Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene
The preparation of high efficiency hydrocracking (HCK) catalyst is the key to the production of BTX (benzene, toluene and xylene) from polycyclic aromatic hydrocarbons (PAHs). In this work, the recrystallized Y zeolite (RCY) was obtained by structural reorganization of the microporous parent Y zeoli...
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| Natura: | Articolo |
| Lingua: | inglese |
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KeAi Communications Co., Ltd.
2025-12-01
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| Serie: | Carbon Resources Conversion |
| Soggetti: | |
| Accesso online: | https://doi.org/10.1016/j.crcon.2025.100326 http://www.sciencedirect.com/science/article/pii/S2588913325000249 |
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| _version_ | 1878737465498402816 |
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| author | Xiaoyang Kong Jinlin Mei Zhentao Liu Yutong Zou Enhua Wang Wei Wang Chunya Wang Chunming Xu Xilong Wang |
| author_browse | Chunming Xu Chunya Wang Enhua Wang Jinlin Mei Wei Wang Xiaoyang Kong Xilong Wang Yutong Zou Zhentao Liu |
| author_facet | Xiaoyang Kong Jinlin Mei Zhentao Liu Yutong Zou Enhua Wang Wei Wang Chunya Wang Chunming Xu Xilong Wang |
| author_sort | Xiaoyang Kong |
| collection | DOAJ |
| description | The preparation of high efficiency hydrocracking (HCK) catalyst is the key to the production of BTX (benzene, toluene and xylene) from polycyclic aromatic hydrocarbons (PAHs). In this work, the recrystallized Y zeolite (RCY) was obtained by structural reorganization of the microporous parent Y zeolite (PY), and a series of Ni/RCY catalysts with different metal–acid active sites were prepared by ethylenediamine coordination impregnation, which were used for the BTX production by hydrocracking of naphthalene. The suitable acidity and hierarchical pore structure of Ni/RCY could promote the dispersion of Ni metal, thus forming small-sized nanoparticles, which is in favor of the accessibility and diffusion of naphthalene. Besides, the electron-deficient Ni species between adjacent acid sites and metals could be generated on Ni/RCY, which could improve the metal-support interaction (MSI) and catalytic activity. Ni/RCY-4 catalyst showed the superior hydrocracking conversion (99.7 %), BTX yield (39.1 %), the reaction rate constant (k, 3.1 h−1) and turnover frequency (TOF, 16.6 h−1) of selective hydrocracking. The activation energy was lowest (64.1kJ·mol−1) among the reported catalysts in the literature. Moreover, the possible reaction mechanism of selective hydrocracking of naphthalene to BTX was further proposed. |
| doi_str_mv | 10.1016/j.crcon.2025.100326 |
| format | Article |
| id | doaj-7f4426fb7e0c4659b3acf28e72e14743 |
| institution | Biblioteca Central PEMEX |
| issn | 2588-9133 |
| language | English |
| publishDate | 2025-12-01 |
| publishDateRange | 2025-12-01 |
| publishDateSort | 2025-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| publisherStr | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Carbon Resources Conversion |
| spelling | doaj-7f4426fb7e0c4659b3acf28e72e14743engKeAi Communications Co., Ltd.Carbon Resources Conversion2588-91332025-12-018410032610.1016/j.crcon.2025.100326Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthaleneXiaoyang Kong0Jinlin Mei1Zhentao Liu2Yutong Zou3Enhua Wang4Wei Wang5Chunya Wang6Chunming Xu7Xilong Wang8State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR ChinaState Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR ChinaState Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR ChinaState Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR ChinaState Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR ChinaCollege of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, PR China; Corresponding authors.State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR China; Corresponding authors.State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR ChinaState Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, PR China; Corresponding authors.The preparation of high efficiency hydrocracking (HCK) catalyst is the key to the production of BTX (benzene, toluene and xylene) from polycyclic aromatic hydrocarbons (PAHs). In this work, the recrystallized Y zeolite (RCY) was obtained by structural reorganization of the microporous parent Y zeolite (PY), and a series of Ni/RCY catalysts with different metal–acid active sites were prepared by ethylenediamine coordination impregnation, which were used for the BTX production by hydrocracking of naphthalene. The suitable acidity and hierarchical pore structure of Ni/RCY could promote the dispersion of Ni metal, thus forming small-sized nanoparticles, which is in favor of the accessibility and diffusion of naphthalene. Besides, the electron-deficient Ni species between adjacent acid sites and metals could be generated on Ni/RCY, which could improve the metal-support interaction (MSI) and catalytic activity. Ni/RCY-4 catalyst showed the superior hydrocracking conversion (99.7 %), BTX yield (39.1 %), the reaction rate constant (k, 3.1 h−1) and turnover frequency (TOF, 16.6 h−1) of selective hydrocracking. The activation energy was lowest (64.1kJ·mol−1) among the reported catalysts in the literature. Moreover, the possible reaction mechanism of selective hydrocracking of naphthalene to BTX was further proposed.http://www.sciencedirect.com/science/article/pii/S2588913325000249Ni-based catalystsHierarchical porous Y zeoliteBTXNaphthaleneSelective hydrocracking |
| spellingShingle | Xiaoyang Kong Jinlin Mei Zhentao Liu Yutong Zou Enhua Wang Wei Wang Chunya Wang Chunming Xu Xilong Wang Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene Carbon Resources Conversion Ni-based catalysts Hierarchical porous Y zeolite BTX Naphthalene Selective hydrocracking |
| title | Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene |
| title_full | Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene |
| title_fullStr | Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene |
| title_full_unstemmed | Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene |
| title_short | Regulating metal–acid active sites in hierarchical porous Ni/Y for selective hydrocracking of naphthalene |
| title_sort | regulating metal acid active sites in hierarchical porous ni y for selective hydrocracking of naphthalene |
| topic | Ni-based catalysts Hierarchical porous Y zeolite BTX Naphthalene Selective hydrocracking |
| url | https://doi.org/10.1016/j.crcon.2025.100326 http://www.sciencedirect.com/science/article/pii/S2588913325000249 |
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