Viscose?based porous carbon fibers: improving yield and porosity through optimization of the carbonization process by design of experiment

Abstract In this study, the production of porous carbon fibers from viscose was investigated. The effects final carbonization temperature (600–1000 °C) and heating rate (6–600 °C h ?1 ), which determine process, on yield, specific surface area were investigated using a central composite design. statistical models found then used to optimize both yield porosity carbonized fibers, are most important factors for further use as precursors activated fibers. Despite contrary effects, with 21.2% could be produced, at same time have 175 m 2 g . produced also characterized by SEM, FTIR Raman spectroscopy, XRD CHNS analysis.