The application of inelastic neutron scattering to investigate the steam reforming of methane over an alumina-supported nickel catalyst

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• 作者：Andrew R. McFarlane ; Ian P. Silverwood ; Elizabeth L. Norris ; R. Mark Ormerod ; Christopher D. Frost ; Stewart F. Parker ; David Lennon
• 关键词：Inelastic neutron scattering ; Steam reforming of methane ; Alumina-supported nickel catalysts
• 刊名：Chemical Physics
• 出版年：12 December, 2013
• 年：2013
• 卷：427
• 期：Complete
• 页码：54-60
• 全文大小：1493 K

文摘

An alumina-supported nickel catalyst, previously used in methane reforming experiments employing CO₂ as the oxidant, is applied here in the steam reforming variant of the process. Micro-reactor experiments are used to discern an operational window compatible with sample cells designed for inelastic neutron scattering (INS) experiments. INS spectra are recorded after 6 h reaction of a 1:1 mixture of CH₄ and H₂O at 898 K. Weak INS spectra are observed, indicating minimal hydrogen retention by the catalyst in this operational regime. Post-reaction, the catalyst is further characterised by powder X-ray diffraction, transmission electron microscopy and Raman scattering. In a comparable fashion to that seen for the 鈥榙ry鈥?reforming experiments, the catalyst retains substantial quantities of carbon in the form of filamentous coke. The role for hydrogen incorporation by the catalyst is briefly considered.