Characterization of Activated Carbon Adsorbents - State of the Art and Novel Approaches

被引:72
作者
Blaeker, Christian [1 ]
Muthmann, Johanna [1 ]
Pasel, Christoph [1 ]
Bathen, Dieter [1 ,2 ]
机构
[1] Univ Duisburg Essen, Chair Thermal Proc Engn, Lotharstr 1, D-47057 Duisburg, Germany
[2] IUTA eV, Inst Energy & Environm Technol, Bliersheimer Str 60, D-47229 Duisburg, Germany
关键词
Activated carbon; Adsorptive properties; Characterization methods; Structural properties; Surface chemistry; PORE-SIZE DISTRIBUTION; PHYSICAL ADSORPTION CHARACTERIZATION; SURFACE ENERGETICAL HETEROGENEITY; TEMPERATURE-PROGRAMMED DESORPTION; DENSITY-FUNCTIONAL THEORY; LOAD-DEPENDENT HEAT; GAS-ADSORPTION; ISOSTERIC HEAT; NITROGEN ADSORPTION; MICROPOROUS CARBONS;
D O I
10.1002/cben.201900008
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Activated carbons are widely used as commercial adsorbents. Thermal or chemical activation creates a pore system and functional groups on the inner surface which may significantly change adsorption properties. Therefore, in addition to knowledge of the structural properties, a sound understanding of surface chemistry is indispensable. This paper summarizes the state of art as well as new developments in both fields. Standardized methods for characterizing structural properties are volumetric measurements and mercury porosimetry. To get a more detailed insight into the region of micropores, a probe molecule method was developed. For characterization of surface chemistry, methods such as IR spectroscopy, temperature-programmed desorption, and Boehm titration are subject of research. Novel methods were developed such as measuring of excess isotherms and calorimetric measurement of heat of adsorption, which are presented and discussed in greater detail in this paper. As each single method can only provide limited information, a better description of surface chemistry requires combination and careful interpretation of complementary information from different methods.
引用
收藏
页码:119 / 138
页数:20
相关论文
共 110 条
[1]  
[Anonymous], 2008, RES LETT PHYS CHEM, DOI DOI 10.1155/2008/127328
[2]  
[Anonymous], 2005, ACTIVATED CARBON ADS, DOI DOI 10.1201/9781420028812
[3]  
[Anonymous], 1963, RECENT PROGR MICROCA
[4]   Towards an accurate estimation of the isosteric heat of adsorption - A correlation with the potential theory [J].
Askalany, Ahmed A. ;
Saha, Bidyut B. .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2017, 490 :59-63
[5]   Characterization of PSD of activated carbons by using slit and triangular pore geometries [J].
Azevedo, D. C. S. ;
Rios, R. B. ;
Lopez, R. H. ;
Torres, A. E. B. ;
Cavalcante, C. L. ;
Toso, J. P. ;
Zgrablich, G. .
APPLIED SURFACE SCIENCE, 2010, 256 (17) :5191-5197
[6]   Evaluation of the BET Method for Determining Surface Areas of MOFs and Zeolites that Contain Ultra-Micropores [J].
Bae, Youn-Sang ;
Yazaydin, A. Oezguer ;
Snurr, Randall Q. .
LANGMUIR, 2010, 26 (08) :5475-5483
[7]  
Bandosz TJ, 2006, INTERFACE SCI TECHNO, V7, P1
[8]   Effect of surface chemistry on sorption of water and methanol on activated carbons [J].
Bandosz, TJ ;
Jagiello, J ;
Schwarz, JA ;
Krzyzanowski, A .
LANGMUIR, 1996, 12 (26) :6480-6486
[9]   THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].
BARRETT, EP ;
JOYNER, LG ;
HALENDA, PP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380
[10]   Load-dependent heat of adsorption of C6 hydrocarbons on silica alumina gel [J].
Berg, Frederik ;
Blaeker, Christian ;
Pasel, Christoph ;
Luckas, Michael ;
Eckardt, Tobias ;
Bathen, Dieter .
MICROPOROUS AND MESOPOROUS MATERIALS, 2018, 264 :208-217