Influences of doping Cr/Fe/Ta on the performance of Ni/CeO{sub 2} catalyst under microwave irradiation in dry reforming of CH{sub 4}

Journal Article · Fri Jan 15 00:00:00 EST 2016 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.10.025· OSTI ID:22574004

Odedairo, Taiwo ^[1]; Ma, Jun ^[2]; Chen, Jiuling ^[1]; Wang, Shaobin ^[3]; Zhu, Zhonghua ^[1]

---

1. School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane (Australia)
2. School of Engineering, University of South Australia, Mawson Lakes, SA (Australia)
3. Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845 (Australia)

The structure of Ni/CeO{sub 2} catalyst with doping of Cr, Fe and Ta was investigated with XRD, N{sub 2} physisorption, XPS and HRTEM and the catalytic activity of the catalysts under microwave irradiation in dry reforming of methane was tested in a microwave reactor. The results show that the introduction of Cr and Ta to Ni/CeO{sub 2} can enhance the interaction between Ni and the support/promoter and inhibit the enlargement of NiO particles during the synthesis. The CH{sub 4} conversions in dry reforming on the catalysts follow the order: Ni/CeO{sub 2}<2Fe–Ni<2Ta–Ni<2Cr–Ni. The superior performance of 2Ta–Ni and 2Cr–Ni may be attributed to the locally-heated Ni particles caused by the strong microwave absorption of the in-situ grown graphene attached on them under microwave irradiation. - Highlights: • The influences of doping Cr, Fe and Ta on Ni/CeO{sub 2} were investigated. • The catalytic performances before and after doping were investigated. • The in-situ grown graphene can promote the conversion of reactants.

• OSTI ID: 22574004
• Journal Information: Journal of Solid State Chemistry, Vol. 233; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION
CATALYSTS
CERIUM OXIDES
CHROMIUM COMPOUNDS
GRAPHENE
INTERACTIONS
IRON COMPOUNDS
IRRADIATION
METHANE
MICROWAVE RADIATION
NICKEL OXIDES
PARTICLES
PERFORMANCE
PROMOTERS
SYNTHESIS
TANTALUM COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY