Please use this identifier to cite or link to this item:
http://localhost/handle/Hannan/658357
Title: | Plasma-Catalytic CO2 Hydrogenation at Low Temperatures |
Authors: | Yuxuan Zeng;Xin Tu |
subject: | plasma catalysis|CO₂ reduction|CO₂ hydrogenation|reverse water-gas shift (RWGS) reaction.|dielectric barrier discharge (DBD) |
Year: | 2016 |
Publisher: | IEEE |
Abstract: | A coaxial packed-bed dielectric barrier discharge (DBD) reactor has been developed for plasma-catalytic CO<sub>2</sub> hydrogenation at low temperatures and atmospheric pressure. Reverse water-gas shift reaction and carbon dioxide methanation have been found dominant in the plasma CO<sub>2</sub> hydrogenation process. The results show that the H<sub>2</sub>/CO<sub>2</sub> molar ratio significantly affects the CO<sub>2</sub> conversion and the yield of CO and CH<sub>4</sub>. The effect of different γ-Al<sub>2</sub>O<sub>3</sub> supported metal catalysts (Cu/γ-Al<sub>2</sub>O<sub>3</sub>, Mn/γ-Al<sub>2</sub>O<sub>3</sub>, and Cu-Mn/γ-Al<sub>2</sub>O<sub>3</sub>) on the performance of the CO<sub>2</sub> hydrogenation has been investigated. Compared with the plasma CO<sub>2</sub> hydrogenation without a catalyst, the combination of plasma with these catalysts enhances the conversion of CO<sub>2</sub> by 6.7%-36%. The Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst shows the best catalytic activity for CO production, followed by the Cu-Mn/γ-Al<sub>2</sub>O<sub>3</sub> and Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalysts. The presence of the Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst in the plasma process significantly increases the yield of CO by 114%, compared with the plasma reaction in the absence of a catalyst. In addition, we find that combining plasma with the Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst significantly enhances the energy efficiency of CO production by 116%, whereas packing the Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalyst into the DBD reactor only increases the energy efficiency of CO production by 52%. |
URI: | http://localhost/handle/Hannan/157477 http://localhost/handle/Hannan/658357 |
ISSN: | 0093-3813 1939-9375 |
volume: | 44 |
issue: | 4 |
Appears in Collections: | 2016 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
7366584.pdf | 2.69 MB | Adobe PDF | ![]() Preview File |
Title: | Plasma-Catalytic CO2 Hydrogenation at Low Temperatures |
Authors: | Yuxuan Zeng;Xin Tu |
subject: | plasma catalysis|CO₂ reduction|CO₂ hydrogenation|reverse water-gas shift (RWGS) reaction.|dielectric barrier discharge (DBD) |
Year: | 2016 |
Publisher: | IEEE |
Abstract: | A coaxial packed-bed dielectric barrier discharge (DBD) reactor has been developed for plasma-catalytic CO<sub>2</sub> hydrogenation at low temperatures and atmospheric pressure. Reverse water-gas shift reaction and carbon dioxide methanation have been found dominant in the plasma CO<sub>2</sub> hydrogenation process. The results show that the H<sub>2</sub>/CO<sub>2</sub> molar ratio significantly affects the CO<sub>2</sub> conversion and the yield of CO and CH<sub>4</sub>. The effect of different γ-Al<sub>2</sub>O<sub>3</sub> supported metal catalysts (Cu/γ-Al<sub>2</sub>O<sub>3</sub>, Mn/γ-Al<sub>2</sub>O<sub>3</sub>, and Cu-Mn/γ-Al<sub>2</sub>O<sub>3</sub>) on the performance of the CO<sub>2</sub> hydrogenation has been investigated. Compared with the plasma CO<sub>2</sub> hydrogenation without a catalyst, the combination of plasma with these catalysts enhances the conversion of CO<sub>2</sub> by 6.7%-36%. The Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst shows the best catalytic activity for CO production, followed by the Cu-Mn/γ-Al<sub>2</sub>O<sub>3</sub> and Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalysts. The presence of the Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst in the plasma process significantly increases the yield of CO by 114%, compared with the plasma reaction in the absence of a catalyst. In addition, we find that combining plasma with the Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst significantly enhances the energy efficiency of CO production by 116%, whereas packing the Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalyst into the DBD reactor only increases the energy efficiency of CO production by 52%. |
URI: | http://localhost/handle/Hannan/157477 http://localhost/handle/Hannan/658357 |
ISSN: | 0093-3813 1939-9375 |
volume: | 44 |
issue: | 4 |
Appears in Collections: | 2016 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
7366584.pdf | 2.69 MB | Adobe PDF | ![]() Preview File |
Title: | Plasma-Catalytic CO2 Hydrogenation at Low Temperatures |
Authors: | Yuxuan Zeng;Xin Tu |
subject: | plasma catalysis|CO₂ reduction|CO₂ hydrogenation|reverse water-gas shift (RWGS) reaction.|dielectric barrier discharge (DBD) |
Year: | 2016 |
Publisher: | IEEE |
Abstract: | A coaxial packed-bed dielectric barrier discharge (DBD) reactor has been developed for plasma-catalytic CO<sub>2</sub> hydrogenation at low temperatures and atmospheric pressure. Reverse water-gas shift reaction and carbon dioxide methanation have been found dominant in the plasma CO<sub>2</sub> hydrogenation process. The results show that the H<sub>2</sub>/CO<sub>2</sub> molar ratio significantly affects the CO<sub>2</sub> conversion and the yield of CO and CH<sub>4</sub>. The effect of different γ-Al<sub>2</sub>O<sub>3</sub> supported metal catalysts (Cu/γ-Al<sub>2</sub>O<sub>3</sub>, Mn/γ-Al<sub>2</sub>O<sub>3</sub>, and Cu-Mn/γ-Al<sub>2</sub>O<sub>3</sub>) on the performance of the CO<sub>2</sub> hydrogenation has been investigated. Compared with the plasma CO<sub>2</sub> hydrogenation without a catalyst, the combination of plasma with these catalysts enhances the conversion of CO<sub>2</sub> by 6.7%-36%. The Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst shows the best catalytic activity for CO production, followed by the Cu-Mn/γ-Al<sub>2</sub>O<sub>3</sub> and Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalysts. The presence of the Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst in the plasma process significantly increases the yield of CO by 114%, compared with the plasma reaction in the absence of a catalyst. In addition, we find that combining plasma with the Mn/γ-Al<sub>2</sub>O<sub>3</sub> catalyst significantly enhances the energy efficiency of CO production by 116%, whereas packing the Cu/γ-Al<sub>2</sub>O<sub>3</sub> catalyst into the DBD reactor only increases the energy efficiency of CO production by 52%. |
URI: | http://localhost/handle/Hannan/157477 http://localhost/handle/Hannan/658357 |
ISSN: | 0093-3813 1939-9375 |
volume: | 44 |
issue: | 4 |
Appears in Collections: | 2016 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
7366584.pdf | 2.69 MB | Adobe PDF | ![]() Preview File |