Fig. 4: Mechanism of CO2 hydrogenation on Co@Si0.95 catalyst.
From: Silica accelerates the selective hydrogenation of CO2 to methanol on cobalt catalysts
a In situ DRIFTS spectra of Co@Si0.95 catalyst at 350 °C in contact with CO2 + H2. b Time-dependent DRIFTS band intensities characterizing surface *HCOO and *CH3O species during the CO2 + H2 reaction on Co@Si0.95 at 350 °C. c In situ C 1s XPS spectra of Co@Si0.95 in contact with 1.2 mbar of CO2 + H2 atmosphere with controlled ratios at 250 °C.
