Efficient Toluene Adsorption on Metal Salt-Activated Porous Carbons Derived from Low-Cost Biomass: A Discussion of Mechanism.

ABSTRACT: Porous carbons (PCS) derived from sodium lignin sulfonate were activated by four common metal salts. The samples exhibit distinct characteristics of irregular, sunflower-like, interconnected sheet, and tine block morphologies under the impact of NaCl, CaCl₂, ZnCl₂, and FeCl₃, respectively (PCS-MCl _x ). Surprisingly, the maximum and minimum specific surface areas are 1524 and 44 m²/g corresponding to PCS-ZnCl₂ and PCS-NaCl. All of the samples have plentiful functional groups; herein, PCS-NaCl and PCS-FeCl₃ are detected with the highest O and S contents (11.85, 1.08%), respectively, which signifies sufficient active sites for adsorption. These porous materials were applied in toluene adsorption from paraffin

SUBMITTER: Li B 

PROVIDER: S-EPMC7288569 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature