期刊
JOURNAL OF ENERGY CHEMISTRY
卷 24, 期 2, 页码 219-224出版社
ELSEVIER
DOI: 10.1016/S2095-4956(15)60304-7
关键词
(N-ethyl)carbazole; hydrogen storage; Raney-Ni catalyst; reaction kinetics; first reaction position
资金
- National Natural Science Foundation of China [U1162127, U1462201, 21076189, 21476202, 21276231]
Hydrogenation of carbazole and N-ethylcarbazole over Raney-Ni catalyst were realized in the temperature range of 393-503 K. 4[H] adduct dominated the hydrogenation products and the formation of 2[H] adduct was the rate-limiting step during the period, in which the conversion of carbazole was less than 40%. The hydrogenation process followed pseudo-first-order kinetics and the hydrogenation activation energies of carbazole and N-ethylcarbazole were 90 kJ/mol and 115 kJ/mol, respectively. The reaction starting position as well as the pathway of the hydrogenation of (N-ethyl)carbazole were investigated by comparing the kinetic characteristics of hydrogen uptake of carbazole and N-ethylcarbazole. The results showed that the reaction was a stepwise hydrogenation process and the first H-2 was added to the Cl = C10 double bond in the hydrogenation.
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