Lignin Conversion in Supercritical Ethanol in the Presence of Solid Acid Catalysts Full article
Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Output data | Year: 2015, Volume: 56, Number: 4, Pages: 434-441 Pages count : 8 DOI: 10.1134/S0023158415040114 | ||||||||||
Tags | alkali lignin, thermal conversion, zeolite catalysts, zirconia, liquid products | ||||||||||
Authors |
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Affiliations |
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Funding (1)
1 | The Ministry of Education and Science of the Russian Federation | 14.607.21.0031 (RFMEFI60714X0031) (114100940042) |
Abstract:
The effects of sulfated ZrO2 and ZrO2–Al2O3 catalysts and acidic zeolite catalysts with various Si/Al ratios on the thermal conversion of alkali lignin in supercritical ethanol at 300–400°C and on the composition of the resulting products have been investigated. All of the catalysts enhance lignin conversion into liquid products. The strongest effect with the catalysts based on sulfated ZrO2 is attained at 400°C; with the zeolites, at 350°C. The catalysts diminish the concentration of phenol and its derivatives and increase the concentration of ethers (mainly the 1,1-diethoxyethane concentration) in the liquid products. The zeolite catalysts are preferable, since the reaction over the ZrO2containing catalysts produces gaseous compounds in higher yields. The maximum lignin conversion and a high yield of low-boiling liquid products are achieved at 350°C with the zeolite catalyst with Si/Al = 30, which contains a high concentration of acid sites that are stable at elevated temperatures. The most abundant phenolic liquid products of lignin conversion over the zeolite catalysts at 350°C are methoxyphenols and their methylated and ethylated derivatives.
Cite:
Kuznetsov B.N.
, Sharypov V.I.
, Chesnokov N.V.
, Beregovtsova N.G.
, Baryshnikov S.V.
, Lavrenov A.V.
, Vosmerikov A.V.
, Agabekov V.E.
Lignin Conversion in Supercritical Ethanol in the Presence of Solid Acid Catalysts
Kinetics and Catalysis. 2015. V.56. N4. P.434-441. DOI: 10.1134/S0023158415040114 WOS Scopus РИНЦ
Lignin Conversion in Supercritical Ethanol in the Presence of Solid Acid Catalysts
Kinetics and Catalysis. 2015. V.56. N4. P.434-441. DOI: 10.1134/S0023158415040114 WOS Scopus РИНЦ
Original:
Кузнецов Б.Н.
, Шарыпов В.И.
, Чесноков Н.В.
, Береговцова Н.Г.
, Барышников С.В.
, Лавренов А.В.
, Восмериков А.В.
, Агабеков В.Е.
Конверсия лигнина в среде сверхкритического этанола в присутствии твердых кислотных катализаторов
Кинетика и катализ. 2015. Т.56. №4. С.436-444. DOI: 10.7868/S0453881115040115 РИНЦ
Конверсия лигнина в среде сверхкритического этанола в присутствии твердых кислотных катализаторов
Кинетика и катализ. 2015. Т.56. №4. С.436-444. DOI: 10.7868/S0453881115040115 РИНЦ
Dates:
Submitted: | Sep 19, 2014 |
Published print: | Jul 1, 2015 |
Published online: | Jul 25, 2015 |
Identifiers:
Web of science | WOS:000358408700005 |
Scopus | 2-s2.0-84937934920 |
Elibrary | 23993174 |
Chemical Abstracts | 2015:1234218 |
Chemical Abstracts (print) | 164:304134 |
OpenAlex | W1172368559 |