Effects of FeCl3 Catalytic Hydrothermal Carbonization on Chemical Activation of Corn Wet Distillers’ Fiber
| Autor: | Omid Norouzi, Eniola Adewakun, Kevin MacDermid-Watts, Animesh Dutta, Trishan Deb Abhi, Ranjan Pradhan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Carbonization General Chemical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Nitrogen 0104 chemical sciences Catalysis Hydrothermal carbonization Chemistry Chemical engineering chemistry medicine Thermal stability Fiber 0210 nano-technology QD1-999 Activated carbon medicine.drug |
| Zdroj: | ACS Omega, Vol 6, Iss 23, Pp 14875-14886 (2021) |
| ISSN: | 2470-1343 |
| Popis: | Corn wet distillers' fiber (corn fiber) is a byproduct of the corn-ethanol production process, with high potential as a precursor for activated carbon due to its moderate nitrogen content and availability. However, there has been limited investigation into activated carbons from the corn fiber. In this work, we produce activated carbons from the corn fiber using three procedures, including direct KOH activation, hydrothermal carbonization (HTC) followed by KOH activation, and FeCl3-catalyzed HTC followed by KOH activation. Catalytic HTC with FeCl3 was found to slightly increase the degree of carbonization relative to uncatalyzed HTC while also removing the nitrogen content at increasing concentrations and slightly increasing the porosity. The resulting activated carbon samples are then characterized by thermal gravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, and nitrogen analysis. The two-step process resulted in activated carbon with substantially higher surface areas than the one-step process (1220 vs 789 m2/g), as well as much higher thermal stability and nitrogen content (up to 1.20%). The results show that the corn fiber has potential for activated carbon production, with the two-step HTC followed by the activation process producing more favorable material properties than direct activation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|