Search Results - subject:"Iron oxide"

Investigation of physicochemical characterization and magnetic enrichment of iron ore from Sidi Maarouf deposit

Chaib, Abdeslam; Bouabdallah, Soufiane; Ferfar, Meriem; … - In: Technology audit and production reserves 1 (2024) 3/75, pp. 9-14

Persistent link: https://www.econbiz.de/10014507213

Electrostatic Self-Assembly of Fe3O4 Nanoparticles on Graphene Oxides for High Capacity Lithium-Ion Battery Anodes

Yoon, Taegyune; Kim, Jaegyeong; Kim, Jinku; Lee, Jung Kyoo - In: Energies 6 (2013) 9, pp. 4830-4840

Magnetite, Fe3O4, is a promising anode material for lithium ion batteries due to its high theoretical capacity (924 mA h g−1), high density, low cost and low toxicity. However, its application as high capacity anodes is still hampered by poor cycling performance. To stabilize the cycling...

Persistent link: https://www.econbiz.de/10011031009

Parametric and dynamic studies of an iron-based 25-kWth coal direct chemical looping unit using sub-bituminous coal

Bayham, Samuel; McGiveron, Omar; Tong, Andrew; Chung, Elena - In: Applied Energy 145 (2015) C, pp. 354-363

-combustion technologies, where the oxygen used for fuel conversion in the CDCL process is provided by an iron-oxide based oxygen carrier … instead of an air separation unit. The iron oxide is reduced using coal in the reducer reactor, producing highly-pure CO2 in … the flue gas, and the reduced iron oxide is regenerated in a separate combustor reactor using air. The CDCL process at …

Persistent link: https://www.econbiz.de/10011263275

Continuous operation characteristics of chemical looping hydrogen production system

Cho, Won Chul; Lee, Do Yeon; Seo, Myung Won; Kim, Sang Done - In: Applied Energy 113 (2014) C, pp. 1667-1674

Three-reactor chemical looping (TRCL) is a hydrogen and electricity production technology with inherent separation of carbon dioxide by use of the iron-based oxygen carrier particles. In this study, an integrated continuous operation test unit (300Wth) using 20wt% Fe2O3/ZrO2as an oxygen carrier...

Persistent link: https://www.econbiz.de/10010718837

Thermally stable iron based redox catalysts for the thermo-chemical hydrogen generation from water

Song, Lee-hwa; Kang, Hyun Woo; Park, Seung Bin - In: Energy 42 (2012) 1, pp. 313-320

Redox materials with high thermal stabilities, comprising iron oxide with alumina were synthesized from ultrasonic … compared with that of pure iron oxide, which decreased rapidly after 1 cycle due to its low thermal stability. The samples …

Persistent link: https://www.econbiz.de/10010811871

Two-step water-splitting at 1273–1623K using yttria-stabilized zirconia-iron oxide solid solution via co-precipitation and solid-state reaction

Ishihara, H.; Kaneko, H.; Hasegawa, N.; Tamaura, Y. - In: Energy 33 (2008) 12, pp. 1788-1793

) reactions with yttria-stabilized zirconia (YSZ)-iron oxide solid solutions prepared by co-precipitation and solid-state reaction …, is examined at temperatures of 1623K for O2 release and 1273K for H2 generation. The YSZ-iron oxide solid solutions with …-precipitation and the solid-state reaction, respectively. The two-step water-splitting process using YSZ-iron oxide solid solutions …

Persistent link: https://www.econbiz.de/10010810456

Fuel saving, carbon dioxide emission avoidance, and syngas production by tri-reforming of flue gases from coal- and gas-fired power stations, and by the carbothermic reduction of i...

Halmann, M.; Steinfeld, A. - In: Energy 31 (2006) 15, pp. 3171-3185

avoidance. In addition, by combining the carbothermic reduction of iron oxide with the partial oxidation of the carbon source …

Persistent link: https://www.econbiz.de/10010807704