So, If I well understood Your sentences/quotation (about the Prof. Holmlid work), what it is really necessary is a LOW amount of graphite (hoppefully graphene) to increase the cathalityc proprieties of Fe-K cathalyser (home made at INFN-LNF).
Yes, this is basically what Holmlid is writing. Only small amounts are useful.
QuoteLuckily, we are able to provide just LOW amounts of such material, in situ or even in open air preparation, with the present procedure.
In other words, it is NOT necessary to study new procedures.
The manual application of a collidal graphite layer like Holmlid does would indeed overcome the issue of coating the entire internal reactor surface with carbon, but my guess is that adding small amounts of a simple hydrocarbon such as methane, perhaps as a preliminary preparation procedure in a separate environment, would potentially work better.
The catalytic cracking of methane on active catalysts (which are generally ceramic/oxide-supported) can occur at relatively low temperatures and form filamentary carbon deposits. This process is also often specifically used for the synthesis of carbon nanotubes.
http://pubs.acs.org/doi/abs/10.1021/ef0101964
http://www.tandfonline.com/doi…1080/15533174.2013.797452
https://web.anl.gov/PCS/acsfuel/preprint archive/Files/47_2_Boston_10-02_0262.pdf
(etc...)