Acta Phys. -Chim. Sin. ›› 1999, Vol. 15 ›› Issue (07): 613-618.doi: 10.3866/PKU.WHXB19990707

• ARTICLE • Previous Articles     Next Articles

Investigation of the Interaction between NiO and Support,γ-Al2O3,for Oxidative Dehydrogenation of Ethane

Chen Tong, Li Wen-Zhao, Yu Chun-Ying   

  1. Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023
  • Received:1998-09-30 Revised:1999-01-11 Published:1999-07-15
  • Contact: Li Wen-Zhao

Abstract:

The catalytic behavior of alumina-supported NiO catalysts for oxidative dehydrogenation of ethane (ODHE) has been investigated in the temperature range of 400 500℃ A much better improvement of selectivity towards ethylene can be observed, i e. the selectivity of 82%~92% for ethylene can be maintained. The optimum yield of ethylene of 25.3% is obtained over 17% NiO/γ-Al2O3 at 500℃. It is suggested that the NiO of non MSSI(Metal-support strong interaction)is the active phase and the nonstoichiometric oxygen in NiO lattice is the active oxygen species for ODHE. Comparing the O2-TPD spectra of NiO with NiO/γ-Al2O3, the high selectivity for ethylene over the alumina-supported NiO catalysts can be explained.

Key words: NiO/γ-Al2O3, Ethane, Oxidative dehydrogenation, Metal-support interaction