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Liquid phase trans-stilbene epoxidation over catalytically active cobalt substituted TUD-1 mesoporous materials (Co-TUD-1) using molecular oxygen

Quek, Xian-Yang ; Tang, Qinghu ; Hu, Shuangquan ; Yang, Yanhui

Applied catalysis. A, General, 2009-06, Vol.361 (1), p.130-136 [Periódico revisado por pares]

Kidlington: Elsevier B.V

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  • Título:
    Liquid phase trans-stilbene epoxidation over catalytically active cobalt substituted TUD-1 mesoporous materials (Co-TUD-1) using molecular oxygen
  • Autor: Quek, Xian-Yang ; Tang, Qinghu ; Hu, Shuangquan ; Yang, Yanhui
  • Assuntos: Catalysis ; Chemistry ; Co-TUD-1 ; Colloidal state and disperse state ; Epoxidation ; Exact sciences and technology ; General and physical chemistry ; Microwave ; Molecular oxygen ; Porous materials ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; trans-Stilbene
  • É parte de: Applied catalysis. A, General, 2009-06, Vol.361 (1), p.130-136
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: The unique pore structure of Co-TUD-1 catalyst is suggested to be beneficial for the epoxidation of bulky alkene molecules, e.g., trans-stilbene with molecular oxygen, comparing with other well-established catalysts, e.g., Co-MCM-41 and Co 2+-NaX. Microwave irradiation can significantly shorten the reaction time, whereas high conversion and epoxide selectivity remained. A series of framework substituted Co-TUD-1 catalysts, prepared by direct hydrothermal synthesis, were characterized using X-ray diffraction, nitrogen physisorption, transmission electron microscopy and UV–vis and Raman spectroscopies. These catalysts showed high conversion and selectivity towards trans-stilbene oxide in liquid phase trans-stilbene epoxidation with molecular oxygen as oxidant in the absence of a sacrificial reductant. The conversion and selectivity did not remarkably differentiate for fresh and recycled catalyst after four reaction runs. The unique pore structure of Co-TUD-1 catalyst is suggested to be beneficial for the epoxidation of bulky alkene molecules comparing with other well-established catalysts, e.g., Co-MCM-41 and Co 2+-NaX. Microwave irradiation can significantly shorten the reaction time, whereas high conversion and epoxide selectivity remained.
  • Editor: Kidlington: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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