Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst
Hydrogenation of flax shives in ethanol over bifunctional Ni/C catalysts at 225 °C has been studied. It has been shown that the 10% Ni/C catalyst enhances the yield of monomeric products from 1.1 to 9.7 wt %, decreases the solid product content from 45 to 35 wt %, and increases the degree of deligni...
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MDPI AG
2022-10-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/10/1177 |
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| author | Angelina V. Miroshnikova Aleksandr S. Kazachenko Valery E. Tarabanko Valentin V. Sychev Andrey M. Skripnikov Yuri L. Mikhlin Yuriy Kosivtsov Anna I. Chudina Oxana P. Taran |
| author_facet | Angelina V. Miroshnikova Aleksandr S. Kazachenko Valery E. Tarabanko Valentin V. Sychev Andrey M. Skripnikov Yuri L. Mikhlin Yuriy Kosivtsov Anna I. Chudina Oxana P. Taran |
| author_sort | Angelina V. Miroshnikova |
| collection | DOAJ |
| description | Hydrogenation of flax shives in ethanol over bifunctional Ni/C catalysts at 225 °C has been studied. It has been shown that the 10% Ni/C catalyst enhances the yield of monomeric products from 1.1 to 9.7 wt %, decreases the solid product content from 45 to 35 wt %, and increases the degree of delignification to 91%. The main monomeric compounds obtained during hydrogenation are propyl guaiacol and propenyl guaiacol. It has been established that an increase in the mass transfer intensity via increasing the stirring rate or decreasing the catalyst grain size leads to an increase in the total yield of monomeric compounds and the propanol guaiacol yield. Alkaline and acid pretreatment increases the cellulose content in the solid product from 42 to 73 wt %. The proposed sequential scheme of the transformation and formation of monomeric products over the bifunctional nickel catalyst is lignin—coniferyl alcohol—4-propanol guaiacol—4-propenyl guaiacol—4-propyl guaiacol. |
| first_indexed | 2024-03-09T20:29:52Z |
| format | Article |
| id | doaj.art-29a644a9694a4d60bad95ee759ef59b5 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T20:29:52Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-29a644a9694a4d60bad95ee759ef59b52023-11-23T23:24:56ZengMDPI AGCatalysts2073-43442022-10-011210117710.3390/catal12101177Hydrogenation of Flax Shives in Ethanol over a Ni/C CatalystAngelina V. Miroshnikova0Aleksandr S. Kazachenko1Valery E. Tarabanko2Valentin V. Sychev3Andrey M. Skripnikov4Yuri L. Mikhlin5Yuriy Kosivtsov6Anna I. Chudina7Oxana P. Taran8Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaDepartment of Biotechnology, Chemistry and Standardization, Tver State Technical University, 22 nab. A. Nikitina, Tver 170026, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaInstitute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk 660036, RussiaHydrogenation of flax shives in ethanol over bifunctional Ni/C catalysts at 225 °C has been studied. It has been shown that the 10% Ni/C catalyst enhances the yield of monomeric products from 1.1 to 9.7 wt %, decreases the solid product content from 45 to 35 wt %, and increases the degree of delignification to 91%. The main monomeric compounds obtained during hydrogenation are propyl guaiacol and propenyl guaiacol. It has been established that an increase in the mass transfer intensity via increasing the stirring rate or decreasing the catalyst grain size leads to an increase in the total yield of monomeric compounds and the propanol guaiacol yield. Alkaline and acid pretreatment increases the cellulose content in the solid product from 42 to 73 wt %. The proposed sequential scheme of the transformation and formation of monomeric products over the bifunctional nickel catalyst is lignin—coniferyl alcohol—4-propanol guaiacol—4-propenyl guaiacol—4-propyl guaiacol.https://www.mdpi.com/2073-4344/12/10/1177flax shiveshydrogenationmass transferethanolSibunitNi/C catalyst |
| spellingShingle | Angelina V. Miroshnikova Aleksandr S. Kazachenko Valery E. Tarabanko Valentin V. Sychev Andrey M. Skripnikov Yuri L. Mikhlin Yuriy Kosivtsov Anna I. Chudina Oxana P. Taran Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst Catalysts flax shives hydrogenation mass transfer ethanol Sibunit Ni/C catalyst |
| title | Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst |
| title_full | Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst |
| title_fullStr | Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst |
| title_full_unstemmed | Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst |
| title_short | Hydrogenation of Flax Shives in Ethanol over a Ni/C Catalyst |
| title_sort | hydrogenation of flax shives in ethanol over a ni c catalyst |
| topic | flax shives hydrogenation mass transfer ethanol Sibunit Ni/C catalyst |
| url | https://www.mdpi.com/2073-4344/12/10/1177 |
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