首页|Solvent-free, efficient synthesis of methyl phenyl carbonate over an SBA-15 loaded Pb-Bi bimetallic catalyst
Solvent-free, efficient synthesis of methyl phenyl carbonate over an SBA-15 loaded Pb-Bi bimetallic catalyst
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Methyl phenyl carbonate (MPC) is one of the versatile carbonates; in particular, it is an important component in lithium-ion batteries. In recent years, the catalytic synthesis of MPC has become an important topic, but the development of highly active catalysts is still challenging. In this study, SBA-15-loaded nano-sized Pb-Bi catalysts with different Pb/Bi molar ratios were prepared by deposition-precipitation to improve the efficiency and selectivity. To investigate the relationship between the structure and performance of the catalysts, XRD, BET, SEM-EDS, HRTEM, H2-TPR, and XPS characterization, as well as catalytic activity and stability tests, were conducted. Results revealed that Pb-Bi/SBA-15 can efficiently catalyze the synthesis of MPC under solvent-free conditions, with the highest catalytic activity obtained over 6 Pb-lBi/SBA-15. SBA-15 with a large pore size and a high specific surface area was suitable as catalyst carrier, and the average diameter of Pb-Bi oxide particles was -3.57 nm. The addition of Bi led to the improved dispersion of active components, which were highly and evenly dispersed on the SBA-15 surface. Furthermore, an appropriate proportion of Pb and Bi on SBA-15 was conducive to the considerable enhancement of the catalytic activity. Besides, Pb-Bi/SBA-15 also exhibited good durability and recyclability, making it a promising catalytic material for the synthesis of various carbonates.
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering Henan Normal University, Xinxiang 453007, China
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