Conversion of powdered active carbon into monoliths without reducing specific surface area using H3PO4-impregnated waste sawdust
2014; Elsevier BV; Volume: 125; Linguagem: Inglês
10.1016/j.matlet.2014.03.125
ISSN1873-4979
AutoresDawei Li, Yuanyu Tian, Yingyun Qiao, Ling Wen,
Tópico(s)Carbon Nanotubes in Composites
ResumoPowdered active carbon was converted into active carbon monoliths (ACMs) without reducing specific surface (SSA) by adding H3PO4-impregnated waste sawdust (HIWS) before extrusion. The effects of activation time on the morphologies, textural properties, and compression strength of the prepared ACMs were investigated. The HIWS could act as an easy-making binder for conversion of powdered active carbon into ACMs having a higher SSA than the powdered active carbon. The SSA and compression strength of the ACMs increased with prolonging the activation time. Monolithic active carbon with a SSA of 715 m2/g and compression strength of 4.8 MPa was produced by heating at 560 °C for 160 min. This research might lead to cost-effective conversion of powdered active carbon into ACMs without compromising SSA.
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