Porous texture of activated carbons prepared by phosphoric acid activation of woods

被引：72

作者：

Díaz-Díez, MA

Gómez-Serrano, V

González, CF

Cuerda-Correa, EM

Macías-García, A

机构：

[1] Univ Extremadura, Escuela Ingn Ind, Area Ciencia Mat & Ingn Met, Badajoz 06071, Spain

[2] Univ Extremadura, Fac Ciencias, Dept Quim Inorgan, Badajoz, Spain

来源：

APPLIED SURFACE SCIENCE | 2004年 / 238卷 / 1-4期

关键词：

porous texture; chemical activation; fractal dimension;

D O I：

10.1016/j.apsusc.2004.05.228

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Activated carbons (ACs) have been prepared using chestnut, cedar and walnut wood shavings from furniture industries located in the Comunidad Autonoma de Extremadura (SW Spain). Phosphoric acid (H3PO4) at different concentrations (i.e. 36 and 85 wt.%) has been used as activating agent. ACs have been characterized from the results obtained by N-2 adsorption at 77 K. Moreover, the fractal dimension (D) has been calculated in order to determine the AC surface roughness degree. Optimal textural properties of ACs have been obtained by chemical activation with H3PO4 36 wt.%. This is corroborated by the slightly lower values of D for samples treated with H3PO4 85 wt.%. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：309 / 313

页数：5

共 32 条

[11] METHOD FOR THE CALCULATION OF EFFECTIVE PORE-SIZE DISTRIBUTION IN MOLECULAR-SIEVE CARBON [J].