Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo 5790, CEP 87020-900 - Maringá, Paraná, Brazil.
J Environ Manage. 2011 Jan;92(1):178-84. doi: 10.1016/j.jenvman.2010.09.013. Epub 2010 Sep 24.
Activated carbons were prepared from flamboyant pods by NaOH activation at three different NaOH:char ratios: 1:1 (AC-1), 2:1 (AC-2), and 3:1 (AC-3). The properties of these carbons, including BET surface area, pore volume, pore size distribution, and pore diameter, were characterized from N(2) adsorption isotherms. The activated carbons obtained were essentially microporous and had BET surface area ranging from 303 to 2463 m(2) g(-1).(13)C (CP/MAS and MAS) solid-state NMR shows that the lignocellulosic structures were completely transformed into a polycyclic material after activation process, thermogravimetry shows a high thermal resistance, Boehm titration and Fourier-transform infrared spectroscopy allowed characterizing the presence of functional groups on the surface of activated carbons. Scanning electron microscopy images showed a high pore development. The experimental results indicated the potential use of flamboyant pods as a precursor material in the preparation of activated carbon.
用三种不同的 NaOH:炭质量比（1:1（AC-1）、2:1（AC-2）和 3:1（AC-3））将从火焰豆荚中制备的活性炭用 NaOH 进行活化。通过 N2 吸附等温线对这些炭的性质进行了表征，包括 BET 比表面积、孔体积、孔径分布和孔径。所得的活性炭基本上是微孔的，具有 303 至 2463 m2 g-1 的 BET 比表面积。13C（CP/MAS 和 MAS）固态 NMR 表明，在活化过程后木质纤维素结构完全转化为多环材料，热重分析表明具有高耐热性，Boehm 滴定和傅里叶变换红外光谱允许对活性炭表面官能团的存在进行表征。扫描电子显微镜图像显示出高度发达的孔隙。实验结果表明，火焰豆荚作为制备活性炭的前体材料具有潜在的用途。
