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1.Catalyst characterization is well performed and linked to activity tests, but for some DRX studies that should be performed on the spent catalysts (both the LDH-based and the obtained by incipient wetting) so to complete table 3 and related discussion.
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2.Regarding section 3.3, discussion could be extended by calculating TOFs at zero time for the catalysts used, not only the catalyst performance at high time values. Though, from an industrial point of view, these latter ones are the interesting ones, reaction rates are proportional to TOFs calculated at zero time, and they can suggest even higher differences in activity. As hydrogen seems to saturate at pressures higher than 5 MPa (though this is not stated by authors at the end of page 16), it is probable than hydrogenation kinetics could be simplified to first order, so the kinetic constants could be calculated instead of TOFs (and more discussion performed on this basis).
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In my opinion the article, however, lack information about the reproducibility of the results, both in the production of the catalyst i.e. parameters achieved by it, as well as the results of the proposed process.
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4Â¥: Originally posted by brucefan at 2015-01-06 16:07:37
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