@article{ART003060096},
author={Guizani Chamseddine and Widsten Petri and Siipola Virpi and Paalijärvi Riina and Berg Jonathan and Pasanen Antti and Kalliola Anna and Torvinen Katariina},
title={New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study},
journal={Carbon Letters},
issn={1976-4251},
year={2024},
volume={34},
number={1},
pages={371-386},
doi={10.1007/s42823-023-00601-4}
TY - JOUR
AU - Guizani Chamseddine
AU - Widsten Petri
AU - Siipola Virpi
AU - Paalijärvi Riina
AU - Berg Jonathan
AU - Pasanen Antti
AU - Kalliola Anna
AU - Torvinen Katariina
TI - New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study
JO - Carbon Letters
PY - 2024
VL - 34
IS - 1
PB - Korean Carbon Society
SP - 371
EP - 386
SN - 1976-4251
AB - Engineering of activated carbons (ACs) through chemical activation of organic precursors has been extensively studied for a wide variety of biopolymers, biomasses, wastes and other fossil-based precursors. Despite huge efforts to engineer evermore performant and sustainable ACs, “searching-for-the-best-recipe” type of studies are more the rule than the exception in the published literature. Emerging AC applications related to energy and gas storage require strict control of the AC properties and a better understanding of the fundamentals underlying their engineering. In this study, we provide new insights into the K2CO3 chemical activation of plant-based polyphenols—lignins and tannins—through careful thermoanalytical and structural analyses. We showed for the the first time that the reactivity of polyphenols during K2CO3 chemical activation depends remarkably on their purity and structural properties, such as their content of inorganics, OH functionalities and average molecular weight. We also found that the burn-off level is proportional to the K2CO3/lignin impregnation ratio (IR), but only within a certain range—high impregnation ratios are not needed, unlike often reported in the literature. Furthermore, we showed for the first time that the K2CO3 chemical activation of different carbon surfaces from lignins and tannins can be modelled using simple global solid-state decomposition kinetics. The identified activation energies lay in the range of values reported for heterogenous gas-carbon surface gasification reactions (O2-C, H2O-C, or CO2-C) in which the decomposition of C(O) surface complexes is the common rate-limiting step.
KW - Lignins Tannins Structural analyses Activated carbons Chemical activation K2CO3 Reactivity Kinetics
DO - 10.1007/s42823-023-00601-4
ER -
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna and Torvinen Katariina. (2024). New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study. Carbon Letters, 34(1), 371-386.
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna and Torvinen Katariina. 2024, "New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study", Carbon Letters, vol.34, no.1 pp.371-386. Available from: doi:10.1007/s42823-023-00601-4
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna, Torvinen Katariina "New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study" Carbon Letters 34.1 pp.371-386 (2024) : 371.
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna, Torvinen Katariina. New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study. 2024; 34(1), 371-386. Available from: doi:10.1007/s42823-023-00601-4
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna and Torvinen Katariina. "New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study" Carbon Letters 34, no.1 (2024) : 371-386.doi: 10.1007/s42823-023-00601-4
Guizani Chamseddine; Widsten Petri; Siipola Virpi; Paalijärvi Riina; Berg Jonathan; Pasanen Antti; Kalliola Anna; Torvinen Katariina. New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study. Carbon Letters, 34(1), 371-386. doi: 10.1007/s42823-023-00601-4
Guizani Chamseddine; Widsten Petri; Siipola Virpi; Paalijärvi Riina; Berg Jonathan; Pasanen Antti; Kalliola Anna; Torvinen Katariina. New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study. Carbon Letters. 2024; 34(1) 371-386. doi: 10.1007/s42823-023-00601-4
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna, Torvinen Katariina. New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study. 2024; 34(1), 371-386. Available from: doi:10.1007/s42823-023-00601-4
Guizani Chamseddine, Widsten Petri, Siipola Virpi, Paalijärvi Riina, Berg Jonathan, Pasanen Antti, Kalliola Anna and Torvinen Katariina. "New insights into the chemical activation of lignins and tannins using K2CO3—a combined thermoanalytical and structural study" Carbon Letters 34, no.1 (2024) : 371-386.doi: 10.1007/s42823-023-00601-4
