Application of inelastic neutron scattering to studies of CO2 reforming of methane over alumina-supported nickel and gold-doped nickel catalysts.
Application of inelastic neutron scattering to studies of CO2 reforming of methane over alumina-supported nickel and gold-doped nickel catalysts.
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DOI：
10.1039/c2cp42745a
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发表时间：
2012-10
期刊：
影响因子：
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通讯作者：
I. Silverwood;Neil G. Hamilton;Andrew R. McFarlane;Josef Kapitán;L. Hecht;Elizabeth L. Norris;R. Mark Ormerod;C. Frost;S. Parker;D. Lennon
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文献类型：
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作者：
I. Silverwood;Neil G. Hamilton;Andrew R. McFarlane;Josef Kapitán;L. Hecht;Elizabeth L. Norris;R. Mark Ormerod;C. Frost;S. Parker;D. Lennon
采用反应测试、振动光谱（非弹性中子散射（INS）、拉曼散射和红外吸收）、程序升温氧化（TPO）、透射电子显微镜和X射线粉末衍射等技术研究了氧化铝负载镍和掺金镍催化剂上甲烷与二氧化碳的重整反应。保留的碳和氢的量分别由TPO和INS测定。最小的氢保留表明这些催化剂在循环氢时非常有效。反应介质中氢气的相对分配用于制定反应动力学的定性描述。在特定的反应条件下，金改性剂的存在似乎没有提供催化剂性能的任何改进。
The methane reforming reaction with carbon dioxide as the oxidant over alumina-supported nickel and gold-doped nickel catalysts is studied using a variety of techniques such as reaction testing, vibrational spectroscopy (inelastic neutron scattering (INS), Raman scattering and infrared absorption), temperature-programmed oxidation (TPO), transmission electron microscopy and X-ray powder diffraction. The quantities of retained carbon and hydrogen are determined by TPO and INS, respectively. Minimal hydrogen retention indicates these catalysts to be very efficient at cycling hydrogen. The relative partitioning of hydrogen within the reaction media is used to formulate a qualitative description of the reaction kinetics. The presence of the gold modifier does not appear to provide any improvement in catalyst performance under the specified reaction conditions.