Porous carbonaceous materials from hydrothermal carbonization and KOH activation of corn stover for highly efficient CO 2 capture
Abstract
Sustainable biomass-derived carbon materials were produced by hydrothermal carbonization of corn stover that was followed by chemical activation with KOH. The prepared carbon materials were used for CO2 adsorption and had a CO2 uptake of 7.14 mmol/g at a pressure of 1 bar and at 0°C that was much higher than CO2 uptake by activated carbon that was prepared from direct activation of corn stover (2.78 mmol/g). The porous corn stover-derived carbonaceous material had high surface area (2442 m2/g) and large pore volume (1.55 cm3/g). Product yields obtained by the activation of hydrothermally carbonized corn stover were significantly higher than those obtained by the direct activation of corn stover (36–75 vs. 8%). The prepared corn stover-derived porous carbon had a high CO2/N2 selectivity of 15.5 and exhibited constant CO2 uptake for five successive reuse cycles. The hydrothermal carbonization step plays an important role for producing porous carbons from biomass that have high and specific adsorption properties.
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Traditional dry pyrolysis cannot meet the requirement for high carbon yield.
“However, traditional dry pyrolysis cannot meet the requirement for high carbon yield [14, 15].”
From Preparation of Microporous Carbon from <i>Sargassum horneri</i> by Hydrothermal Carbonization and KOH Activation for CO<sub>2</sub> Capture (2018) · cites this paper as [15]
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“However, traditional dry pyrolysis cannot meet the requirement for high carbon yield [14, 15].”
Background
- Authors
- Shen, F., Wang, Y., Li, L., Zhang, K., Smith, R. L., & Qi, X.
- Affiliations
- Agro-Environmental Protection Institute (CN)
- Nankai University (CN)
- Tohoku University (JP)
- Corresponding author
- Qi, Xinhua
- Venue
- Chemical Engineering Communications
- Publisher
- Informa UK Limited
- Published
- 2018-02-08
- Volume
- 205
- Issue
- 4
- Pages
- 423-431
- ISSN
- 0098-6445 (ISSN-L)
- 1563-5201
- OpenAlex
- W2747388483
- Cited by
- 65
- References
- 33
- Citations by year
- 2026: 3 · 2025: 12 · 2024: 9 · 2023: 9 · 2022: 8 · 2021: 10 · 2020: 4 · 2019: 6 · 2018: 3 · 2017: 1
- FWCI
- 2.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemical Engineering Communications (publishedVersion)
- Funders
- National Natural Science Foundation of China (No. 21577073)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- hydrothermal carbonization, KOH activation, corn stover, porous carbon, CO2 capture, CO2 adsorption, biomass-derived carbon, CO2/N2 selectivity, adsorbent reusability, surface area, pore volume
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