One-step plasma-enabled catalytic carbon dioxide hydrogenation to higher hydrocarbons: significance of catalyst-bed configuration

Abstract

Effectively converting CO2 into fuels and value-added chemicals remains a major challenge in catalysis, especially under mild conditions. In this study, we report a one-step non-thermal plasma-enabled catalytic process for...

Non-thermal plasma-assisted rapid hydrogenolysis of polystyrene to high yield ethylene

“…Besides the reaction time, other reaction parameters, including H 2 flow rate (ν H2 ), partial pressure (P H2 ), mass of PS (m PS ) and power input (P) were also examined and exhibited certain influences on the PS hydrogenolysis properties (Supplementary Note 3, Supplementary Figs. [23][24][25][26][27]. D 2 isotope labeling experiments and proposed reaction pathway.…”

“…All the calculated reactions are exothermic except for the formation of C 2 H 4 and C 3 H 6 (Supplementary Table 8). The reactor temperature after 12 min of reaction is measured to be about 200 °C (Supplementary Table 9), which should be resultant of accumulated plasma heat effect and would benefit endothermic C 2 H 4 formation 26,27 , leading to improvement in kinetics and yields shown in Fig. 1b.…”

Dielectric Barrier Discharge Plasma-Assisted Catalytic CO2 Hydrogenation: Synergy of Catalyst and Plasma

“…In another scenario where C 2 + hydrocarbons were the targeted products, the Al 2 O 3 packing in the DBD reactor promoted the chain-growth reaction of CH x derived from the activation of plasma. Additionally, when the input power increased to 10 W from 4 W, 74% CO 2 conversion and 46.5% C 2 + selectivity were delivered at 25 • C (Table 1) [59]. Apart from Al 2 O 3 , transition metal oxide ZnO is proven effective in CO 2 hydrogenation assisted with DBD plasma.…”

“…Owing to the inherent positive contribution of DBD plasma and Co metallic sites, the temperature to reach the maximum CH 4 yield was reduced by 40 • C [52]. In another scenario where the DBD plasma voltage was 13.6 kV, furnace temperature was 250 • C and H 2 /CO 2 was 3, CO 2 was selectively converted to CH 4 on Co surface; interestingly, CH x species formed in plasma were immediately terminated by the H species also produced in plasma, leading to a dominant amount of CH 4 and only a trace amount of longer-chain hydrocarbons [59]. Lan et al [58] further compared a series of active metals in DBD plasma-catalytic production of CH 4 and lower hydrocarbons via CO 2 hydrogenation.…”

Metal–Organic Frameworks (MOFs) and Materials Derived from MOFs as Catalysts for the Development of Green Processes

“…CO 2 is one of the pollutants found in greater concentration in the atmosphere and its emission is mainly due to the use of fossil fuels (heating, automobiles, industrial chimneys) [1,2]. Today there are many proposals to generate a cleaner and healthier environment for living, but one of the proposals that attract the most attention is the conversion of CO 2 to hydrocarbon molecules, which can later be used as fuel in different areas [3][4][5]. This proposal largely solves the problem of atmospheric pollution on the planet and opens up new areas for the development and research of renewable energies [4].…”