Adsorption of Carbon Dioxide on Cellulose Nanofiber-Based Monolithic Cryogels Impregnated with Acetylated Cellulose Nanocrystals [Elektronisk resurs]
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Wei, Jiayuan (författare)
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72nd Forest Products Society (FPS) International Convention, Madison, Wisconsin, USA, June 11–14, 2018
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Geng, Shiyu (författare)
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Sarmad, Shokat, 1976- (författare)
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Hedlund, Jonas (författare)
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Oksman, Kristiina, 1959- (författare)
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Luleå tekniska universitet Institutionen för teknikvetenskap och matematik (utgivare)
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Luleå tekniska universitet Institutionen för teknikvetenskap och matematik (utgivare)
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Luleå tekniska universitet Institutionen för samhällsbyggnad och naturresurser (utgivare)
- Publicerad: 2018
- Engelska.
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Ingår i:
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- Relaterad länk:
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http://www.ltu.se/ (Värdpublikation)
Sammanfattning
Ämnesord
Stäng
- Nanocellulose materials with large surface area are prospective as substrates to obtain low-carbon-footprint CO 2 adsorbents. In this study, ice-templating was conducted to prepare cellulose nanofibers (CNFs) based cryogels with monolithic structure, which can provide a good mass flow during the adsorption process. Furthermore, since acetyl groups have shown relatively high CO 2 affinity, cellulose nanocrystals (CNCs) were acetylated and then impregnated into the cryogel to improve its CO 2 capacity. Meanwhile, different amounts of cellulose acetate (CA) were impregnated and characterized as references. The success of the acetylation of CNCs was confirmed by Fourier-transform infrared spectroscopy (FTIR) and the degree of substitution was determined by titration. Results from the scanning electron microscopy (SEM) demonstrated that the monolithic structure was maintained after the impregnation. According to the breakthrough test, the cryogel impregnated with 0.1g of acetylated CNCs exhibits a much higher CO 2 capacity with a value of 1.49 mmol/g compared to the CA impregnated ones. The mechanical properties of the cryogels were also evaluated by compression testing, revealing the outstanding reinforcing effect of acetylated CNCs.
Ämnesord
- Engineering and Technology (hsv)
- Chemical Engineering (hsv)
- Chemical Process Engineering (hsv)
- Teknik och teknologier (hsv)
- Kemiteknik (hsv)
- Kemiska processer (hsv)
- Engineering and Technology (hsv)
- Industrial Biotechnology (hsv)
- Bio Materials (hsv)
- Teknik och teknologier (hsv)
- Industriell bioteknik (hsv)
- Biomaterial (hsv)
- Trä och bionanokompositer (ltu)
- Wood and Bionanocomposites (ltu)
- Chemical Technology (ltu)
- Kemisk teknologi (ltu)
Genre
- government publication (marcgt)
Indexterm och SAB-rubrik
- Nanocellulose
- cryogel
- adsorption
- carbon dioxide
- acetylation
Inställningar
Hjälp
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