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Hydrogen evolution from hydrolysis of ammonia borane catalyzed by Rh/g-C3N4 under mild conditions.
- Source :
-
International Journal of Hydrogen Energy . Apr2018, Vol. 43 Issue 14, p7038-7045. 8p. - Publication Year :
- 2018
-
Abstract
- Developing effective catalysts for hydrogen evolution from hydrolysis of ammonia borane (AB) is of great significance considering the useful applications of hydrogen. Herein, graphitic carbon nitride (g-C 3 N 4 ) prepared through the simply pyrolysis of urea was employed as a support for Rh nanoparticles (NPs) stabilization. The in-situ generated Rh NPs supported on g-C 3 N 4 with an average size of 3.1 nm were investigated as catalysts for hydrogen generation from the hydrolysis of AB under mild conditions. The Rh/g-C 3 N 4 catalyst exhibits a high turnover frequency of 969 mol H 2 · (min·mol Rh ) −1 and a low activation energy of 24.2 kJ/mol. The results of the kinetic studies show that the catalytic hydrolysis of AB over the Rh/g-C 3 N 4 catalyst is a zero-order reaction with the AB concentration and a first-order reaction with the Rh concentration. This work demonstrates that g-C 3 N 4 is a useful support to design and synthesis of effective Rh-based catalyst for hydrogen-based applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CATALYSTS
*HYDROLYSIS
*NANOPARTICLES
*ACTIVATION energy
*AMMONIA
Subjects
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 43
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 128804231
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2018.02.148