Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review
Catalytic isomerization is a process used to increase the octane number of light naphtha fraction and thus aids in extending the life of automobile engines. Researchers are still working to prepare more effective and less expensive isomerization catalysts to replace the costly previous catalysts. O...
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| Language: | English |
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Al-Nahrain Journal for Engineering Sciences
2024-12-01
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| Series: | مجلة النهرين للعلوم الهندسية |
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| Online Access: | https://nahje.com/index.php/main/article/view/1243 |
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| author | Alaa J. Awadh Saad H. Ammar |
| author_facet | Alaa J. Awadh Saad H. Ammar |
| author_sort | Alaa J. Awadh |
| collection | DOAJ |
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Catalytic isomerization is a process used to increase the octane number of light naphtha fraction and thus aids in extending the life of automobile engines. Researchers are still working to prepare more effective and less expensive isomerization catalysts to replace the costly previous catalysts. Ongoing challenges in this field seek to design highly active isomerization catalysts operated under moderate conditions while keeping high branched-isomer selectivity. Heteropolyacids (HPA) have been presented as the most capable substitutes to fulfill the requirements. They are considered bifunctional catalysts that perform dehydrogenation /isomerization followed by hydrogenation because of their firm acidity and redox properties. Some catalytic-isomerization studies were started utilizing HPA in combination with platinum, which significantly improves the selectivity and stability. Thus, HPA-based bifunctional catalysts can provide enough acid and hydrogenation–dehydrogenation sites sufficiently. However, the most ongoing challenge in this field is the poor thermal stability of HPAs, which limits their use at higher temperatures for vapour-phase reactions. This review aims to highlight the recent progress in catalytic isomerization of alkanes using heteropolyacids supported on different carriers, with and without noble metals.
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| format | Article |
| id | doaj-art-446269f8cbed4b9981a0eaac70f61689 |
| institution | Kabale University |
| issn | 2521-9154 2521-9162 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Al-Nahrain Journal for Engineering Sciences |
| record_format | Article |
| series | مجلة النهرين للعلوم الهندسية |
| spelling | doaj-art-446269f8cbed4b9981a0eaac70f616892025-01-11T14:13:19ZengAl-Nahrain Journal for Engineering Sciencesمجلة النهرين للعلوم الهندسية2521-91542521-91622024-12-0127410.29194/NJES.27040413Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive ReviewAlaa J. Awadh0Saad H. Ammar1Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, IraqDepartment of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, Iraq Catalytic isomerization is a process used to increase the octane number of light naphtha fraction and thus aids in extending the life of automobile engines. Researchers are still working to prepare more effective and less expensive isomerization catalysts to replace the costly previous catalysts. Ongoing challenges in this field seek to design highly active isomerization catalysts operated under moderate conditions while keeping high branched-isomer selectivity. Heteropolyacids (HPA) have been presented as the most capable substitutes to fulfill the requirements. They are considered bifunctional catalysts that perform dehydrogenation /isomerization followed by hydrogenation because of their firm acidity and redox properties. Some catalytic-isomerization studies were started utilizing HPA in combination with platinum, which significantly improves the selectivity and stability. Thus, HPA-based bifunctional catalysts can provide enough acid and hydrogenation–dehydrogenation sites sufficiently. However, the most ongoing challenge in this field is the poor thermal stability of HPAs, which limits their use at higher temperatures for vapour-phase reactions. This review aims to highlight the recent progress in catalytic isomerization of alkanes using heteropolyacids supported on different carriers, with and without noble metals. https://nahje.com/index.php/main/article/view/1243Catalytic IsomerizationAlkanesKegginHeteropolyacidsSupported |
| spellingShingle | Alaa J. Awadh Saad H. Ammar Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review مجلة النهرين للعلوم الهندسية Catalytic Isomerization Alkanes Keggin Heteropolyacids Supported |
| title | Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review |
| title_full | Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review |
| title_fullStr | Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review |
| title_full_unstemmed | Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review |
| title_short | Advances in Catalytic Isomerization Using Heteropolyacid-Based Nanocomposites: A Comprehensive Review |
| title_sort | advances in catalytic isomerization using heteropolyacid based nanocomposites a comprehensive review |
| topic | Catalytic Isomerization Alkanes Keggin Heteropolyacids Supported |
| url | https://nahje.com/index.php/main/article/view/1243 |
| work_keys_str_mv | AT alaajawadh advancesincatalyticisomerizationusingheteropolyacidbasednanocompositesacomprehensivereview AT saadhammar advancesincatalyticisomerizationusingheteropolyacidbasednanocompositesacomprehensivereview |