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Kinetics of Perioda...
Kinetics of Periodate-Mediated Oxidation of Cellulose
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- Sultana, Nazmun (författare)
- KTH,Polymerteknologi,Organic Chemistry, Chemistry, and Chemical Engineering, Chalmers University of Technology, Kemigården 4, Gothenburg, SE-412 96, Sweden, Kemigården 4; FibRe—Centre for Lignocellulose-Based Thermoplastics,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH),Chalmers tekniska högskola,Chalmers University of Technology
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- Edlund, Ulrica, 1972- (författare)
- KTH,Polymerteknologi,FibRe,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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- Guria, Chandan (författare)
- Department of Petroleum Engineering, Indian Institute of Technology (IIT-Indian School of Mines), Dhanbad, 826 004, India,Indian Institute of Technology
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- Westman, Gunnar, 1964 (författare)
- Organic Chemistry, Chemistry, and Chemical Engineering, Chalmers University of Technology, Kemigården 4, Gothenburg, SE-412 96, Sweden, Kemigården 4; FibRe—Centre for Lignocellulose-Based Thermoplastics, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SE-412 96, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- MDPI AG, 2024
- 2024
- Engelska.
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Ingår i: Polymers. - : MDPI AG. - 2073-4360. ; 16:3
- Relaterad länk:
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https://doi.org/10.3...
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https://research.cha... (primary) (free)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- The oxidation of cellulose to dialdehyde cellulose (DAC) is a process that has received increased interest during recent years. Herein, kinetic modeling of the reaction with sodium periodate as an oxidizing agent was performed to quantify rate-limiting steps and overall kinetics of the cellulose oxidation reaction. Considering a pseudo-first-order reaction, a general rate expression was derived to elucidate the impact of pH, periodate concentration, and temperature on the oxidation of cellulose and concurrent formation of cellulose degradation products. Experimental concentration profiles were utilized to determine the rate constants for the formation of DAC (k1), degradation constant of cellulose (k2), and degradation of DAC (k3), confirming that the oxidation follows a pseudo-first-order reaction. Notably, the increase in temperature has a more pronounced effect on k1 compared to the influence of IO4− concentration. In contrast, k2 and k3 display minimal changes in response to IO4− concentration but increase significantly with increasing temperature. The kinetic model developed may help with understanding the rate-limiting steps and overall kinetics of the cellulose oxidation reaction, providing valuable information for optimizing the process toward a faster reaction with higher yield of the target product.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Nyckelord
- cellulose
- cellulose derivatives
- dialdehyde
- kinetic model
- oxidation
- periodate
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Polymers
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