A sustainable mesoporous palladium-alumina catalyst for efficient hydrogen release from N-heterocyclic liquid organic hydrogen carriers
- Title
- A sustainable mesoporous palladium-alumina catalyst for efficient hydrogen release from N-heterocyclic liquid organic hydrogen carriers
- Author
- 서영웅
- Keywords
- H-2 RELEASE; STORAGE; DEHYDROGENATION; ETHYLCARBAZOLE; STABILITY; PD/AL2O3; SUPPORT; PD/TIO2
- Issue Date
- 2019-06
- Publisher
- Nature Pulishing Group
- Citation
- Communications chemistry, v. 2, article no. 68
- Abstract
- Liquid organic hydrogen carriers (LOHC) are interesting hydrogen vectors which can exploit existing infrastructure. Specifically, N-heterocyclic compounds are attractive due to lower dehydrogenation enthalpy than homocyclic ones and demand a viable palladium catalyst to guarantee high dehydrogenation activity at low temperatures and stability in recycle runs. Here, we employ one-pot solvent deficient precipitation yielding a mesoporous palladium-alumina. The prepared catalyst system offers higher hydrogen release capability by 20% than conventional palladium/gamma-Al2O3 in the dehydrogenation of four different N-heterocyclic compounds at or below 250 degrees C. Futhermore, it shows negligible activity loss up to five consecutive runs for perhydro 2-(n-methylbenzyl)pyridine and perhydro 2-methylindole. Such dehydrogenation performance is caused by the solvent deficient environment that restricts palladium mobility by contiguous alumina particles and produces well-dispersed palladium phase with a higher density of (111) plane. Therefore, the reported synthesis method may contribute to the production of innovative dehydrogenation catalysts for LOHC compounds.
- URI
- https://www.nature.com/articles/s42004-019-0167-7https://repository.hanyang.ac.kr/handle/20.500.11754/151575
- ISSN
- 2399-3669
- DOI
- 10.1038/s42004-019-0167-7
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
- Files in This Item:
- A sustainable mesoporous palladium-alumina catalyst for efficient hydrogen release from N-heterocyclic liquid organic hydrogen carriers.pdfDownload
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