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Registration Number

0220U101640, 0117U007175 , R & D reports

Title

Development of the feedstock-flexible technology of acrylic monomers production

Head

Nebesnyi Romаn V., Кандидат технічних наук

Registration Date

17-02-2020

Organization

Lviv Polytechnic National University

Description

A new highly selective catalyst has been developed for the implementation of oxidative condensation and oxidative esterification processes B–P–W–V–Ох/SiO2 on an alternative fumed silica support with a specific surface area of 90 - 200 m2/g, size of pores 10 - 20 nm, volume of pores 0.5 - 1.0 cm3/g, that not contains micropores or mesopores of less than 8 nm in size. Se-containing catalysts for the reaction of oxidative esterification of acrolein with alcohols with the formation of acrylic acid and its esters on a microgel polymeric support have been developed. The use of Se-microgels allows to obtain acrylic acid with a yield of 91.0% and a selectivity of 96.8%; and methyl acrylate with acrylic acid with a total yield of 89.1% and a total selectivity 99.1%. The kinetic regularities of the reactions have been investigated. Mathematical models of oxidative condensation and oxidative esterification reactions have been developed, the rate constants of kinetic equations and their activation energies have been calculated. The technological parameters of the processes of obtaining acrylic acid and its esters have been optimized. With gas-phase condensation of acetic acid with formaldehyde in acrylic acid, the yield of acrylic acid was reached 60.1% with the selectivity of its formation 94.2%.  

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Voronchak Taras O.
Kubitska Iryna I.
Nebesna Yuliia V.
Orobchuk Oksana M.
Pavliuk Anastasiia S.
Reutskyi Volodymyr V.
Kharandiuk Tetiana V.