Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2016)
    Nanomaterials Wednesday Sessions
       Session NM-WeP

Paper NM-WeP13
High Temperature Shift Reaction without Pre-reduction over Metal Substituted Spinel Ferrite Catalysts prepared by Assisted Sol-Gel Method

Wednesday, December 14, 2016, 4:00 pm, Room Mauka

Session: Nanomaterials Poster Session
Presenter: Dae-Woon Jeong, Changwon National University, Republic of Korea
Correspondent: Click to Email
The purpose of this study was to prepare directly the magnetite of spinel ferrite catalysts using glycine assisted sol-gel combustion method and to compare the catalytic activity of Ni, Co, Mn, Mg, and Zn substituted spinel ferrite catalysts for the high temperature shift reaction. Selected metal ions (Ni, Co, Mn, Mg, and Zn) were introduced into iron oxide (spinel lattice) and the resulting materials screened for catalytic performance for the high temperature shift reaction using waste-derived synthesis gas. The active phase of spinel ferrite catalysts was directly prepared by the glycine assisted sol-gel combustion method under a reducing atmosphere. Among the prepared nano catalysts, NiFe2O4 catalyst exhibited the highest CO conversion (XCO=81%) with long term stability even at a very high gas hourly space velocity of 40,057h-1. This result was mainly due to the inverse spinel structure and easier reducibility of NiFe2O4 catalyst. The properties of metal ferrite spinel have been analyzed by Brunauer-Emmett-Teller (BET) method, X-raydiffraction (XRD), and temperature programmed reduction (TPR).