Reductive Fractionation of Larch Wood in Supercritical Ethanol in the Presence of a Bifunctional Ru/C Catalyst and Hydrogen Donors | Научно-инновационный портал СФУ

Reductive Fractionation of Larch Wood in Supercritical Ethanol in the Presence of a Bifunctional Ru/C Catalyst and Hydrogen Donors

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1134/S2070050420040091

Ключевые слова: catalyst, formic acid, hydrogen, larch wood, reductive fractionation, ru/c, supercritical ethanol

Аннотация: Abstract: Lignin is a large-scale waste product of hydrolysis and the pulp-and-paper industries. The problem of lignin utilization is addressed by developing techniques for the comprehensive processing of wood biomass that are based on preliminary catalytic fractionation into its key components, which are subsequently used for obtaining target products. Hemicelluloses of larch wood are known to undergo effective depolymerization (~95 wt %) in ethanol at 250°C. Using hydrogen in combination with a catalyst enables us to increase the lignin conversion to 61 wt %, with 47 wt % of the cellulose left in the solid residue. The highest lignin conversion (67 wt %) is achieved using formic acid, but there is undesirable cellulose depolymerization (conversion, 66 wt %) under these conditions. The main monomer products of the catalytic conversion of lignin are 4-propenylguaiacol and 4-propylguaiacol. The content of 4-propenylguaiacol among the liquid products obtained using ethanol and formic acid as reducing agents can be as high as 36 and 33 rel %, respectively. The content of 4-propylguaiacol among the liquid products obtained using hydrogen grows to 33 rel % when a catalyst is used. This work describes the first study of the catalytic fractionation of larch wood in supercritical ethanol in the presence of the bifunctional 3%Ru/C catalyst containing acidic groups. The aim is to identify the effect of the catalyst and the nature of the hydrogen donor (ethanol, H2, or formic acid) on the yield and composition of the product. © 2020, Pleiades Publishing, Ltd.

Ссылки на полный текст

Издание

Журнал: Catalysis in Industry

Выпуск журнала: Vol. 12, Is. 4

Номера страниц: 330-342

ISSN журнала: 20700504

Издатель: Pleiades journals

Авторы

  • Taran O.P. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Sharypov V.I. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Baryshnikov S.V. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Beregovtsova N.G. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Miroshnikova A.V. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Kazachenko A.S. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Sychev V.V. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Kuznetsov B.N. (Russian Acad Sci, Siberian Branch, Kransnoyarsk Sci Ctr, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)

Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.

Вы можете отметить интересные фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.