| Autor: |
Podolean, I. Coman, S.M. Bucur, C. Teodorescu, C. Kikionis, S. Ioannou, E. Roussis, V. Primo, A. Garcia, H. Parvulescu, V.I. |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Popis: |
The green macroalga Ulva rigida represents a promising feedstock for biorefinary due to its fast growth and cosmopolitan distribution. The main component of the cell walls of U. rigida is a sulfated glucuronorhamnan polysaccharide known as ulvan. Herein it was found that due to the high (hydrogen)sulfate group content of ulvan, hydrothermal autohydrolysis at 130 °C renders a high percentage of rhamnose (78–79 % recovery from the initial content in the raw material), a rare sugar of high added value. In addition, acid catalysis by a triflate-based graphene oxide under oxygen-free conditions at 180 °C affords moderate amounts of tartaric acid (24–26 %). The same triflate-based graphene oxide catalyst under oxygen pressure yields remarkably high percentages of succinic acid (65 %). The catalyst preserves its activity for at least five consecutive reuses. © 2020 Elsevier B.V. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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