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Evolution of structure and activity of char-supported iron catalysts prepared for steam reforming of bio-oil.
- Source :
-
Fuel Processing Technology . Apr2017, Vol. 158, p180-190. 11p. - Publication Year :
- 2017
-
Abstract
- The aim of this study is to investigate the changes in iron phase, crystal size, surface area, and char structure/reactivity of the char-supported iron catalysts after them being used for bio-oil reforming. The catalysts were prepared under different conditions (varying in temperatures, gasification agents and iron concentrations) and then used to reform bio-oil under a fixed experimental condition at 800 °C. The results show that the catalysts prepared from the steam gasification of Fe-loaded coal were preferred in terms of catalytic performance. The X-ray diffraction analysis indicates that the iron phases in the fresh catalysts varied while the used catalysts nearly showed identical iron phase of magnetite (Fe 3 O 4 ). The crystal iron particle in the catalysts would apparently increase after reforming when the initial iron phase was carbides (γ-Fe and/or α-Fe). The char structure of the catalysts was significantly affected by the ‘volatile-char interactions’ during reforming process. And the catalysts' surface area and reactivity in air were both reduced mainly due to the coke formation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03783820
- Volume :
- 158
- Database :
- Academic Search Index
- Journal :
- Fuel Processing Technology
- Publication Type :
- Academic Journal
- Accession number :
- 121156826
- Full Text :
- https://doi.org/10.1016/j.fuproc.2017.01.002