Journal of Siberian Federal University. Chemistry / Depolymerization of Birch-Wood Organosolv Lignin Over Solid Catalysts in Supercritical Ethanol

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2016 9 (3)
Authors
Ayusheev, Artemiy B.; Taran, Oxana P.; Afinogenova, Irina I.; Mishchenko, Tatyana I.; Shashkov, Michael V.; Sashkina, Kseniya A.; Semeikina, Victoria S.; Parkhomchuk, Ekaterina V.; Agabekov, Vladimir E.; Parmon, Valentin N.
Contact information
Ayusheev, Artemiy B.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; ; Taran, Oxana P.:Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State Technical University; Afinogenova, Irina I.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State Technical University 20 K. Marx, Novosibirsk, 630092, Russia; Mishchenko, Tatyana I.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Shashkov, Michael V.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia; Sashkina, Kseniya A.:Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia; Semeikina, Victoria S.:Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia; Parkhomchuk, Ekaterina V.:Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia; Agabekov, Vladimir E.: Institute of Chemistry of New Materials NAS of Belarus 36 F.Skorina Str., Minsk, 220141, Republic of Belarus; Parmon, Valentin N.:Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia
Keywords
lignocellulosic biomass; birch wood; holocellulose; organosolv lignin; depolymerization; catalysts
Abstract

Catalytic depolymerization of birch-wood organosolv lignin was studied in supercritical ethanol at 260 ºC. Three different acid-basic materials namely sepiolite, zeolite ZSM-5 supported on Al2O3 and Sibunit graphite-like mesoporous carbon promoted via oxidation were tested as catalysts. Moreover, Ru-containing catalysts based on these supports were studied. Among the catalysts without ruthenium, Sibunit matherial was found to produce highest yield of liquid products due to the highest amount of surface acid sites. Precipitating Ru significantly increases the activity of all three supports. Using Ru-containing Sibunit catalyst in lignin depolymerization process allows to avoid coke formation, increases the amount of aromatic monomers and the total yield of liquid products up to 76 %. The yield obtained in best catalytic experiment is more then twice higher compared to the process without any catalyst

Pages
353-370
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/30721