Effect of N2 and Ar on CO2 conversion with segmented micro-plasma reactor

2021 ◽  
Author(s):  
Baowei Wang ◽  
Xiaoyan Li ◽  
Xiaoxi Wang ◽  
Huijuan Su ◽  
Bo Zhang
Keyword(s):  
Plasma Reactor ◽  
Co2 Conversion

scholarly journals CO2 Conversion in a Microwave Plasma Reactor in the Presence of N2: Elucidating the Role of Vibrational Levels

2015 ◽  
Vol 119 (23) ◽  
pp. 12815-12828 ◽  
Author(s):  
Stijn Heijkers ◽  
Ramses Snoeckx ◽  
Tomáš Kozák ◽  
Tiago Silva ◽  
Thomas Godfroid ◽  
...  
Keyword(s):  
Microwave Plasma ◽  
Plasma Reactor ◽  
Co2 Conversion ◽  
Vibrational Levels

scholarly journals The Potential Use of Core-Shell Structured Spheres in a Packed-Bed DBD Plasma Reactor for CO2 Conversion

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 530
Author(s):  
Yannick Uytdenhouwen ◽  
Vera Meynen ◽  
Pegie Cool ◽  
Annemie Bogaerts
Keyword(s):  
Energy Efficiency ◽  
Plasma Reactor ◽  
Spray Coating ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Core Material ◽  
Core Shell ◽  
Co2 Conversion ◽  
Dbd Plasma ◽  
Specific Material

This work proposes to use core-shell structured spheres to evaluate whether it allows to individually optimize bulk and surface effects of a packing material, in order to optimize conversion and energy efficiency. Different core-shell materials have been prepared by spray coating, using dense spheres (as core) and powders (as shell) of SiO2, Al2O3, and BaTiO3. The materials are investigated for their performance in CO2 dissociation and compared against a benchmark consisting of a packed-bed reactor with the pure dense spheres, as well as an empty reactor. The results in terms of CO2 conversion and energy efficiency show various interactions between the core and shell material, depending on their combination. Al2O3 was found as the best core material under the applied conditions here, followed by BaTiO3 and SiO2, in agreement with their behaviour for the pure spheres. Applying a thin shell layer on the cores showed equal performance between the different shell materials. Increasing the layer thickness shifts this behaviour, and strong combination effects were observed depending on the specific material. Therefore, this method of core-shell spheres has the potential to allow tuning of the packing properties more closely to the application by designing an optimal combination of core and shell.

Catalysts for hydrogenation of CO2 into components of motor fuels

2020 ◽  
pp. 1-18
Author(s):  
Yu.V. Bilokopytov ◽  
◽  
S.L. Melnykova ◽  
N.Yu. Khimach ◽  
◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Heterogeneous Catalysts ◽  
Fossil Fuels ◽  
Catalyst Stability ◽  
Co2 Conversion ◽  
Active Components ◽  
Synthesis Conditions ◽  
Hydrogenation Of Co2 ◽  
Mesoporous Zeolites ◽  
Motor Fuels

CO2 is a harmful greenhouse gas, a product of chemical emissions, the combustion of fossil fuels and car exhausts, and it is a widely available source of carbon. The review considers various ways of hydrogenation of carbon dioxide into components of motor fuels - methanol, dimethyl ether, ethanol, hydrocarbons - in the presence of heterogeneous catalysts. At each route of conversion of CO2 (into oxygenates or hydrocarbons) the first stage is the formation of CO by the reverse water gas shift (rWGS) reaction, which must be taken into account when catalysts of process are choosing. The influence of chemical nature, specific surface area, particle size and interaction between catalyst components, as well as the method of its production on the CO2 conversion processes is analyzed. It is noted that the main active components of CO2 conversion into methanol are copper atoms and ions which interact with the oxide components of the catalyst. There is a positive effect of other metals oxides additives with strong basic centers on the surface on the activity of the traditional copper-zinc-aluminum oxide catalyst for the synthesis of methanol from the synthesis gas. The most active catalysts for the synthesis of DME from CO2 and H2 are bifunctional. These catalysts contain both a methanol synthesis catalyst and a dehydrating component, such as mesoporous zeolites with acid centers of weak and medium strength, evenly distributed on the surface. The synthesis of gasoline hydrocarbons (≥ C5) is carried out through the formation of CO or CH3OH and DME as intermediates on multifunctional catalysts, which also contain zeolites. Hydrogenation of CO2 into ethanol can be considered as an alternative to the synthesis of ethanol through the hydration of ethylene. High activation energy of carbon dioxide, harsh synthesis conditions as well as high selectivity for hydrocarbons, in particular methane remains the main problems. Further increase of selectivity and efficiency of carbon dioxide hydrogenation processes involves the use of nanocatalysts taking into account the mechanism of CO2 conversion reactions, development of methods for removing excess water as a by-product from the reaction zone and increasing catalyst stability over time.

ON-LINE TEMPERATURE MEASUREMENT IN A PLASMA REACTOR FOR FULLERENE SYNTHESIS

2003 ◽  
Vol 7 (1) ◽  
pp. 43-49 ◽  
Author(s):  
S. Abanades ◽  
J. M. Badie ◽  
Gilles Flamant ◽  
L. Fulcheri ◽  
J. Gonzales-Aguilar ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Plasma Reactor ◽  
On Line ◽  
Line Temperature

USE OF THE TRIPLE TORCH PLASMA REACTOR IN TECHNOLOGY OF PESTICIDE PROCESSING

2003 ◽  
Vol 7 (3) ◽  
pp. 373-382
Author(s):  
A. L. Mosse ◽  
V. D. Shimanovich ◽  
E. M. Ermolaeva ◽  
A. N. Knak ◽  
L. I. Krasovskaya
Keyword(s):  
Plasma Reactor ◽  
Triple Torch Plasma Reactor
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