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 &#x03B3;-Al<sub>2</sub>O<sub>3</sub> supported metal catalysts (Cu/&#x03B3;-Al<sub>2</sub>O<sub>3</sub>, Mn/&#x03B3;-Al<sub>2</sub>O<sub>3</sub>, and Cu-Mn/&#x03B3;-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/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalyst shows the best catalytic activity for CO production, followed by the Cu-Mn/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> and Cu/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalysts. The presence of the Mn/&#x03B3;-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/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalyst significantly enhances the energy efficiency of CO production by 116%, whereas packing the Cu/&#x03B3;-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

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Title: Plasma-Catalytic CO2 Hydrogenation at Low Temperatures
Authors: Yuxuan Zeng;Xin Tu
subject: plasma catalysis|CO&#x2082; reduction|CO&#x2082; 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 &#x03B3;-Al<sub>2</sub>O<sub>3</sub> supported metal catalysts (Cu/&#x03B3;-Al<sub>2</sub>O<sub>3</sub>, Mn/&#x03B3;-Al<sub>2</sub>O<sub>3</sub>, and Cu-Mn/&#x03B3;-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/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalyst shows the best catalytic activity for CO production, followed by the Cu-Mn/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> and Cu/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalysts. The presence of the Mn/&#x03B3;-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/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalyst significantly enhances the energy efficiency of CO production by 116%, whereas packing the Cu/&#x03B3;-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 SizeFormat 
7366584.pdf2.69 MBAdobe PDFThumbnail
Preview File
Title: Plasma-Catalytic CO2 Hydrogenation at Low Temperatures
Authors: Yuxuan Zeng;Xin Tu
subject: plasma catalysis|CO&#x2082; reduction|CO&#x2082; 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 &#x03B3;-Al<sub>2</sub>O<sub>3</sub> supported metal catalysts (Cu/&#x03B3;-Al<sub>2</sub>O<sub>3</sub>, Mn/&#x03B3;-Al<sub>2</sub>O<sub>3</sub>, and Cu-Mn/&#x03B3;-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/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalyst shows the best catalytic activity for CO production, followed by the Cu-Mn/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> and Cu/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalysts. The presence of the Mn/&#x03B3;-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/&#x03B3;-Al<sub>2</sub>O<sub>3</sub> catalyst significantly enhances the energy efficiency of CO production by 116%, whereas packing the Cu/&#x03B3;-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 SizeFormat 
7366584.pdf2.69 MBAdobe PDFThumbnail
Preview File