%0 Journal Article %J Applied Catalysis A-General %D 2016 %T Chromium free high temperature water-gas shift catalyst for the production of hydrogen from waste derived synthesis gas %A Jha, Ajay %A Jeong, Dae-Woon %A Lee, Yeol-Lim %A Jang, Won-Jun %A Shim, Jae-Oh %A Jeon, Kyung-Won %A Rode, Chandrashekhar V. %A Roh, Hyun-Seog %K CeO2 %K Co-Ni-CeO2 %K Lattice strain %K oxygen vacancies %K Water-gas shift %X

A comparative study between monometallic (Me-CeO2, Me =Zn, Cu, Fe and Co) and Ni-doped bimetallic (Me-Ni-CeO2) catalysts has been performed in the high temperature water-gas shift (HT-WGS) reaction using waste derived synthesis gas. Experimental results revealed that Me-Ni-CeO2 exhibited higher catalytic performance than simple Me-CeO2 catalysts. Within the Me-Ni-CeO2 series, Co-Ni-CeO2 exhibited excellent and stable catalytic performance (CO conversion > 90%) at a very high GHSV of 143,000 h(-1). The existence of high" concentration of Ce3+ ions and oxygen vacancies on the catalyst surface were responsible for the increased WGS activity of Co-Ni-CeO2. In addition, Co-Ni-CeO2 maintains a stable performance for 50 h. However, commercial Fe2O3-Cr2O3 catalyst showed a steep decline from their initial CO conversion values 15-10% within 5 h. (C) 2016 Elsevier B.V. All rights reserved.

%B Applied Catalysis A-General %I ELSEVIER SCIENCE BV %C PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS %V 522 %P 21-31 %8 JUL %G eng %3

Foreign

%4 4.012 %R 10.1016/j.apcata.2016.04.027