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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18720

Title: Tailoring of porous texture of hemp stem-based activated carbon produced by phosphoric acid activation in steam atmosphere
Authors: LUPUL, Iwona
Gryglewicz, Grazyna
Issue Date: 2015
Publisher: SPRINGER
Citation: JOURNAL OF POROUS MATERIALS, 22 (1), p. 283-289
Abstract: A series of activated carbons (ACs) were produced by chemical activation of hemp stem with phosphoric acid in nitrogen and steam atmospheres. The potential of hemp-derived waste for the manufacture of porous carbons with a wide spectrum of porosity, ranging from microporous to mesoporous, has been demonstrated. The influence of the variables, such as the H3PO4/hemp stem impregnation ratio, the soaking time and the gaseous atmosphere, on the porosity development was studied. Depending on the processing conditions, the H3PO4 activation produces ACs with a wide range of textural parameters, reaching surface areas > 2,500 m(2)/g, micropore pore volumes up to 0.89 cm(3)/g and mesopore volumes up to 1.80 cm(3)/g. The amount of H3PO4 used in the impregnation step affects the porous texture of the resultant ACs to a greater extent than the soaking time. At low and medium impregnation ratios, a steam atmosphere favors the formation of mesopores during H3PO4 activation.
Notes: [Lupul, Iwona; Gryglewicz, Grazyna] Wroclaw Univ Technol, Dept Polymer & Carbonaceous Mat, Fac Chem, PL-50344 Wroclaw, Poland. [Yperman, Jan; Carleer, Robert] Hasselt Univ, Res Grp Appl & Analyt Chem, CMK, B-3590 Diepenbeek, Belgium. grazyna.gryglewicz@pwr.edu.pl
URI: http://hdl.handle.net/1942/18720
DOI: 10.1007/s10934-014-9894-4
ISI #: 000347698100029
ISSN: 1380-2224
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: PhD theses
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