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https://hdl.handle.net/10356/163923
Title: | Mg-stabilized subnanometer Rh particles in zeolite Beta as highly efficient catalysts for selective hydrogenation | Authors: | Zhang, Hongwei Zhong, Lixiang Bin Samsudin, Ismail Okumura, Kazu Tan, Hui-Ru Li, Shuzhou Jaenicke, Stephan Chuah, Gaik-Khuan |
Keywords: | Science::Chemistry | Issue Date: | 2022 | Source: | Zhang, H., Zhong, L., Bin Samsudin, I., Okumura, K., Tan, H., Li, S., Jaenicke, S. & Chuah, G. (2022). Mg-stabilized subnanometer Rh particles in zeolite Beta as highly efficient catalysts for selective hydrogenation. Journal of Catalysis, 405, 489-498. https://dx.doi.org/10.1016/j.jcat.2021.11.026 | Project: | R-143-000-B07-114 R-143-000-667-114 R-143-003-617-597 |
Journal: | Journal of Catalysis | Abstract: | Nanoparticles are of interest in heterogeneous catalysis because of their excellent activity associated with atoms in a low coordination environment. However, their high reactivity becomes a drawback where selectivity is desired, compounded by their propensity towards agglomeration. Here, we show that stable subnanometric Rh particles can be prepared in a Mg-doped zeolite Beta based on the electrostatic interaction of the negatively charged zeolitic framework and the Rh3+ precursor. The Mg ions are incorporated into the zeolite framework whereas the Rh is located in the channels adjacent to the Mg. With only 0.27 and 0.5 wt% Mg and Rh, respectively, the Rh/Mg-Beta catalysts were highly active with > 94 % selectivity for the hydrogenation of phenol to cyclohexanone, an important intermediate for the production of Nylon. Key to the selectivity is the formation of the C=O double bond early in the reaction sequence, aided by the basicity of the Mg-Beta support. | URI: | https://hdl.handle.net/10356/163923 | ISSN: | 0021-9517 | DOI: | 10.1016/j.jcat.2021.11.026 | Schools: | School of Materials Science and Engineering | Rights: | © 2021 Elsevier Inc. All rights reserved. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | MSE Journal Articles |
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