caa a22 4500 606194746 CHVBK 20210128100915.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10934-014-9894-4 doi (NATIONALLICENCE)springer-10.1007/s10934-014-9894-4 Tailoring of porous texture of hemp stem-based activated carbon produced by phosphoric acid activation in steam atmosphere [Elektronische Daten] [Iwona Lupul, Jan Yperman, Robert Carleer, Grażyna Gryglewicz] 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 >2,500m2/g, micropore pore volumes up to 0.89cm3/g and mesopore volumes up to 1.80cm3/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. The Author(s), 2014 Hemp stem nationallicence Activated carbon nationallicence Phosphoric acid activation nationallicence Porous structure nationallicence Lupul Iwona Department of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344, Wrocław, Poland aut Yperman Jan Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, 3590, Diepenbeek, Belgium aut Carleer Robert Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, 3590, Diepenbeek, Belgium aut Gryglewicz Grażyna Department of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344, Wrocław, Poland aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/1(2015-02-01), 283-289 1380-2224 22:1<283 2015 22 10934 https://doi.org/10.1007/s10934-014-9894-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-014-9894-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lupul Iwona Department of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344, Wrocław, Poland aut NATIONALLICENCE 700 1- Yperman Jan Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, 3590, Diepenbeek, Belgium aut NATIONALLICENCE 700 1- Carleer Robert Research Group of Applied and Analytical Chemistry, CMK, Hasselt University, Agoralaan Gebouw D, 3590, Diepenbeek, Belgium aut NATIONALLICENCE 700 1- Gryglewicz Grażyna Department of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344, Wrocław, Poland aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/1(2015-02-01), 283-289 1380-2224 22:1<283 2015 22 10934