Synthesis of Nanoporous Material from Lignin via Carbonization Assisted Acid Activation

Abstract:

Waste lignin (WL) from the pulp mill and paper was studied for its potential application to prepare the nanoporous carbon with high porosity via carbonization assisted acid activation. The effect of acid activation such as HNO₃, HCl, H₂SO₄, and H₃PO₄ on lignin transformation to nanoporous carbon investigated. The physicochemical properties of nanoporous carbon were comprehensively characterized through N₂ sorption, Scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR), respectively. N₂ sorption revealed that the condition using 5% vol of phosphoric acid activation at carbonization temperature of 700°C for 2 h exhibited the highly porous structure of carbon nanoparticles with a total pore volume of 0.035 cm³/g. With the properly selecting process variables of waste lignin development could be producing high porosity nanoporous carbon.

• Periodical: Materials Science Forum (Volume 990)
• Pages: 149-154
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.990.149
• Online since: May 2020
• Authors: Nutchaporn Ngamthanacom*, Napat Kaewtrakulchai, Weerawut Chaiwat, Laemthong Chuenchom, Masayoshi Fuji, Apiluck Eiad-Ua
• Keywords: Acid Activation, Carbonization, Nanoporous Material, Waste Lignin

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