Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2010, Vol. 31 ›› Issue (8): 979-986.DOI: 10.1016/S1872-2067(10)60097-6

• Research papers • Previous Articles     Next Articles

Carbon Nanofiber-Supported Ru Catalysts for Hydrogen Evolution by Ammonia Decomposition

DUAN Xuezhi1, ZHOU Jinghong1, QIAN Gang1, LI Ping1, ZHOU Xinggui1,*, CHEN De2,#   

  1. 1State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China 2Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway
  • Received:2010-04-06 Online:2010-08-30 Published:2013-12-26

PDF (PC)

1381

Cited

23

Abstract: Carbon nanofibers (CNFs) with fish-bone graphene alignment and carbon nanotubes (CNTs) were used to support ruthenium for ammonia decomposition. The Ru nanoparticles on the CNF supports are more active than those on CNT supports. The Ru particle size was adjusted by changing the Ru loading or by introducing oxygen containing groups onto the CNF surface. The site activity increases when the Ru crystal size increases. The oxygen groups on the CNFs have a remarkable effect on ammonia decomposition over the Ru nanoparticles. On identically sized Ru crystals, oxygen on the CNFs clearly enhances ammonia decomposition over the Ru/CNFs.

Key words: carbon nanofiber, ruthenium, supported catalyst, ammonia decomposition, hydrogen, structure sensitivity