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Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation

Application of CO2 methanation, especially in CO2-rich gas fields, could potentially provide additional value to the synthetic natural gas production. In this study, highly active vanadium (V2O5)-promoted Ni/KCC-1 catalysts with 5% nickel content were prepared using a co-impregnation method for CO2...

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Main Authors: Hamid, Muhamed Yusuf Shahul, Abdul Jalil, Aishah, Abdul Rahman, Anis Farhana, Tuan Abdullah, Tuan Amran
Format: Article
Published: Royal Society of Chemistry 2019
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/89239/
http://dx.doi.org/10.1039/c8re00312b
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spelling my.utm.892392021-02-22T06:01:15Z http://eprints.utm.my/id/eprint/89239/ Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation Hamid, Muhamed Yusuf Shahul Abdul Jalil, Aishah Abdul Rahman, Anis Farhana Tuan Abdullah, Tuan Amran TP Chemical technology Application of CO2 methanation, especially in CO2-rich gas fields, could potentially provide additional value to the synthetic natural gas production. In this study, highly active vanadium (V2O5)-promoted Ni/KCC-1 catalysts with 5% nickel content were prepared using a co-impregnation method for CO2 methanation reaction. The influence of V2O5 on the textural properties, basicity and reducibility of the 5Ni/KCC-1 catalysts was systematically investigated. It was found that addition of V2O5 enhances the basicity of the catalysts; however, it decreases the surface area and pore volume. The amphoteric properties of V2O5 provide additional adsorption sites of CO2 producing more reactive unidentate CO2 adsorbed species. The presence of V2O5 also improved the dispersion and exposed more Ni species. This leads to an increased amount of reducible NiO species. Compared to 5Ni/KCC-1, the V2O5-Ni/KCC-1 series were active at lower temperature. The light off temperature for V2O5-Ni/KCC-1 was 423 K compared to 473 K for 5Ni/KCC-1. At 623 K, the 7.5V2O5-Ni/KCC-1 reaches 94.4% CO2 conversion, 15% higher than 5Ni/KCC-1. The presence of O2 negatively affects the catalytic activity as O2 interferes with the CO2 adsorption sites. The analysis of variance (ANOVA) indicates that the reaction temperature heavily influences the CH4 yield followed by the reduction temperature and H2:CO2 ratio. The optimized conditions by the RSM are a reduction temperature of 696.9 K, a reaction temperature of 766.5 K and a H2:CO2 ratio of 5.1. Royal Society of Chemistry 2019-06 Article PeerReviewed Hamid, Muhamed Yusuf Shahul and Abdul Jalil, Aishah and Abdul Rahman, Anis Farhana and Tuan Abdullah, Tuan Amran (2019) Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation. Reaction Chemistry and Engineering, 4 (6). pp. 1126-1135. ISSN 2058-9883 http://dx.doi.org/10.1039/c8re00312b DOI:10.1039/c8re00312b
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Hamid, Muhamed Yusuf Shahul
Abdul Jalil, Aishah
Abdul Rahman, Anis Farhana
Tuan Abdullah, Tuan Amran
Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation
description Application of CO2 methanation, especially in CO2-rich gas fields, could potentially provide additional value to the synthetic natural gas production. In this study, highly active vanadium (V2O5)-promoted Ni/KCC-1 catalysts with 5% nickel content were prepared using a co-impregnation method for CO2 methanation reaction. The influence of V2O5 on the textural properties, basicity and reducibility of the 5Ni/KCC-1 catalysts was systematically investigated. It was found that addition of V2O5 enhances the basicity of the catalysts; however, it decreases the surface area and pore volume. The amphoteric properties of V2O5 provide additional adsorption sites of CO2 producing more reactive unidentate CO2 adsorbed species. The presence of V2O5 also improved the dispersion and exposed more Ni species. This leads to an increased amount of reducible NiO species. Compared to 5Ni/KCC-1, the V2O5-Ni/KCC-1 series were active at lower temperature. The light off temperature for V2O5-Ni/KCC-1 was 423 K compared to 473 K for 5Ni/KCC-1. At 623 K, the 7.5V2O5-Ni/KCC-1 reaches 94.4% CO2 conversion, 15% higher than 5Ni/KCC-1. The presence of O2 negatively affects the catalytic activity as O2 interferes with the CO2 adsorption sites. The analysis of variance (ANOVA) indicates that the reaction temperature heavily influences the CH4 yield followed by the reduction temperature and H2:CO2 ratio. The optimized conditions by the RSM are a reduction temperature of 696.9 K, a reaction temperature of 766.5 K and a H2:CO2 ratio of 5.1.
format Article
author Hamid, Muhamed Yusuf Shahul
Abdul Jalil, Aishah
Abdul Rahman, Anis Farhana
Tuan Abdullah, Tuan Amran
author_facet Hamid, Muhamed Yusuf Shahul
Abdul Jalil, Aishah
Abdul Rahman, Anis Farhana
Tuan Abdullah, Tuan Amran
author_sort Hamid, Muhamed Yusuf Shahul
title Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation
title_short Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation
title_full Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation
title_fullStr Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation
title_full_unstemmed Enhanced reactive CO2 species formation via V2O5-promoted NI/KCC-1 for low temperature activation of CO2 methanation
title_sort enhanced reactive co2 species formation via v2o5-promoted ni/kcc-1 for low temperature activation of co2 methanation
publisher Royal Society of Chemistry
publishDate 2019
url http://eprints.utm.my/id/eprint/89239/
http://dx.doi.org/10.1039/c8re00312b
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score 13.211869

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