Phase distribution of products of radiation and post-radiation distillation of biopolymers: Cellulose, lignin and chitin

Пономарев, А. В.; Kholodkova, E. M.; Metreveli, A. K.; Metreveli, P. K.; Erasov, V.S.; Bludenko, A. V.; Chulkov, V. N.

doi:10.1016/j.radphyschem.2011.04.007

Cited by 15 publications

(4 citation statements)

References 7 publications

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“…The cellulose fibers transformed to a hemicellulose structure, which consists of short cellulose chains, due to the degradation of the O-C-O bond as a result of the E-beam stabilization (Fig. 5) [23][24][25][26].…”

Section: Discussionmentioning

confidence: 99%

Cellulose-based carbon fibers prepared using electron-beam stabilization

Kim¹,

Park²,

Lee

2016

Carbon letters

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Cellulose fibers were stabilized by treatment with an electron-beam (E-beam). The properties of the stabilized fibers were analyzed by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The E-beam-stabilized cellulose fibers were carbonized in N 2 gas at 800°C for 1 h, and their carbonization yields were measured. The structure of the cellulose fibers was determined to have changed to hemicellulose and cross-linked cellulose as a result of the E-beam stabilization. The hemicellulose decreased the initial decomposition temperature, and the cross-linked bonds increased the carbonization yield of the cellulose fibers. Increasing the absorbed E-beam dose to 1500 kGy increased the carbonization yield of the cellulose-based carbon fiber by 27.5% upon exposure compared to untreated cellulose fibers.

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Section: Discussionmentioning

confidence: 99%

Cellulose-based carbon fibers prepared using electron-beam stabilization

Kim¹,

Park²,

Lee

2016

Carbon letters

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“…The use of accelerated electrons at high dose rates makes it possible to implement the direct single-step conversion of cellulose into the liquid condensate (electron-beam distillation mentioned above). It is established [45,46] that at dose rate of ε1.0 kCy/s, such a treatment is accompanied by strong cellulose decomposition, which gives charcoal in addition to the liquid condensate. Decomposition of cellulose via М2 and М3 modes is considered in this part.…”

Section: Radiation-thermal Transformations Of Cellulose At High Domentioning

confidence: 99%

“…The efficiency of the electron-beam conversion of cellulose to liquid organic products was studied depending on the initial temperature and the dispersion degree (specific surface area, Z ) and the type of starting material [45,46,47]. Cotton cellulose (C1), unbleached pine sulfate cellulose (C2) and bleached pine sulfite cellulose (C3) were chosen for the comparison.…”

Section: Radiation-thermal Transformations Of Cellulose At High Domentioning

confidence: 99%

Radiation-Induced High-Temperature Conversion of Cellulose

Пономарев¹,

Ершов²

2014

Molecules

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Thermal decomposition of cellulose can be upgraded by means of an electron-beam irradiation to produce valuable organic products via chain mechanisms. The samples being irradiated decompose effectively at temperatures below the threshold of pyrolysis inception. Cellulose decomposition resembles local "explosion" of the glucopyranose unit when fast elimination of carbon dioxide and water precede formation of residual carbonyl or carboxyl compounds. The dry distillation being performed during an irradiation gives a liquid condensate where furfural and its derivatives are dominant components. Excessively fast heating is adverse, as it results in a decrease of the yield of key organic products because pyrolysis predominates over the radiolytic-controlled decomposition of feedstock. Most likely, conversion of cellulose starts via radiolytic formation of macroradicals do not conform with each other, resulting in instability of the macroradical. As a consequence, glucosidic bond cleavage, elimination of light fragments (water, carbon oxides, formaldehyde, etc.) and formation of furfural take place.

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“…Because of potential economic and environmental advantages, there is a new emphasis on studying feedstock production which can be enhanced by excess gamma, electron, and neutron radiation. ,− Lignocellulosic feedstocks have the potential to be a renewable fuel and chemical source, ,− and γ-radiation has been investigated for use in the conversion of waste and low-value materials, such as plant straw, into higher-value chemicals. − For example, Driscoll et al discussed the feasibility of including ionizing radiation into a wood-based biorefinery . Chung et al reported the radiation-enhanced degradation of various types of lignocellulosic materials to produce ethanol .…”

Section: Introductionmentioning

confidence: 99%

On-Line Raman Measurement of the Radiation-Enhanced Reaction of Cellobiose with Hydrogen Peroxide

et al. 2021

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Production of a chemical feedstock as a secondary product from a commercial nuclear reactor can increase the economic viability of the reactor and enable the deployment of nuclear energy as part of the low-carbon energy grid. Currently, commercial nuclear reactors produce underutilized energy in the form of neutrons and gamma photons. This excess energy can be exploited to drive chemical reactions, increasing the fraction of utilized energy in reactors and providing a valuable secondary product from the reactor. Gamma degradation of cellulosic biomass has been studied previously. However, real-time, on-line monitoring of the breakdown of biomass materials under gamma radiation has not been demonstrated. Here, we demonstrate on-line monitoring of the reaction of cellobiose with hydrogen peroxide under gamma radiation using Raman spectroscopy, providing in situ quantification of organic and inorganic system components.

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Phase distribution of products of radiation and post-radiation distillation of biopolymers: Cellulose, lignin and chitin

Cited by 15 publications

References 7 publications

Cellulose-based carbon fibers prepared using electron-beam stabilization

Cellulose-based carbon fibers prepared using electron-beam stabilization

Radiation-Induced High-Temperature Conversion of Cellulose

On-Line Raman Measurement of the Radiation-Enhanced Reaction of Cellobiose with Hydrogen Peroxide

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