Combustion synthesis of copper ceria solid solution for CO2 conversion to CO via reverse water gas shift reaction

2022 ◽  
Author(s):  
Parisa Ebrahimi ◽  
Anand Kumar ◽  
Majeda Khraisheh
Keyword(s):  
Solid Solution ◽  
Combustion Synthesis ◽  
Water Gas Shift ◽  
Co2 Conversion ◽  
Water Gas Shift Reaction ◽  
Reverse Water Gas Shift ◽  
Shift Reaction ◽  
Water Gas

scholarly journals Effect of Pd and Ir as Promoters in the Activity of Ni/CeZrO2 Catalyst for the Reverse Water-Gas Shift Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1076
Author(s):  
Lucy Idowu Ajakaiye Jensen ◽  
Sara Blomberg ◽  
Christian Hulteberg
Keyword(s):  
Catalytic Activity ◽  
Water Gas Shift ◽  
Intermediate Step ◽  
Co2 Conversion ◽  
Water Gas Shift Reaction ◽  
Co2 Utilization ◽  
Reverse Water Gas Shift ◽  
Rwgs Reaction ◽  
Shift Reaction ◽  
Water Gas

Catalytic conversion of CO2 to CO using reverse water gas shift (RWGS) reaction is a key intermediate step for many CO2 utilization processes. RWGS followed by well-known synthesis gas conversion may emerge as a potential approach to convert CO2 to valuable chemicals and fuels. Nickel (Ni) based catalysts with ceria-zirconia (Ce-Zr) support can be used to tune the metal-support interactions, resulting in a potentially enhanced CO2 hydrogenation rate and elongation of the catalyst lifespan. The thermodynamics of RWGS reaction is favored at high temperature for CO2 conversion. In this paper the effect of Palladium (Pd) and Iridium (Ir) as promoters in the activity of 10 wt%Ni 2 wt%Pd 0.1wt%Ir/CeZrO2 catalyst for the reverse water gas shift reaction was investigated. RWGS was studied for different feed (CO2:H2) ratios. The new active interface between Ni, Pd and Ir particles is proposed to be an important factor in enhancing catalytic activity. 10 wt%Ni 2 wt%Pd 0.1 wt%Ir/CeZrO2 catalyst showed a better activity with CO2 conversion of 52.4% and a CO selectivity of 98% for H2:CO2 (1:1) compared to the activity of 10%Ni/CeZrO2 with CO2 conversion of 49.9% and a CO selectivity of 93%. The catalytic activity for different feed ratios using 10 wt%Ni 2 wt%Pd 0.1 wt%Ir/CeZrO2 were also studied. The use of palladium and iridium boosts the stability and life span of the Ni-based catalysts. This indicates that the catalyst could be used potentially to design RWGS reactors for CO2 utilization units.

scholarly journals Highly Dispersed and Stable Ni/SBA-15 Catalyst for Reverse Water-Gas Shift Reaction

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 790
Author(s):  
Hui Liu ◽  
Luhui Wang
Keyword(s):  
Water Gas Shift ◽  
Impregnation Method ◽  
Good Activity ◽  
Co2 Conversion ◽  
Water Gas Shift Reaction ◽  
Reverse Water Gas Shift ◽  
Highly Dispersed ◽  
Shift Reaction ◽  
Sio2 Support ◽  
Water Gas

A 1%Ni/SBA-15(P) catalyst was synthesized with a P123-assisted impregnation method, which exhibited high CO2 conversion and stability in the reverse water-gas shift reaction. For the 1%Ni/SBA-15(P) catalyst, TEM and TPR characterizations demonstrated that the highly dispersed NiO particles at about 3 nm strongly interacted with the SiO2 support. During reverse water-gas shift reaction, the 1%Ni/SBA-15(P) catalyst exhibited higher CO2 conversion than the 1%Ni/SBA-15 catalyst prepared by the conventional impregnation method without P123. The CO2 conversion of the 1%Ni/SBA-15(P) catalyst at 700 °C was 33.7%, which was three times that of the 1%Ni/SBA-15 catalyst. Moreover, the former catalyst was stable at 700 °C within 1000 min. The good activity and stability of the 1%Ni/SBA-15(P) catalyst was owing to small Ni particles that strongly interacted with SBA-15.

Ni/Ce–Zr–O catalyst for high CO2 conversion during reverse water gas shift reaction (RWGS)

2015 ◽  
Vol 40 (46) ◽  
pp. 15985-15993 ◽  
Author(s):  
Feng-man Sun ◽  
Chang-feng Yan ◽  
Zhi-da Wang ◽  
Chang-qing Guo ◽  
Shi-lin Huang
Keyword(s):  
Water Gas Shift ◽  
Co2 Conversion ◽  
Water Gas Shift Reaction ◽  
High Co2 ◽  
Reverse Water Gas Shift ◽  
Shift Reaction ◽  
Water Gas

Boosting reverse water-gas shift reaction activity of Pt nanoparticles through light doping of W

2021 ◽  
Author(s):  
Daiya Kobayashi ◽  
Hirokazu Kobayashi ◽  
Kohei Kusada ◽  
Tomokazu Yamamoto ◽  
Takaaki Toriyama ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Water Gas Shift ◽  
Solid Solution Alloy ◽  
Alloy Nanoparticles ◽  
Water Gas Shift Reaction ◽  
Reverse Water Gas Shift ◽  
Rwgs Reaction ◽  
Shift Reaction ◽  
Water Gas ◽  
First Time

We report PtW solid-solution alloy nanoparticles (NPs) as a reverse water-gas shift (RWGS) reaction catalyst for the first time. Atomic-level alloying of Pt and W significantly enhanced the RWGS reaction activity of Pt NPs.

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