@article{01HH2B21C384N2YZQZWT2F34RP,
  abstract     = {{Chemical activation in molten salts is a recent development in the field of tailoring activated carbon, where a combination of activating agents is used rather than a single compound. However, a comprehensive understanding of differences in catalytic activity is lacking. So, the question remains which chemical activation method is more beneficial. This research compares the catalytic effect of ZnCl2 as a single activating agent and its eutectic mixture of ZnCl2-KCl-NaCl (60:20:20 mol %). Pinewood shavings were chemically activated at 400 degrees C in a mass ratio of 5 to 1 (salt to biomass) and then washed to remove the activating agent. Obtained materials were subsequently physically activated using CO2 at 800 degrees C in an attempt to further increase their surface area. Properties of obtained carbons were characterized by elemental and proximate analyses, ICP-AES, FTIR, gas adsorption (N-2, CO2), and adsorption (iodine, methylene blue, and molasses). Chemical activation with ZnCl2 and the eutectic mixture resulted in a surface area of respectively 910 m(2)/g and 917 m(2)/g with significant differences in porosity. The eutectic mixture created a greater proportion of micropores. ZnCl2 was more beneficial for mesoporosity which was formed over a broad range, whereas the eutectic mixture created mesopores in a narrower size range (19-27 nm). Subsequent CO2 gasification widened the pores and lowered the surface area, decreasing the adsorption capacity. This study illustrates that employing mixtures of molten salts has several advantages over a single activating agent and might lead to further development of tailor-made activated carbons.}},
  author       = {{De Smedt, Jonas and Maziarka, Przemyslaw and Arauzo, Pablo J. and Ronsse, Frederik}},
  issn         = {{2190-6815}},
  journal      = {{BIOMASS CONVERSION AND BIOREFINERY}},
  keywords     = {{Chemical activation,Molten salts,Pore development,Mesoporosity,Adsorption capacity,METHYLENE-BLUE,HEAT-TRANSFER,CARBON,BIOMASS,TEMPERATURE,PYROLYSIS,STORAGE,REMOVAL,SALTS,GASIFICATION}},
  language     = {{eng}},
  pages        = {{1251--1266}},
  title        = {{Comparative study on the effect of ZnCl2, a 60:20:20 mol % eutectic of ZnCl2-NaCl-KCl and CO2 during activation of pinewood}},
  url          = {{http://doi.org/10.1007/s13399-023-05123-7}},
  volume       = {{15}},
  year         = {{2025}},
}

Altmetric

View in Altmetric

Web of Science

Times cited: