Alumina nanofiber-stabilized ruthenium nanoparticles: Highly efficient catalytic materials for hydrogen evolution from ammonia borane hydrolysis |
| |
| Authors: | Min Hu Hua Wang Yi Wang Yun Zhang Jie Wu Bin Xu Daojiang Gao Jian Bi Guangyin Fan |
| |
| Affiliation: | 1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, PR China;2. Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Sichuan University of Science and Engineering, Zigong, 643000, PR China |
| |
| Abstract: | Effective catalysts for hydrogen generation from ammonia borane (AB) hydrolysis should be developed for the versatile applications of hydrogen. In this study, ruthenium nanoparticles (NPs) supported on alumina nanofibers (Ru/Al2O3-NFs) were synthesized by reducing the Ru(Ш) ions impregnated on Al2O3-NFs during AB hydrolysis. Results showed that the Ru NPs with an average size of 2.9 nm were uniformly dispersed on the Al2O3-NFs support. The as-synthesized Ru/Al2O3-NFs exhibited a high turnover frequency of 327 mol H2 (mol Ru min)?1 and an activation energy of 36.1 kJ mol?1 for AB hydrolysis at 25 °C. Kinetic studies showed that the AB hydrolysis catalyzed by Ru/Al2O3-NFs was a first-order reaction with regard to the Ru concentration and a zero-order reaction with respect to the AB concentration. The present work reveals that Ru/Al2O3-NFs show promise as a catalyst in developing a highly efficient hydrogen storage system for fuel cell applications. |
| |
| Keywords: | Ammonia borane Ruthenium Alumina nanofibers Hydrogen generation |
| 本文献已被 ScienceDirect 等数据库收录！ |
