We easily prepared the well characterized ruthenium nanoparticles intercalated
montmorillonite clay catalyst to catalyze amine mediated CO2 hydrogenation
to formic acid. Ru exchanged MMT clay was reduced under hydrogen atmosphere in
PEG (400) solvent system to achieve the Ru metal nanoparticles with average
25.5±2 nm size within the interlayer spacing of MMT clay. 17 different cyclic and
acyclic amines were studied for CO2 loading and further tested as the solvent system
with ethanol for CO2 hydrogenation reaction. The corresponding hydrogenated
product (formic acid) was obtained in high TON /TOF value with 40% ethanolic solution
of tetraethylenepentamine. Six times catalyst recycling is the added advantage
of this proposed reaction protocol.
Keywords: Carbon sequestration, formic acid, hydrogenation reaction, Montmorillonite clay, Ruthenium nanoparticles..
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