التفاصيل البيبلوغرافية
| العنوان: |
Carbon Dioxide Capture Performance of Mesostructured Adsorbent Impregnated with Polyethylenimine. |
| المؤلفون: |
Chien-Hung Chen, Ching-Tsung Yu, Yu-Fei Chang |
| المصدر: |
International Journal of Engineering & Technology Innovation; Jul2024, Vol. 14 Issue 3, p298-308, 11p |
| مصطلحات موضوعية: |
CARBON sequestration, POLYETHYLENEIMINE, MULTIWALLED carbon nanotubes, MESOPOROUS materials, DESORPTION kinetics, SORBENTS |
| مستخلص: |
This study aims to investigate the CO2 uptake performance of mesostructured adsorbents, such as Mobil Composition of Matter No. 41 (MCM-41), Santa Barbara Amorphous-15 (SBA-15), and multi-walled carbon nanotubes (MWNTs), modified with polyethylenimine (PEI). Mesoporous materials are loaded with 50 wt.% PEI using a wet impregnation method. CO2 kinetic experiments of the PEI-modified adsorbents are conducted by a thermogravimetric method. The results reveal that the CO2 adsorption capacities of the PEI/MCM-41, PEI/SBA-15, and PEI/MWNTs composites are 2.02, 3.06, and 2.93 mmol/g, respectively, under 15% CO2 flow at 348 K. The lower CO2 adsorption capacity of PEI/MCM-41 (2.02 mmol/g) is attributed to its poor porosity. The PEI/MWNTs composite has the fastest CO2 adsorption and desorption kinetics at the same temperature, compared to other PEImodified adsorbents. These results suggest that MWNTs might play a significant "separator" role in effectively dispersing the PEI molecular chains on the mesostructured adsorbent. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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