Chromium free high temperature water-gas shift catalyst for the production of hydrogen from waste derived synthesis gas
| Title | Chromium free high temperature water-gas shift catalyst for the production of hydrogen from waste derived synthesis gas |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Jha, A, Jeong, D-W, Lee, Y-L, Jang, W-J, Shim, J-O, Jeon, K-W, Rode, CV, Roh, H-S |
| Journal | Applied Catalysis A-General |
| Volume | 522 |
| Pagination | 21-31 |
| Date Published | JUL |
| ISSN | 0926-860X |
| Keywords | CeO2, Co-Ni-CeO2, Lattice strain, oxygen vacancies, Water-gas shift |
| Abstract | 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. |
| DOI | 10.1016/j.apcata.2016.04.027 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.012 |