Temat: styrene epoxidation

Skocz do pozycji: 1.

Tytuł:: Styrene epoxidation over heterogeneous manganese (III) complexes
Autorzy:: Kuźniarska-Biernacka, I.
Lisinska-Czekaj, A.
Czekaj, D.
Alves, M. J.
Fonseca, A. M.
Neves, I. C.
Tematy:: styrene epoxidation
heterogeneous manganes; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/958207.pdf Link otwiera się w nowym oknie
Opis:: The manganes (III) complex functionalised with 2,3-dihydropyridazine has been encapsulated in the supercages of the NaY zeolite using two different procedures, flexible ligand and in situ complex. The parent zeolite and the encapsulated manganese (LTI) complexes were screened as catalysts for styrene oxidation by using t-BOOH as the oxygen source in acetonitrile. Under the optimized conditions, the catalysts exhibited moderate activity with high selectivity to benzaldehyde.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Kinetics studies and mechanism evolution of the epoxidation of styrene over nanoporous Au doped TS-1
Autorzy:: Saxena, S.
Dwivedi, R.
Bhadauria, S.
Chumbhale, V. R.
Prasad, R.
Tematy:: kinetyka
epoksydowanie
Au/TS-1
styren
tlenek styrenu
kinetics
epoxidation
styrene
Styrene Oxide; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/778059.pdf Link otwiera się w nowym oknie
Opis:: A kinetic investigation of the slurry phase epoxidation of styrene with hydrogen peroxide has been carried out, for the first time, over nanoporous Au doped TS-1 catalyst, in a batch reactor, in the temperature range of 313-333 K. It was found that product selectivity and the rate of reaction are greatly influenced by concentrations of styrene and hydrogen peroxide. Kinetics studies reveal that the mechanism of the reaction is of the "Redox" type. The rate equation, r = k 1k2POPH/ (k1PO+ k2PH) deduced, assuming a steady state involving two stage oxidation-reduction process, represent the data most satisfactorily for the conversion of styrene to styrene oxide. A tentative mechanism of the process has also been suggested.
Dostawca treści:: Biblioteka Nauki

Artykuł

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