Catalytic stability and surface analysis of microcrystalline Ni3Al thin foils in methanol decomposition
作者： Marta Michalska-Domańska , Małgorzata Norek , Paweł Jóźwik , Bartłomiej Jankiewicz , Wojciech J Stępniowski
DOI: 10.1016/J.APSUSC.2013.12.124
关键词: Amorphous carbon 、 Methanol 、 Nanotechnology 、 Catalysis 、 Nanofiber 、 Carbon nanofiber 、 Materials science 、 Carbon nanotube 、 Carbon 、 Nanoparticle 、 Chemical engineering
摘要: Abstract The research on the development of solid state catalyst is presented. In this study, catalytic activity and stability tests Ni3Al thin intermetallic foils in methanol decomposition were investigated. started above 300 °C, reached a maximum conversion (94%) at 500 °C. Carbon deposit formed during was analyzed details by SEM, BET, XRD, Raman spectroscopy. It found that carbon consists well crystallized, curved multi-walled nanotubes, amorphous carbon, perhaps form nanofibers, without single-walled nanotubes. Despite presence various forms surface, provides good stability: even after 17 h reaction, 90%. At ends obtained nanotubes/nanofibers one can see Ni nanoparticles. Moreover, it has been proven nanoparticles are situated inside nanofibers/nanotubes, as well. mechanism growth proposed.
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