01297nam a2200181 a 450000100080000000500110000800800410001910000220006024501310008226001650021352006320037865000120101065300220102265300080104470000230105270000190107570000210109418758862022-03-29       2010    bl uuuu     u00u1 u    #d1 aFREITAS, J. C. C.  aSolid-state 13C NMR studies of activated carbons prepared from biomass using different chemical agents.h[electronic resource]  aIn: INTERNATIONAL BIOCHAR CONFERENCE, 3., 2010, Rio de Janeiro. Progressing from Terra Preta de Índios to the whole world: anais. Rio de Janeiro: Embrapac2010  aActivated carbons are largely employed in several chemical and physical processes nowadays, including water treatment, catalysis, gas storage and others [1]. The surface properties of the porous carbons are determinant for most of such applications. Oxygenated functional groups present at the edges of the aromatic lamellae are known to influence decisively the surface chemistry of these materials [2]. In this work, solid-state 13 C nuclear magnetic resonance (NMR) spectroscopy was used for the analysis of a series of activated carbons prepared from a lignocellulosic precursor, using different chemical activating agents.  abiomass  aActivated carbons  aNMR1 aHONORATO, H. D. A.1 aNOVOTNY, E. H.1 aBONAGAMBA, T. J.