TY - JOUR
T1 - Catalytic hydrogenation and dehydrogenation reactions of n-alkyl-bis(Carbazole)-based hydrogen storage materials
AU - Jung, Joori
AU - Shin, Byeong Soo
AU - Kang, Jeong Won
AU - Han, Won Sik
N1 - Funding Information:
Funding: This work was supported by the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Korea (No.20153030041030) and the National Research Foundation (NRF) funded by the Ministry of Science, Korea, ICP (2019M3E6A1103866).
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/1
Y1 - 2021/1
N2 - 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′-(2-methylpropane-1,3-diyl)bis(9H-carbazole) (MBC), 9,9′-(2-ethylpropane-1,3-diyl)bis(9H-carbazole) (EBC), 9,9′-(2-propylpropane-1,3-diyl)bis(9H-carbazole) (PBC), and 9,9′-(2-butylpropane-1,3-diyl)bis(9H-carbazole) (BBC), to investi-gate 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.
AB - 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′-(2-methylpropane-1,3-diyl)bis(9H-carbazole) (MBC), 9,9′-(2-ethylpropane-1,3-diyl)bis(9H-carbazole) (EBC), 9,9′-(2-propylpropane-1,3-diyl)bis(9H-carbazole) (PBC), and 9,9′-(2-butylpropane-1,3-diyl)bis(9H-carbazole) (BBC), to investi-gate 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.
KW - Carbazole
KW - Catalytic hydrogenation/dehydrogenation
KW - Hydrogen storage
UR - http://www.scopus.com/inward/record.url?scp=85100024160&partnerID=8YFLogxK
U2 - 10.3390/catal11010123
DO - 10.3390/catal11010123
M3 - Article
AN - SCOPUS:85100024160
VL - 11
SP - 1
EP - 10
JO - Catalysts
JF - Catalysts
SN - 2073-4344
IS - 1
M1 - 123
ER -