types of reactions have been performed, using diamines, hydroxyamines or a diamine and a diol. The raw materials used and the various reaction parameters like temperature, space velocity and molar ratio of the reactants present a significant influence in the conversion and selectivity values. The conversion of reactants was quasi-total while the selectivity of the yielded products varies from 95.9% to a complex mixture of products. The ZnAl catalyst is thermally stable with the catalytic sites easily regenerated.
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This work was supported by the Executive Agency for Higher Education, Research, Development and Innovation (UEFISCDI): PN-III-P2-2.1-PED-2019-4561.
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Teodorescu, F., Slabu, A.I. & Pavel, O.D. Vapor phase synthesis of alkylpyrazines over ZnAl mixed oxide derived from layered double hydroxides obtained by the mechanochemical method. Reac Kinet Mech Cat 133, 863–877 (2021). https://doi.org/10.1007/s11144-021-02013-9
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DOI: https://doi.org/10.1007/s11144-021-02013-9