Studying the Thermal Conversion of Acetone Lignin in Supercritical Butanol in the Presence of NiCuMo/SiO2 Catalysts Full article
Journal |
Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
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Output data | Year: 2017, Volume: 9, Number: 2, Pages: 170-179 Pages count : 10 DOI: 10.1134/S2070050417020088 | ||||||
Tags | 13С NMR spectroscopy, acetone lignin, analysis, butanol, catalysts, chromatography mass spectrometry, conversion, liquid products | ||||||
Authors |
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Affiliations |
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Funding (1)
1 | Russian Science Foundation | 16-13-10326 |
Abstract:
Existing and emerging technologies for the chemical processing of wood are mainly aimed at transforming its cellulose component into target products. In these processes, lignin is produced on a large scale as a waste product, but there are no advanced ways of processing it. This work investigates the effect NiCuМо/SiO2 catalysts have on the thermal transformation of acetone lignin in supercritical butanol at temperatures of 280, 300, and 350°C. The resulting liquid products are studied via gas–liquid chromatography mass spectrometry, and 13С NMR spectroscopy. It is found that butanol undergoes almost no thermochemical conversions at temperatures below 300°C. Catalysts raise its level of conversion to 36–40 wt %. Under the effect of NiCuМо/SiO2 catalysts, the yield of hexane-soluble products of acetone lignin thermal conversion at 300°C increases by a factor of 2.4, while the yield of solid residue falls by approximately a factor of 3.3. Catalysts reduce the relative content of methoxyphenols in hexane-soluble products: the content of syringol in particular falls by a factor of 14. According to 13С NMR spectroscopy, the catalytic transformation of acetone lignin to liquid acetone-soluble products is accompanied by the breaking of β–О–4 chemical bonds between the structural fragments of lignin and a reduction in the content of methoxyl groups, primarily in the syringyl structural units of the resulting products.
Cite:
Sharypov V.I.
, Kusnetsov B.N.
, Yakovlev V.A.
, Beregovtsova N.G.
, Baryshnikov S.V.
Studying the Thermal Conversion of Acetone Lignin in Supercritical Butanol in the Presence of NiCuMo/SiO2 Catalysts
Catalysis in Industry. 2017. V.9. N2. P.170-179. DOI: 10.1134/S2070050417020088 WOS Scopus РИНЦ
Studying the Thermal Conversion of Acetone Lignin in Supercritical Butanol in the Presence of NiCuMo/SiO2 Catalysts
Catalysis in Industry. 2017. V.9. N2. P.170-179. DOI: 10.1134/S2070050417020088 WOS Scopus РИНЦ
Original:
Шарыпов В.И.
, Кузнецов Б.Н.
, Яковлев В.А.
, Береговцова Н.Г.
, Барышников С.В.
Исследование термической конверсии ацетонлигнина в сверхкритическом бутаноле в присутствии катализаторов NiCuMo/SiO2
Катализ в промышленности. 2017. Т.17. №1. С.60-69. DOI: 10.18412/1816-0387-2017-1-60-69 РИНЦ
Исследование термической конверсии ацетонлигнина в сверхкритическом бутаноле в присутствии катализаторов NiCuMo/SiO2
Катализ в промышленности. 2017. Т.17. №1. С.60-69. DOI: 10.18412/1816-0387-2017-1-60-69 РИНЦ
Dates:
Submitted: | Nov 14, 2016 |
Published print: | Apr 1, 2017 |
Published online: | Jul 1, 2017 |
Identifiers:
Web of science | WOS:000423241300011 |
Scopus | 2-s2.0-85021677475 |
Elibrary | 31031659 |
OpenAlex | W2618488207 |