Synlett 2025; 36(03): 264-268
DOI: 10.1055/s-0043-1775366
letter

Aliphatic Olefin Epoxidation with Hydrogen Peroxide Catalyzed by an Integrated Mn/TS-1/N System

Shanxiu Yang
b   State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization; State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. of China
,
Yuyu Liu
a   Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. of China
b   State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization; State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. of China
,
Zhang Zhang
a   Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. of China
,
Bo Qian
b   State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization; State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. of China
› Institutsangaben
This research was supported by the PetroChina Innovation Foundation, and the Science and Technology Program of Gansu Province (Grant No. 23ZDFA016, 21ZD4WA021, 22ZD6GA003, and 21JR7RA096).


Abstract

Propylene liquid-phase epoxidation with 50–75% H2O2 is an important process for the industrial production of propylene oxide (PO). To realize a propylene epoxidation process that proceeds with low hydrogen peroxide concentration, we developed an integrated Mn/TS-1/N catalytic system via in-situ reaction of Mn/TS-1 with an N-donor ligand, affording the PO product in excellent yield with only 30 wt% H2O2. Other long-chain aliphatic epoxides were also readily synthesized by this catalytic epoxidation system. Moreover, in addition to the standard micro-pressure reactor, a continuous-flow microreactor was developed that executed the hydrogen peroxide propylene oxide (HPPO) process with excellent efficiency for 1300 hours. This innovative Mn/TS-1/N catalyzed epoxidation represents a promising direction for advancing HPPO industrial processes, offering improved efficiency while minimizing the reliance on high concentrations of H2O2.

Supporting Information



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Eingereicht: 02. April 2024

Angenommen nach Revision: 13. Mai 2024

Artikel online veröffentlicht:
28. Mai 2024

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