期刊文献+

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia 被引量:8

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia
下载PDF
导出
摘要 The uniformly dispersed transition metal(Co, Ni and Fe) nanoparticles supported on the surface of La-promoted Mg O were prepared via a deposition-precipitation method for hydrogen production from catalytic decomposition of ammonia. X-ray diffraction, N2 adsorption-desorption, transmission electron microscopy, temperature-programmed reduction and temperature-programmed desorption were used to investigate the structure-activity relation of catalysts in NH3 decomposition. The results show that the strong interaction between active species and support can effectively prevent the active species from agglomerating during ammonia decomposition reaction. In addition, the introduction of La species not only facilitates the adsorption and decomposition of NH3 and desorption of N2, but also benefits the better dispersion of the active species. The prepared catalysts showed very high catalytic activity for ammonia decomposition compared with the same active composition samples that reported previously. Meanwhile, the catalysts showed excellent high-temperature stability and no any deactivation was observed, which are very promising candidates for the decomposition of ammonia to hydrogen. The uniformly dispersed transition metal(Co, Ni and Fe) nanoparticles supported on the surface of La-promoted Mg O were prepared via a deposition-precipitation method for hydrogen production from catalytic decomposition of ammonia. X-ray diffraction, N2 adsorption-desorption, transmission electron microscopy, temperature-programmed reduction and temperature-programmed desorption were used to investigate the structure-activity relation of catalysts in NH3 decomposition. The results show that the strong interaction between active species and support can effectively prevent the active species from agglomerating during ammonia decomposition reaction. In addition, the introduction of La species not only facilitates the adsorption and decomposition of NH3 and desorption of N2, but also benefits the better dispersion of the active species. The prepared catalysts showed very high catalytic activity for ammonia decomposition compared with the same active composition samples that reported previously. Meanwhile, the catalysts showed excellent high-temperature stability and no any deactivation was observed, which are very promising candidates for the decomposition of ammonia to hydrogen.
出处 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第11期41-49,共9页 能源化学(英文版)
基金 Financial supported from the Excellent Young Scientists Fund from the National Natural Science Foundation of China (NSFC) (Grant no. 21622106) other projects from the NSFC (Grant nos. 21773288 , 21805167 and 21771117) the Outstanding Scholar Fund (Grant no. JQ201703) the Doctoral Fund (Grant no. ZR2018BB010) from the Science Foundation of Shandong Province of China the Taishan Scholar Project of Shandong Province of China the Hundred Talents project of the Chinese Academy of Sciences the Foundation of State Key Laboratory of Coal Conversion (grant nos. J17-18-902)
关键词 Transition metal NANOPARTICLES MGO support AMMONIA decomposition High activity Hydrogen LANTHANUM Transition metal nanoparticles MgO support Ammonia decomposition High activity Hydrogen Lanthanum
  • 相关文献

同被引文献46

引证文献8

二级引证文献22

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部