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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Novel periodic mesoporous organosilicas containing pyromellitimides and their application for the photodegradation of asphaltenes

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Autor(es):
Andrade, Luana dos Santos [1] ; Otubo, Larissa [2] ; Castanheira, Bruna [1] ; Brochsztain, Sergio [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed ABC, Ctr Engn Modelagem & Ciencias Sociais Aplicadas, Santo Andre, SP - Brazil
[2] Inst Pesquisas Energet & Nucl, Sao Paulo, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Microporous and Mesoporous Materials; v. 312, JAN 2021.
Citações Web of Science: 0
Resumo

Periodic mesoporous organosilicas containing pyromellitic diimide units embedded in the pore walls (PMOPMI) were synthesized by co-condensation of the bridged silsesquioxane precursor N,N'-bis(3-triethoxysilylpropyl)pyromellitimide with tetraethoxysilane (TEOS) in acidic conditions, in the presence of the structure-directing agent Pluronics P-123. PMOPMI were also synthesized from the corresponding amic acid precursors. The PMOPMI were studied by different techniques, including N-2 adsorption isotherms, transmission electron microscopy, infrared and diffuse reflectance spectroscopy and contact angles. The studied samples displayed well-organized 2D-hexagonal structures. The PMOPMI were able to adsorb petroleum asphaltenes from toluene solutions, and were efficient photosensitizers for the photodegradation of the adsorbed asphaltenes when irradiated. Most of the asphaltenes were removed from solutions by the combined action of adsorption and photodegradation processes. (AU)

Processo FAPESP: 16/05496-2 - Síntese e caracterização de organosílicas mesoporosas contendo imidas aromáticas e suas aplicações na área de energia
Beneficiário:Sergio Brochsztain
Modalidade de apoio: Auxílio à Pesquisa - Regular