Conversion of Ethanol-Lignin from Pine Wood in a Supercritical Ethanol in the Presence of Borate-Containing Alumina Catalysts

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.17516/1998-2836-0060

Ключевые слова: pine ethanol-lignin, supercritical ethanol, conversion, borate-containing catalysts, liquid products, composition

Аннотация: The influence of temperature on the conversion of ethanol-lignin in supercritical ethanol and on the yield and composition of the products formed was studied. In the absence of catalysts, the highest yield (60 wt.%) of liquid products of thermal conversion of ethanol-lignin was obtained at the temperature of 300 degrees C. According to GC-MS data, the ethanol-soluble products mainly consist of phenols, methoxyphenols and ethyl esters of carboxylic acids. The increase of the temperature of ethanol-lignin conversion to 400 degrees C intensifies the transformation of liquid ethanol-soluble products into solid and gaseous substances and leads to a decrease in ethanol-soluble products the content of methoxyphenols by 3 times and of carboxylic acid esters by 2 times. The use of catalysts, based on borate-containing alumina in the process of ethanol-lignin conversion in a supercritical ethanol at the temperature 300 degrees C increases the yield of products, boiling up to 180 degrees C by 3,4-3,6 times and rises the yield of methoxyphenols by 1,4-1,7 times in comparison with a non-catalytic process.

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Издание

Журнал: JOURNAL OF SIBERIAN FEDERAL UNIVERSITY-CHEMISTRY

Выпуск журнала: Vol. 11, Is. 1

Номера страниц: 81-92

ISSN журнала: 19982836

Место издания: KRASNOYARSK

Издатель: SIBERIAN FEDERAL UNIV

Авторы

  • Sharypov Victor I. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Beregovtsova Natalia G. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Baryshnikov Sergei V. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Miroshnikova Angelina V. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Lavrenov Alexandr V. (Inst Hydrocarbons Proc SB RAS, 54 Neftezavodskaya, Omsk 644040, Russia)
  • Kuznetsov Boris N. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Fed Univ, 79 Svobodny, Krasnoyarsk 660041, Russia)

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