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Polyethyleneimine-functional cellulose aerogels and wood-based templates for CO2 capture
http://hdl.handle.net/10212/2604
http://hdl.handle.net/10212/26041334bce6-1cfb-4d86-ab1e-7cfcaaf2cafa
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全文 (5.9 MB)
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内容・審査結果の要旨 (143.8 KB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||
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| 公開日 | 2024-01-18 | |||||||||
| タイトル | ||||||||||
| タイトル | Polyethyleneimine-functional cellulose aerogels and wood-based templates for CO2 capture | |||||||||
| 言語 | en | |||||||||
| その他のタイトル | ||||||||||
| その他のタイトル | CO2回収のためのポリエチレンイミン機能化セルロースエアロゲルと木質鋳型 | |||||||||
| 言語 | ja | |||||||||
| 作成者 |
オウ, セイ
× オウ, セイ
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Cellulose aerogels | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | wood templates | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | CO2 capture | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | mesoporous structure | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | nano-fiber | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Polyethyleneimine (PEI) functionalized mesoporous sorbent have been widely studied for chemisorb CO2. However, those porous materials of aerogels show high cost and complicated process to restrict the application in industry. In this work, the cellulose aerogel with low density and high specific surface area was prepared by the non-solvent impacted thermally induced phase separation (NITIPS) method and hydrolysis process. After PEI impregnation process, the PEI-impregnated cellulose (PIC) aerogel showed large shrinkage due to the low mechanical strength and large hygroscopicity. Hence, a novel polyethyleneimine-crosslinked cellulose (PCC) aerogel sorbent was prepared through the crosslinking reaction. The obtained porous PCC aerogel showed 3D network structure with irregularly shaped microscale and nanoscale pores and large specific surface area. The CO2 adsorption capacity of PCC-1 aerogel reached 2.31 mmol/g at 25 °C under pure dry CO2 atmosphere based on the chemical and physical absorption. The PCC aerogel showed excellent CO2 adsorption-desorption recyclability, retaining 93% of the initial value after 10 adsorption-desorption cycle tests. However, the CO2 selective and mechanical properties of materials still face huge challenges to meet the practical requirement. Therefore, a high strength delignified wood was developed to be a matrix to load PEI for CO2/N2 selective adsoroption. After lignin removal, the delignified wood showed micro- and meso-porous structure with high specific surface area (44.3 m2/g) determined with physical CO2 adsorption. With the increasing the PEI loading content, the PEI-delignified wood composite with 49 wt% of PEI (P49) showed super-high CO2/N2 ideal selectivity (S = 114), high CO2 adsorption capacity (2.96 mmol/g) and excellent CO2 cyclic performance at 120 °C. Pseudo-second order model accurately predicted the CO2 adsorption behaviors of P49 at different temperature based on chemical adsorption. More importantly, the Young`s modulus of P49 reaches to 756 MPa, over 10 times higher than that of cellulose porous materials reported in literature. The developed PEI-delignified wood would play an important role in the combustion industry as a potential CO2 adsorption sorbent. | |||||||||
| 言語 | en | |||||||||
| 日付 | ||||||||||
| 日付 | 2020-09-24 | |||||||||
| 日付タイプ | Issued | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||
| 資源タイプ | doctoral thesis | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 学位授与番号 | ||||||||||
| 学位授与番号 | 甲第976号 | |||||||||
| 学位名 | ||||||||||
| 言語 | ja | |||||||||
| 学位名 | 博士（工学） | |||||||||
| 学位授与年月日 | ||||||||||
| 学位授与年月日 | 2020-09-24 | |||||||||
| 学位授与機関 | ||||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||||
| 学位授与機関識別子 | 14303 | |||||||||
| 言語 | ja | |||||||||
| 学位授与機関名 | 京都工芸繊維大学 | |||||||||
