TY - JOUR
T1 - Iron ore catalysts for methane decomposition to make CO x free hydrogen and carbon nano material
AU - Zhou, Lu
AU - Enakonda, Linga
AU - Li, Sheng
AU - Gary, Daniel
AU - Del-Gallo, Pascal
AU - Mennemann, Christina
AU - Basset, Jean-Marie
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2018/3/27
Y1 - 2018/3/27
N2 - In this work, for the first time, iron ores with 91.7%–96.2% FeO, 1.3%–2.3% AlO, 1.2%–4.5% SiO, 1.3%–3.9% NaO, were studied directly as bulk catalysts for methane decomposition. By hydrogen pre-reduction at 850 °C, FeO species on iron ores were gradually reduced into FeO, FeO and then finally into Fe species. After reduction of 1.6 g of iron ore catalysts of 50 µm particle size with 100 mL/min pure H for 3.5 h at 850 °C, CMD life testing was conducted at 850 °C and GHSV of 3.75 L/g h and the catalyst showed a stable methane conversion for 5 h. When methane decomposition proceeded on Fe sites, FeC species would be formed to deposit graphite around themselves to finally form carbon nano onions. This carbon nano onions material showed excellent application for wastewater purification. All samples were fully characterized with XRF, XRD, H-TPR, TEM and Raman.
AB - In this work, for the first time, iron ores with 91.7%–96.2% FeO, 1.3%–2.3% AlO, 1.2%–4.5% SiO, 1.3%–3.9% NaO, were studied directly as bulk catalysts for methane decomposition. By hydrogen pre-reduction at 850 °C, FeO species on iron ores were gradually reduced into FeO, FeO and then finally into Fe species. After reduction of 1.6 g of iron ore catalysts of 50 µm particle size with 100 mL/min pure H for 3.5 h at 850 °C, CMD life testing was conducted at 850 °C and GHSV of 3.75 L/g h and the catalyst showed a stable methane conversion for 5 h. When methane decomposition proceeded on Fe sites, FeC species would be formed to deposit graphite around themselves to finally form carbon nano onions. This carbon nano onions material showed excellent application for wastewater purification. All samples were fully characterized with XRF, XRD, H-TPR, TEM and Raman.
UR - http://hdl.handle.net/10754/627631
UR - http://www.sciencedirect.com/science/article/pii/S1876107018301299
UR - http://www.scopus.com/inward/record.url?scp=85044381450&partnerID=8YFLogxK
U2 - 10.1016/j.jtice.2018.03.008
DO - 10.1016/j.jtice.2018.03.008
M3 - Article
SN - 1876-1070
VL - 87
SP - 54
EP - 63
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -