NDLI: Tailoring of porous texture of hemp stem-based activated carbon produced by phosphoric acid activation in steam atmosphere

Content Provider	Springer Nature Link
Author	Lupul, Iwona Yperman, Jan Carleer, Robert Gryglewicz, Grażyna
Copyright Year	2014
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 H$_{3}$PO$_{4}$/hemp stem impregnation ratio, the soaking time and the gaseous atmosphere, on the porosity development was studied. Depending on the processing conditions, the H$_{3}$PO$_{4}$ 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 H$_{3}$PO$_{4}$ 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 H$_{3}$PO$_{4}$ activation.
Starting Page	283
Ending Page	289
Page Count	7
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	22
Issue Number	1
e-ISSN	15734854
Language	English
Publisher	Springer US
Publisher Date	2014-12-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hemp stem Activated carbon Phosphoric acid activation Porous structure Catalysis Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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