Metal-free catalysts derived from lignin for efficient wet peroxide oxidation

• Type: Article in International Conference Proceedings Book
• Date: 2016

Authors

Martin-Martinez, Maria (Author) Other; Barreiro, M.F. (Author) Other; Silva, Adrian (Author) FEUP; Figueiredo, José (Author) Other; Faria, Joaquim (Author) Other; Gomes, Helder (Author) Other

Conference proceedings International

Title: 10º Econtro Nacional de Catálise e Materiais Porosos

Other information

Authenticus ID: P-011-1WN

Abstract (EN): In this work, a wheat and hemp lignin (Sarkanda, Granit S.A.) has been used as raw material for the development of metal-free activated carbons. These materials were tested in the catalytic wet peroxide oxidation (CWPO) of 4-nitrophenol (4-NP; 5 g L-1) during 24 h experiments conducted at relatively mild operating conditions (p = 1 atm, t = 50 °C, pH = 3, catalyst load = 2.5 g L-1 and [H2O2]0 = 17.8 g L-1). First, the lignin was carbonized under N2 atmosphere followed by the activation of the obtained non-porous carbon (LG) under air atmosphere at different temperatures (150 to 350 ºC), leading to the generation of significant porosity.

Language: English

Type (Professor's evaluation): Scientific