Publicação

Development of glycerol-based metal-free carbon materials for environmental catalytic applications

Detalhes bibliográficos
Resumo:	A thermally stable and non-porous carbon material (SBET= 10 m2g−1and no micropores), with low ashcontent and basic character, was produced by partial carbonization of glycerol with sulphuric acid fol-lowed by calcination under inert atmosphere. Further thermal activation in air atmosphere at differenttemperatures (from 150 to 350◦C) leads to materials with less basic character and to a tremendous evolu-tion of the porosity, mostly microporosity (SBET= 598 m2g−1and VMic= 0.24 cm3g−1). Experiments showthat metal-free carbon materials synthesized by this approach can be highly active catalysts for the cat-alytic wet peroxide oxidation (CWPO) process when the surface chemistry and textural properties areadequately tuned. Effective catalytic degradation of 2-nitrophenol (80% conversion) was achieved withthe material treated under air atmosphere at 300◦C, even when operating under a high pollutant/catalystmass ratio, opening a window of opportunity for added-value crude glycerol-derived products. Further-more, catalyst activity was effectively recovered by a simple oxidative thermal regeneration procedure.
Autores principais:	Ribeiro, Rui
Outros Autores:	Silva, Adrián; Pinho, Maria; Figueiredo, José; Faria, Joaquim; Gomes, Helder
Assunto:	Carbon material Glycerol Catalytic wet peroxide oxidation (CWPO) Metal-free catalyst 2-Nitrophenol
Ano:	2015
País:	Portugal
Tipo de documento:	artigo
Tipo de acesso:	acesso restrito
Instituição associada:	Instituto Politécnico de Bragança
Idioma:	inglês
Origem:	Biblioteca Digital do IPB

Descrição
Resumo:	A thermally stable and non-porous carbon material (SBET= 10 m2g−1and no micropores), with low ashcontent and basic character, was produced by partial carbonization of glycerol with sulphuric acid fol-lowed by calcination under inert atmosphere. Further thermal activation in air atmosphere at differenttemperatures (from 150 to 350◦C) leads to materials with less basic character and to a tremendous evolu-tion of the porosity, mostly microporosity (SBET= 598 m2g−1and VMic= 0.24 cm3g−1). Experiments showthat metal-free carbon materials synthesized by this approach can be highly active catalysts for the cat-alytic wet peroxide oxidation (CWPO) process when the surface chemistry and textural properties areadequately tuned. Effective catalytic degradation of 2-nitrophenol (80% conversion) was achieved withthe material treated under air atmosphere at 300◦C, even when operating under a high pollutant/catalystmass ratio, opening a window of opportunity for added-value crude glycerol-derived products. Further-more, catalyst activity was effectively recovered by a simple oxidative thermal regeneration procedure.