Boosting methanol productionviaplasma catalytic CO₂hydrogenation over a MnO_x/ZrO₂catalyst

Abstract

Hydrogenation of carbon dioxide (CO2) to methanol is considered as a potential approach to simultaneously mitigate the global warming and energy crisis issues. As an effective and economic oxide, MnOx...

Plasma catalytic CO2 hydrogenation to methanol: The interaction between MnOx and ZrO2

“…The CO 2 conversion and methanol yield for plasma only were 5% and 0.0 mg/h, respectively, which was reported in our previous work. [ 19 ] This suggested that the catalyst hardly changed the CO 2 conversion in this plasma catalysis process and it mainly contributed to the formation of methanol. The ZrO 2 alone hardly converted CO 2 to methanol.…”

“…They could not be hydrogenated in the plasma catalysis process, which was proved in our previous work. [ 19 ] Their formation could be ascribed to the adsorption of CO 2 by the active oxygen species on the surface of the catalyst. Only (bi)carbonates species were distinguished under the condition without plasma.…”

“…The details of the plasma catalysis reactor were described in our previous work. [ 19 ] Briefly, the reactor consisted of two stainless‐steel electrodes and a quartz dielectric barrier. The length and gap of plasma zone were fixed at 50 and 1.2 mm, respectively.…”

“…A designed in situ DRIFTS cell was used for the measurement of plasma catalytic CO 2 hydrogenation. [ 19 ] The spectra were recorded with a resolution of 4 cm −1 and 32 scans. The samples were prereduced before the test.…”

“…[14][15][16][17][18] In our previous work, an unconventional MnO xbased catalyst was employed and exhibited a good potential in CO 2 hydrogenation to methanol reaction in the plasma catalysis process. [19] A new reaction route could be established and an enhanced methanol production with a yield of 5.4 mg/h was obtained. Unlike other catalysts showing a good performance correlation between the plasma catalysis process and thermal catalysis process, the MnO x catalyst exhibited poor activity for CO 2 hydrogenation in thermal catalysis process.…”