Systematic diffusion-ordered spectroscopy for the selective determination of molecular weight in real lignins and fractions arising from base-catalyzed depolymerization reaction mixtures
| العنوان: | Systematic diffusion-ordered spectroscopy for the selective determination of molecular weight in real lignins and fractions arising from base-catalyzed depolymerization reaction mixtures |
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| المؤلفون: | D. Sanchez, Iñigo Garcia-Yoldi, Irantzu Alegria-Dallo, Víctor Martínez-Merino, Eduardo Otazu, Rebeca Galilea-Gonzalo, Ibai Funcia, Alfonso Cornejo, María J. Gil, Karina Hablich |
| المساهمون: | Universidad Pública de Navarra. Departamento de Ciencias, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. INAMAT2 - Institute for Advanced Materials and Mathematics, Nafarroako Unibertsitate Publikoa. Zientziak Saila, Gobierno de Navarra / Nafarroako Gobernua, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. InaMat - Institute for Advanced Materials |
| المصدر: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname Academica-e: Repositorio Institucional de la Universidad Pública de Navarra Universidad Pública de Navarra |
| بيانات النشر: | American Chemical Society, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | DOSY spectroscopy, Materials science, Renewable Energy, Sustainability and the Environment, Depolymerization, General Chemical Engineering, Diffusion, Base-catalyzed depolymerization, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Biorefinery lignin, 01 natural sciences, 0104 chemical sciences, Catalysis, Selective mass determination, Polymer chemistry, Environmental Chemistry, 0210 nano-technology, Base (exponentiation), Spectroscopy, Training grant |
| الوصف: | The valorization of biorefinery downstream lignin fractions is a key issue in increasing the sustainability of second-generation biofuels. The development of reliable methodologies for the selective determination of the apparent masses of the poly(hydroxy)-aromatic ethers arising from lignin depolymerization reaction is crucial. Diffusion-ordered spectroscopy (DOSY) has been tested to estimate the molecular weight in downstream biorefinery lignins and base-catalyzed depolymerization reaction mixtures. Excellent correlation was found in the calibration of molecular weight and diffusion coefficients with standards. DOSY permitted the selective estimation of the apparent masses of different fractions in the lignin and in the depolymerization reaction mixtures, providing a more profound knowledge of the reaction mixture composition than that obtained with traditional size-exclusion chromatography (SEC). Excellent correlations have been achieved in the estimation of the apparent masses of poly(hydroxy)-aromatic ethers between SEC and DOSY. This permits a reliable estimation of the molecular weight of different fractions in the lignin and in the depolymerization product, which is essential for their further applications. Financial support from The Government of Navarra under Project 'PC036-037 Biovalorización' and UNED-Fundación La Caixa 'LCF/PR/PR15/51100007' is sincerely acknowledged. Í.G.-Y. is grateful for the support from The Government of Navarra via the concession of a Technology Training Grant ('Beca de Formación de Tecnólogos'). |
| وصف الملف: | application/pdf |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20b6b5586114e7f36ec1e91307827440 https://hdl.handle.net/2454/39255 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....20b6b5586114e7f36ec1e91307827440 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |