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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.
Project: R-143-000-B07-114
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.
ISSN: 0021-9517
DOI: 10.1016/j.jcat.2021.11.026
Rights: © 2021 Elsevier Inc. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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