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Lignin DerivedAromatic Monomersfrom Birch Wood byLaccase (LccH)Pretreatment and Ru/CCatalyst: A Two-PotApproach for… :научное издание Nishanth SekarChikunov Andrey SThankappan Sugitha2022 год

Lignin Derived Aromatic Monomers from Birch Wood by Laccase (LccH) Pretreatment and Ru/C Catalyst: A Two-Pot Approach for Sustainable Biorefineries : научное издание
статья из журнала

Дополнительные ссылки: eLibrary
База данных: Каталог библиотеки СФУ
Библиографическое описание: Lignin Derived Aromatic Monomers from Birch Wood by Laccase (LccH) Pretreatment and Ru/C Catalyst: A Two-Pot Approach for Sustainable Biorefineries : научное издание / S. Nishanth [et al.]. - Текст : непосредственный // Biomass Conversion and Biorefinery. - 2022. - №. - P. 1-6. - ISSN 2190-6815. - ISSN 2190-6823, DOI 10.1007/s13399-022-03197-3.
Аннотация: Lignin is the second most abundant natural raw material after cellulose on the earth, occupying 15–40% of typical dry lignocellulosic biomass and considered the only scalable and renewable feedstock composed of aromatic monomers. The present study attempted a two-step depolymerization procedure of Enzolv pretreated birch wood (BW) biomass and catalysts for the selective production of low molecular weight (LMW) aromatics. The optimization of catalysts on carbon supports proved that 1% Ru/C to be a better choice with an increased monomeric yield of 5.2 to 24.9% over Ni/C (1% and 3%) for organosolv birchwood lignin. Most lignins in BW were converted to aromatics on partial digestion of cellulose. Under Enzolv/enzymatically pretreated optimized conditions and in the absence of an external hydrogen source, catalytically depolymerized BW using 1% Ru/C resulted in the fabrication of more than 20.4% of aromatics over control. Furthermore, under highly reduced conditions, the coupling of BW depolymerized residue and catalysts confirmed the presence of monomeric units with a greater surface area (< 1 nm). The enzymatic and catalytic coupled approach yielded low molecular mass aromatic compounds, including syringol, catechol, guiacol, eugenol, coniferyl alcohol, homovanillic acid, and 4-ethyl phenol. The optimized method provides mechanistic insight into effective lignin depolymerization of BW mediated by decarbonylation and hydrogenolysis reactions.
Год издания: 2022
Авторы: Nishanth Sekar , Chikunov Andrey S , Thankappan Sugitha , Taran Oxana P , Parmon Valentin N , Uthandi Sivakumar
Издательство: Берлин
Источник: Biomass Conversion and Biorefinery
Номера страниц: 1-6
Держатель оригинала документа: Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Karunya Institute of Technology and Sciences, Tamil Nadu Agricultural University
Количество экземпляров:
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