Effect of pd and ir as promoters in the activity of Ni/CeZrO2 catalyst for the reverse water-gas shift reaction
Ajakaiye Jensen, Lucy Idowu LU ; Blomberg, Sara LU and Hulteberg, Christian LU
(2021)
In Catalysts
11(9).
- Abstract
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... (More)
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.
(Less)
- author
- Ajakaiye Jensen, Lucy Idowu
LU
; Blomberg, Sara
LU
and Hulteberg, Christian
LU
- organization
- publishing date
- 2021-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Catalysis, Ni/CeZrO catalyst, Promoter, Reverse water-gas shift reaction
- in
- Catalysts
- volume
- 11
- issue
- 9
- article number
- 1076
- publisher
- MDPI AG
- external identifiers
-
- scopus:85114363624
- ISSN
- 2073-4344
- DOI
- 10.3390/catal11091076
- language
- English
- LU publication?
- yes
- id
- 52724aa9-c788-42a6-9f26-64640e61fab7
- date added to LUP
- 2021-09-30 11:00:36
- date last changed
- 2023-12-22 02:49:56
@article{52724aa9-c788-42a6-9f26-64640e61fab7,
abstract = {{<p>Catalytic conversion of CO<sub>2</sub> to CO using reverse water gas shift (RWGS) reaction is a key intermediate step for many CO<sub>2</sub> utilization processes. RWGS followed by well-known synthesis gas conversion may emerge as a potential approach to convert CO<sub>2</sub> 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 CO<sub>2</sub> hydrogenation rate and elongation of the catalyst lifespan. The thermodynamics of RWGS reaction is favored at high temperature for CO<sub>2</sub> 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/CeZrO<sub>2</sub> catalyst for the reverse water gas shift reaction was investigated. RWGS was studied for different feed (CO<sub>2</sub>:H<sub>2</sub>) 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/CeZrO<sub>2</sub> catalyst showed a better activity with CO<sub>2</sub> conversion of 52.4% and a CO selectivity of 98% for H<sub>2</sub>:CO<sub>2</sub> (1:1) compared to the activity of 10%Ni/CeZrO<sub>2</sub> with CO<sub>2</sub> 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/CeZrO<sub>2</sub> 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 CO<sub>2</sub> utilization units.</p>}},
author = {{Ajakaiye Jensen, Lucy Idowu and Blomberg, Sara and Hulteberg, Christian}},
issn = {{2073-4344}},
keywords = {{Catalysis; Ni/CeZrO catalyst; Promoter; Reverse water-gas shift reaction}},
language = {{eng}},
number = {{9}},
publisher = {{MDPI AG}},
series = {{Catalysts}},
title = {{Effect of pd and ir as promoters in the activity of Ni/CeZrO<sub>2</sub> catalyst for the reverse water-gas shift reaction}},
url = {{http://dx.doi.org/10.3390/catal11091076}},
doi = {{10.3390/catal11091076}},
volume = {{11}},
year = {{2021}},
}