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

2021 ◽  
Author(s):  
Jiajie Wang ◽  
Mohammad S. AlQahtani ◽  
Xiaoxing Wang ◽  
Sean D. Knecht ◽  
Sven G. Bilén ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Atmospheric Pressure ◽  
Dbd Plasma ◽  
Carbon Dioxide Hydrogenation ◽  
One Step ◽  
Higher Hydrocarbons

C2+ hydrocarbons are selectively produced in one-step catalytic CO2 conversion via designing the catalyst-bed configuration under non-thermal DBD plasma operating at low temperature and atmospheric pressure.

In situ TEM study of the Ru-RuOx/TiO2 catalyst for low temperature methanation of carbondioxide

1990 ◽  
Vol 48 (4) ◽  
pp. 288-289
Author(s):  
P. Ruterana ◽  
P-A. Buffat (I2M) ◽  
K.R Thampi ◽  
M. Graetzel (ICP)
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Surface Area ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Metal Particles ◽  
In Situ Tem ◽  
Tio2 Catalyst ◽  
Optimal Loading

The Ru-RuOx/TiO2 catalyst has been shown to be able to produce methane from hydrogen and carbon dioxide at room temperature and atmospheric pressure at reasonably high rates (TOF: 10-6 at 25C and 10-4 at 90C). The best results were obtained using the P25 support (Degussa 80% anatase and 20% rutile) in the 55-60 m2/g surface area range. The optimal loading for the metal is 3.8% Ru metal.We found that in the most active catalysts, the metal (>90%) is selectively loaded on the rutile crystallites. This distribution shows up clearly in a 500C reduced sample (fig.l) in which the size of the metal particles has increased.

Silver Chloride/Triphenylphosphine-Promoted Carboxylation of Arylboronic Esters with Carbon Dioxide at Atmospheric Pressure

2018 ◽  
Vol 14 (8) ◽  
Author(s):  
Zhi-Hua Zhou ◽  
Chun-Xiang Guo ◽  
Jia-Ning Xie ◽  
Kai-Xuan Liu ◽  
Liang-Nian He
Keyword(s):  
Carbon Dioxide ◽  
Atmospheric Pressure ◽  
Silver Chloride

scholarly journals Low-temperature and atmospheric pressure plasma for palm biodiesel hydrogenation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Grittima Kongprawes ◽  
Doonyapong Wongsawaeng ◽  
Kanokwan Ngaosuwan ◽  
Worapon Kiatkittipong ◽  
Suttichai Assabumrungrat
Keyword(s):  
Fatty Acid ◽  
Cloud Point ◽  
Atmospheric Pressure ◽  
Oxidation Stability ◽  
Acid Methyl Ester ◽  
Energy Utilization ◽  
Superior Performance ◽  
Partial Hydrogenation ◽  
Dbd Plasma ◽  
Plasma Hydrogenation

AbstractPartially hydrogenated fatty acid methyl ester (H-FAME) is conventionally produced through partial hydrogenation under high pressure and elevated temperature in the presence of a catalyst. Herein, a novel green, catalyst-free, non-thermal and atmospheric pressure dielectric barrier discharge (DBD) plasma was employed instead of a conventional method to hydrogenate palm FAME. H-FAME became more saturated with the conversion of C18:2 and C18:3 of 47.4 and 100%, respectively, at 100 W input power, 1 mm gas-filled gap size and 80% H2 in the mixed gas at room temperature for 5 h, causing a reduction of the iodine value from 50.2 to 43.5. Oxidation stability increased from 12.8 to 20 h while a cloud point changed from 13.5 to 16 °C. Interestingly, DBD plasma hydrogenation resulted in no trans-fatty acid formation which provided a positive effect on the cloud point. This green DBD plasma system showed a superior performance to a conventional catalytic reaction. It is an alternative method that is safe from explosion due to the mild operating condition, as well as being highly environmentally friendly by reducing waste and energy utilization from the regeneration process required for a catalytic process. This novel green plasma hydrogenation technique could also be applied to other liquid-based processes.

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