Structure sensitivity of methanol decomposition on Ni/SiO catalysts
Journal of Materials Science, ISSN: 0022-2461, Vol: 46, Issue: 22, Page: 7144-7151
2011
- 24Citations
- 15Captures
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Article Description
Three different silica-supported nickel samples were prepared by successive adsorption, reduction, and passivation (SARP) of nickel. The materials obtained were characterized by various techniques (TEM, XRD, H chemisorption, FTIR spectroscopy of adsorbed CO, FMR). Metal nickel particles were uniformly distributed by size with all samples. With increasing the number SARP cycles (1, 3, and 5, respectively) the metal concentration (3.6, 7.6, and 12.6 wt%, respectively) and the mean particle size (4-5, ca. 6 and ca. 7 nm, respectively) also increased without substantial increase of the number of metal particles. The samples were tested as catalysts in methanol decomposition to CO and H. It was found that this reaction was structure sensitive and the turn-over frequency decreased with the particle size increase. In contrast, the secondary interaction between the reaction products, i.e., CO methanation (occurring above 515 K) appears to be structure insensitive. © 2011 Springer Science+Business Media, LLC.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=80052047149&origin=inward; http://dx.doi.org/10.1007/s10853-011-5437-4; https://link.springer.com/10.1007/s10853-011-5437-4; http://www.springerlink.com/index/10.1007/s10853-011-5437-4; http://www.springerlink.com/index/pdf/10.1007/s10853-011-5437-4; https://dx.doi.org/10.1007/s10853-011-5437-4; https://link.springer.com/article/10.1007/s10853-011-5437-4
Springer Science and Business Media LLC
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