Numerical studies of the effects of process conditions on the development of the porous structure of adsorbents prepared by chemical activation of lignin with alkali hydroxides

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:486

Article

Kwiatkowski, Miroslaw¹  Fierro, Vanessa²  Celzard, Alain² 

[1] AGH Univ Sci & Technol, Fac Energy & Fuels, Al A Mickiewicza 30, PL-30059 Krakow, Poland

[2] Univ Lorraine 7198, ENSTIB, Inst Jean Lamour, UMR CNRS,CS 60036, 27 Rue Philippe Seguin, F-88026 Epinal, France

关键词: Adsorption;    Micropores;    Chemical activation;    Kraft lignin;    Activated carbons;   

DOI  :  10.1016/j.jcis.2016.10.003

来源: Elsevier

【 摘 要 】

This paper presents the results of the application of the advanced LBET and QSDFT methods compared to the BET and DR approach to the comprehensive analysis of the porous structure of activated carbons obtained by chemical activation of demineralised Kraft lignin with potassium and sodium hydroxides. Based on the analysis of nitrogen adsorption isotherms, the influence of the preparation process conditions on the porous structure formation was investigated. Particularly, the impact of the type of activating agent, the activation temperature, the hydroxide to lignin mass ratio, and the flow rate of inert gas on the porous structure formation was assessed. This work proves how useful the used methods of structure analysis are when evaluating the influence of preparation conditions on the formation of the porous structure of activated carbons. (C) 2016 Elsevier Inc. All rights reserved.

【 授权许可】

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