Poliane Chagas
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Poliane Chagas has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Luiz Carlos Alves de Oliveira
Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
2 shared publications - Alexandra Ancelmo Piscitelli Mansur
Center of Nanoscience, Nanotechnology, and Innovation–CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627–Escola de Engenharia, Bloco 2–Sala 2233, Belo Horizonte 31270-901, MG, Brazil
1 shared publication - Carolina G. Furst
Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
1 shared publication - Herman Sander Mansur
Center of Nanoscience, Nanotechnology, and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, UFMG, Brazil
1 shared publication - Isadora Cota Carvalho
Federal University of Minas Gerais
1 shared publication - Izabela D. Padula
Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
1 shared publication
Latest Publications
- 1 September 2018
- Published by Elsevier in Carbohydrate Polymers
- Vol. 195, 401-412
Bioengineered carboxymethyl cellulose-doxorubicin prodrug hydrogels for topical chemotherapy of melanoma skin cancer
- 1 September 2018
- Published by Elsevier in Carbohydrate Polymers
- Vol. 195, 401-412
Bioengineered carboxymethyl cellulose-doxorubicin prodrug hydrogels for topical chemotherapy of melanoma skin cancer
- Open Access
- 28 May 2018
- Published by MDPI AG in Applied Sciences
- Vol. 8 (6) , 881
Mesoporous Niobium Oxyhydroxide Catalysts for Cyclohexene Epoxidation Reactions
Mesoporous catalysts were synthesized from the precursor NbCl5 and surfactant CTAB (cetyltrimethylammonium bromide), using different synthesis routes of, in order to obtain materials with different properties which are capable of promoting the epoxidation of cyclohexene. The materials were characterized by X ray diffractometry (XRD), thermogravimetry (TG), acidity via pyridine adsorption, Hammet titration and N2 adsorption/desorption. The characterization data indicate that the calcination process of the catalysts was efficient for elimination of the surfactant, but it caused a collapse of the structure, causing a Brunauer Emmett Teller (BET) specific area decrease (ClNbS-600, 44 and ClNbS-AC-600, 64 m2 g−1). The catalysts that have not been calcined showed high BET specific areas (ClNbS 198 and ClNbS-AC 153 m2 g−1). Catalytic studies have shown that mild reaction conditions promote high conversion. The catalysts ClNbS and ClNbS-AC showed high conversions of cyclohexene, 50 and 84%, respectively, while the calcined materials showed low conversion (<30%). The epoxide formation was confirmed by nuclear magnetic resonance (NMR).
- 28 May 2018
- Published by MDPI AG in Applied Sciences
- Vol. 8 (6) , 881
Open AccessMesoporous Niobium Oxyhydroxide Catalysts for Cyclohexene Epoxidation Reactions
Mesoporous catalysts were synthesized from the precursor NbCl5 and surfactant CTAB (cetyltrimethylammonium bromide), using different synthesis routes of, in order to obtain materials with different properties which are capable of promoting the epoxidation of cyclohexene. The materials were characterized by X ray diffractometry (XRD), thermogravimetry (TG), acidity via pyridine adsorption, Hammet titration and N2 adsorption/desorption. The characterization data indicate that the calcination process of the catalysts was efficient for elimination of the surfactant, but it caused a collapse of the structure, causing a Brunauer Emmett Teller (BET) specific area decrease (ClNbS-600, 44 and ClNbS-AC-600, 64 m2 g−1). The catalysts that have not been calcined showed high BET specific areas (ClNbS 198 and ClNbS-AC 153 m2 g−1). Catalytic studies have shown that mild reaction conditions promote high conversion. The catalysts ClNbS and ClNbS-AC showed high conversions of cyclohexene, 50 and 84%, respectively, while the calcined materials showed low conversion (<30%). The epoxide formation was confirmed by nuclear magnetic resonance (NMR).