Catalytic Hydrogenation and Dehydrogenation Reactions of N-alkyl-bis(carbazole)-Based Hydrogen Storage Materials
| Autor: | Jeong Won Kang, Won-Sik Han, Joori Jung, Byeong Soo Shin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_element
02 engineering and technology lcsh:Chemical technology 010402 general chemistry catalytic hydrogenation/dehydrogenation 01 natural sciences Medicinal chemistry Catalysis hydrogen storage lcsh:Chemistry chemistry.chemical_compound Hydrogen storage carbazole lcsh:TP1-1185 Dehydrogenation Reactivity (chemistry) Physical and Theoretical Chemistry Alkyl chemistry.chemical_classification Carbazole 021001 nanoscience & nanotechnology 0104 chemical sciences Ruthenium lcsh:QD1-999 chemistry 0210 nano-technology Palladium |
| Zdroj: | Catalysts, Vol 11, Iss 123, p 123 (2021) Catalysts Volume 11 Issue 1 |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal11010123 |
| Popis: | Recently, there have been numerous efforts to develop hydrogen-rich organic materials because hydrogen energy is emerging as a renewable energy source. In this regard, we designed and prepared four new materials based on N-alkyl-bis(carbazole), 9,9&prime (2-methylpropane-1,3-diyl)bis(9H-carbazole) (MBC), 9,9&prime (2-ethylpropane-1,3-diyl)bis(9H-carbazole) (EBC), 9,9&prime (2-propylpropane-1,3-diyl)bis(9H-carbazole) (PBC), and 9,9&prime (2-butylpropane-1,3-diyl)bis(9H-carbazole) (BBC), to investigate their hydrogen adsorption/hydrogen desorption reactivity depending on the length of the alkyl chain. The gravimetric densities of MBC, EBC, PBC, and BBC were 5.86, 5.76, 5.49, and 5.31 H2 wt %, respectively, again depending on the alkyl chain length. All materials showed complete hydrogenation reactions under ruthenium on an alumina catalyst at 190 ° C, and complete reverse reactions and dehydrogenation reactions were observed under palladium on an alumina catalyst at < 280 ° C. At this temperature, all the prepared compounds were thermally stable, and no decomposition was observed. |
| Databáze: | OpenAIRE |
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