Highlights
Patients in the experimental group received intravenous ribavirin versus supportive care only in the control group.
Ribavirin was not associated with reduced negative conversion time of SARS-CoV-2 PCR test compared with the control group.
Ribavirin did not reduce the mortality rate compared with the control group.
From the decomposition of methane, hydrogen without carbon oxides can be produced with a
high energy-efficiency, which is attractive for its suitability of utilization in the fuel cells. At a
same time nanocarbon materials with attractive texture and structure can be produced in a large
amount. Toward a simultaneous bulk production of hydrogen and nanocarbon, catalysts based
on nanometer-scale nickel particles prepared from a hydrotalcite-like anionic clay precursor have
been designed and tested to fit the process goals. For hydrogen production, as the equilibrium
methane conversion of the reaction increases with the increase of the reaction temperature, the
process is commercially more attractive if it can be operated at a temperature higher than 1073
K. However, a nickel catalyst has a maximum activity for nanocarbon production at 923 K.
Modification of the catalyst with doping of copper increased the activation temperature and leads
to a production of nanocarbon with an attractive structure. The feasibility and the challenges
met for the coupling of the two process goals is discussed, and some promising results are
presented in this work.
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