Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition
The dispersion of active metal species on the support material of a catalyst is crucial for efficient catalytic re-actions. Surfactant-assisted melt infiltration (SAMI), in which catalytically active components are supported only by heating with a surfactant instead of a solvent, is a straightforwar...
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/114852 2023-05-15T18:11:02+02:00 Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition Cho, Eui Hyun Jeon, Namgi Yoon, Byung Sun Kim, Sujin Yun, Yongju Ko, Chang Hyun Jeon, Namgi Kim, Sujin Yun, Yongju 2023-01 https://oasis.postech.ac.kr/handle/2014.oak/114852 https://doi.org/10.1016/j.apsusc.2022.155244 English eng Elsevier BV Applied Surface Science Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics 0169-4332 https://oasis.postech.ac.kr/handle/2014.oak/114852 doi:10.1016/j.apsusc.2022.155244 52104 Applied Surface Science, v.608, pp.155244 000875129600002 2-s2.0-85140139839 NI CATALYSTS HYDROGEN STORAGE REDUCTION ZEOLITE COKE NH3 MGO Surfactant Melt infiltration Dispersion Nickel Alkaline-earth metal Ammonia Article ART 2023 ftponangunivst https://doi.org/10.1016/j.apsusc.2022.155244 2023-01-27T01:31:33Z The dispersion of active metal species on the support material of a catalyst is crucial for efficient catalytic re-actions. Surfactant-assisted melt infiltration (SAMI), in which catalytically active components are supported only by heating with a surfactant instead of a solvent, is a straightforward method for synthesizing highly dispersed catalysts. In this study, monometallic 10 wt% Ni catalyst and alkaline-earth-metal (Mg, Ca, Sr, and Ba)-doped Ni catalysts supported on the ultra-stable Y (USY) zeolite are prepared using SAMI for ammonia decomposition. The addition of SpanTM60 during the preparation of the Ni/USY catalyst improved its catalytic performance. Moreover, the Mg-promoted Ni/USY catalyst prepared via SAMI exhibited further enhancement in catalytic activity and stability, demonstrating the synergistic effect of the SpanTM60 surfactant and Mg promoter. Detailed characterization revealed that the improved performance of the surfactant-added Mg-promoted catalyst was due to the high dispersion of Ni and MgO particles and the enhanced acidic and basic properties, which affected the number of adsorption sites of NH3 and the kinetic rate-determining step during NH3 decomposition, respectively. The results showed that SAMI could be used to synthesize highly dispersed and active Ni catalysts on zeolites. 1 1 N scie scopus Article in Journal/Newspaper sami Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Applied Surface Science 608 155244 |
institution |
Open Polar |
collection |
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
op_collection_id |
ftponangunivst |
language |
English |
topic |
NI CATALYSTS HYDROGEN STORAGE REDUCTION ZEOLITE COKE NH3 MGO Surfactant Melt infiltration Dispersion Nickel Alkaline-earth metal Ammonia |
spellingShingle |
NI CATALYSTS HYDROGEN STORAGE REDUCTION ZEOLITE COKE NH3 MGO Surfactant Melt infiltration Dispersion Nickel Alkaline-earth metal Ammonia Cho, Eui Hyun Jeon, Namgi Yoon, Byung Sun Kim, Sujin Yun, Yongju Ko, Chang Hyun Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
topic_facet |
NI CATALYSTS HYDROGEN STORAGE REDUCTION ZEOLITE COKE NH3 MGO Surfactant Melt infiltration Dispersion Nickel Alkaline-earth metal Ammonia |
description |
The dispersion of active metal species on the support material of a catalyst is crucial for efficient catalytic re-actions. Surfactant-assisted melt infiltration (SAMI), in which catalytically active components are supported only by heating with a surfactant instead of a solvent, is a straightforward method for synthesizing highly dispersed catalysts. In this study, monometallic 10 wt% Ni catalyst and alkaline-earth-metal (Mg, Ca, Sr, and Ba)-doped Ni catalysts supported on the ultra-stable Y (USY) zeolite are prepared using SAMI for ammonia decomposition. The addition of SpanTM60 during the preparation of the Ni/USY catalyst improved its catalytic performance. Moreover, the Mg-promoted Ni/USY catalyst prepared via SAMI exhibited further enhancement in catalytic activity and stability, demonstrating the synergistic effect of the SpanTM60 surfactant and Mg promoter. Detailed characterization revealed that the improved performance of the surfactant-added Mg-promoted catalyst was due to the high dispersion of Ni and MgO particles and the enhanced acidic and basic properties, which affected the number of adsorption sites of NH3 and the kinetic rate-determining step during NH3 decomposition, respectively. The results showed that SAMI could be used to synthesize highly dispersed and active Ni catalysts on zeolites. 1 1 N scie scopus |
author2 |
Jeon, Namgi Kim, Sujin Yun, Yongju |
format |
Article in Journal/Newspaper |
author |
Cho, Eui Hyun Jeon, Namgi Yoon, Byung Sun Kim, Sujin Yun, Yongju Ko, Chang Hyun |
author_facet |
Cho, Eui Hyun Jeon, Namgi Yoon, Byung Sun Kim, Sujin Yun, Yongju Ko, Chang Hyun |
author_sort |
Cho, Eui Hyun |
title |
Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
title_short |
Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
title_full |
Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
title_fullStr |
Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
title_full_unstemmed |
Magnesium-promoted Ni/USY catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
title_sort |
magnesium-promoted ni/usy catalysts prepared via surfactant-assisted melt infiltration for ammonia decomposition |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
https://oasis.postech.ac.kr/handle/2014.oak/114852 https://doi.org/10.1016/j.apsusc.2022.155244 |
genre |
sami |
genre_facet |
sami |
op_relation |
Applied Surface Science Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics 0169-4332 https://oasis.postech.ac.kr/handle/2014.oak/114852 doi:10.1016/j.apsusc.2022.155244 52104 Applied Surface Science, v.608, pp.155244 000875129600002 2-s2.0-85140139839 |
op_doi |
https://doi.org/10.1016/j.apsusc.2022.155244 |
container_title |
Applied Surface Science |
container_volume |
608 |
container_start_page |
155244 |
_version_ |
1766183746400157696 |