Comparison of CO2 hydrogenation in a catalytic reactor and in a dielectric-barrier discharge

Exploring the feasibility of liquid fuel synthesis from CO2 under cold plasma discharge: role of plasma discharge in binary metal oxide surface modification

“…The detailed NiO–Fe 2 O 3 catalyst synthesis procedure has been reported elsewhere. 31 Briefly, various amounts of Ni(NO 3 ) 2 ·6H 2 O (99% pure) were mixed with Fe(NO 3 ) 3 ·9H 2 O (99% pure) and dissolved in 50 mL of ethanol (96% pure) and a homogeneous solution was made with constant stirring. Then, the precursor was precipitated as hydroxide sol using 10% NH 4 OH solution at a flow rate of 1 mL min −1 .…”

“…In terms of DBD plasma, only a handful of studies have focused on the conversion of CO 2 to oxygenate. For instance, Bill et al 31 showed around 0.2% CH 3 OH yield by using 400 W input power at a 250 mL min −1 feed flow rate. Interestingly, the commercial CH 3 OH catalyst Cu/ZnO/Al 2 O 3 under atmospheric pressure shows 12% CO 2 conversion and a CH 3 OH selectivity of 0.4%, but upon increasing pressure to the 8 bar, the conversion rose to 14% with 10% CH 3 OH selectivity.…”

A Review of Non-Thermal Plasma Technology: A novel solution for CO2 conversion and utilization

“…Liu et al [81] provided the radical reaction mechanism for the hydrogenation of CO 2 [384] in a review on NTP approaches in CO 2 utilization. Bill et al [385] carried out the hydrogenation of CO 2 to CH 3 OH in a tubular packed bed reactor using Cu-based catalysts and a comparative approach was also investigated using a DBD reactor. It was realized that the simultaneous presence of plasma discharge and a catalyst led to a considerable decrease in the optimum temperature range attractive alternative to thermal processes for converting inert CO 2 emissions into value-added chemicals and fuels due to its low power requirements and non-equilibrium characteristics [115,283].…”

Methanol synthesis from CO2 using Ni and Cu supported Fe catalytic system: Understanding the role of nonthermal plasma surface discharge

“…Only a few reports are available for CO 2 hydrogenation to CH 3 OH. Bill et al [32] have reported about 0.2% of CH 3 OH yield with 400 W and at 250 ml/min feed flow using a DBD reactor. Wang et al [18] have produced CH 3 OH, at atmospheric pressure, using water as a ground electrode in DBD reactor.…”

“…To attain very high‐energy efficiencies, we have to compensate for the conversion efficiency. [ 32 ] To solve these crises, several catalysts have been used as packing material in the NTP reactor. And it is reported that the packing material not only assists the CO 2 dissociation but it also decreases the breakdown voltage; thus the energy efficiency is increased by a factor of two.…”