High temperature water-gas shift without pre-reduction over spinel ferrite catalysts synthesized by glycine assisted sol-gel combustion method

作者：Jeong Dae Woon; Fang Won Jun; Shim Jae Oh; Roh Hyun Seog

来源：International Journal of Hydrogen Energy, 2016, 41(6): 3870-3876.

DOI：10.1016/j.ijhydene.2016.01.024

• Water-gas shift
• Spinel ferrite catalysts
• Sol-gel combustion method
• Inverse spinel structure
• Easier reducibility

Selected metal ions (Ni, Co, Mn, Mg, or Zn) were introduced into iron oxide (spinel lattice) and the resulting materials screened for catalytic activity for the high temperature water-gas shift reaction using waste-derived syngas. The active phase of spinel ferrite catalysts was directly synthesized by the glycine assisted sol-gel combustion method under a reducing atmosphere. Among the prepared catalysts, NiFe2O4 catalyst showed the highest CO conversion (81%) with stability even at a very high gas hourly space velocity of 40,057 h(-1). This result was primarily due to the inverse spinel structure and easier reducibility of NiFe2O4 catalyst.

• 出版日期2016-2-19