Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole
Highly active Ru nanoparticles (Ru NPs) supported on NiFe layered double hydroxide (Ru/NiFe-LDH) are prepared easily using ultrasound-assisted reduction method without chemical reductants and stabilizers. The plentiful hydroxyls on NiFe-LDH are excited into hydrogen radicals (·H) under the action of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Ultrasonics Sonochemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417721003825 |
| _version_ | 1818462173330931712 |
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| author | Xiaoran Liu Jiaming Shi Xuefeng Bai Wei Wu |
| author_facet | Xiaoran Liu Jiaming Shi Xuefeng Bai Wei Wu |
| author_sort | Xiaoran Liu |
| collection | DOAJ |
| description | Highly active Ru nanoparticles (Ru NPs) supported on NiFe layered double hydroxide (Ru/NiFe-LDH) are prepared easily using ultrasound-assisted reduction method without chemical reductants and stabilizers. The plentiful hydroxyls on NiFe-LDH are excited into hydrogen radicals (·H) under the action of ultrasound for reducing Ru3+ to Ru0. Ru NPs with an average particle size of 1.26 nm highly disperse on the mesopore-like surface of NiFe-LDH, which improve the catalytic performance for N-ethylcarbazole (NEC) hydrogenation. The experimental results show that 5Ru/NiFe-LDH-300–60 exhibits the best catalytic performance with 100% conversion of NEC, 98.88% yield of dodecahydro-N-ethylcarbazole (12H-NEC) and 5.77 wt% mass hydrogen storage capacity under the reaction conditions of 110 ℃, 6 MPa and mRu:mNEC = 0.15 wt% for 80 min. The kinetics study shows that the apparent activation energy is only 25.15 kJ/mol, which is the lowest in the reported literatures. Ru complexes with O-contained groups on NiFe-LDH, improving the catalytic stability in NEC hydrogenation. |
| first_indexed | 2024-12-14T23:57:50Z |
| format | Article |
| id | doaj.art-ba5cfddacbc743cab11eca65c6969d6c |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-12-14T23:57:50Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-ba5cfddacbc743cab11eca65c6969d6c2022-12-21T22:43:02ZengElsevierUltrasonics Sonochemistry1350-41772021-12-0181105840Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazoleXiaoran Liu0Jiaming Shi1Xuefeng Bai2Wei Wu3School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, ChinaSchool of Chemistry and Material Science, Heilongjiang University, Harbin 150080, ChinaSchool of Chemistry and Material Science, Heilongjiang University, Harbin 150080, China; Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin 150040, ChinaSchool of Chemistry and Material Science, Heilongjiang University, Harbin 150080, China; Corresponding author at: School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, China (W. Wu).Highly active Ru nanoparticles (Ru NPs) supported on NiFe layered double hydroxide (Ru/NiFe-LDH) are prepared easily using ultrasound-assisted reduction method without chemical reductants and stabilizers. The plentiful hydroxyls on NiFe-LDH are excited into hydrogen radicals (·H) under the action of ultrasound for reducing Ru3+ to Ru0. Ru NPs with an average particle size of 1.26 nm highly disperse on the mesopore-like surface of NiFe-LDH, which improve the catalytic performance for N-ethylcarbazole (NEC) hydrogenation. The experimental results show that 5Ru/NiFe-LDH-300–60 exhibits the best catalytic performance with 100% conversion of NEC, 98.88% yield of dodecahydro-N-ethylcarbazole (12H-NEC) and 5.77 wt% mass hydrogen storage capacity under the reaction conditions of 110 ℃, 6 MPa and mRu:mNEC = 0.15 wt% for 80 min. The kinetics study shows that the apparent activation energy is only 25.15 kJ/mol, which is the lowest in the reported literatures. Ru complexes with O-contained groups on NiFe-LDH, improving the catalytic stability in NEC hydrogenation.http://www.sciencedirect.com/science/article/pii/S1350417721003825Ultrafine Ru nanoparticlesUltrasound-excitedN-ethylcarbazoleHydrogen storageNiFe layered double hydroxide |
| spellingShingle | Xiaoran Liu Jiaming Shi Xuefeng Bai Wei Wu Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole Ultrasonics Sonochemistry Ultrafine Ru nanoparticles Ultrasound-excited N-ethylcarbazole Hydrogen storage NiFe layered double hydroxide |
| title | Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole |
| title_full | Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole |
| title_fullStr | Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole |
| title_full_unstemmed | Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole |
| title_short | Ultrasound-excited hydrogen radical from NiFe layered double hydroxide for preparation of ultrafine supported Ru nanocatalysts in hydrogen storage of N-ethylcarbazole |
| title_sort | ultrasound excited hydrogen radical from nife layered double hydroxide for preparation of ultrafine supported ru nanocatalysts in hydrogen storage of n ethylcarbazole |
| topic | Ultrafine Ru nanoparticles Ultrasound-excited N-ethylcarbazole Hydrogen storage NiFe layered double hydroxide |
| url | http://www.sciencedirect.com/science/article/pii/S1350417721003825 |
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