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Lignin and lignin-derived porous carbon are widely used in adsorption, capacitors, and catalysis. It has a high surface area, large pore volume, and surface pore distribution. The specific surface area (SBET) of lignin and lignin-derived carbon is determined by Brunauer–Emmett–Teller (BET) analysis, while the pore size distribution of lignin is obtained using BJH (Barrett–Joyner–Halenda) method based on adsorption isotherms. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) determine the surface pore structure of lignin. Lignin-based porous carbon is affected by several factors such as activator/lignin mass ratio, types of activators, and activation temperature on the surface morphology, specific surface area, and pore size distribution. Many connected pores effectively reduce the mass transfer resistance in lignin-based porous carbon.

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Lignin Surface Area, Pores, and Surface Pore Distribution

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  • 发表日期：

    2025年

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  • Ajay Kumar

摘要

Lignin and lignin-derived porous carbon are widely used in adsorption, capacitors, and catalysis. It has a high surface area, large pore volume, and surface pore distribution. The specific surface area (SBET) of lignin and lignin-derived carbon is determined by Brunauer–Emmett–Teller (BET) analysis, while the pore size distribution of lignin is obtained using BJH (Barrett–Joyner–Halenda) method based on adsorption isotherms. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) determine the surface pore structure of lignin. Lignin-based porous carbon is affected by several factors such as activator/lignin mass ratio, types of activators, and activation temperature on the surface morphology, specific surface area, and pore size distribution. Many connected pores effectively reduce the mass transfer resistance in lignin-based porous carbon.