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Oxidation of Propylene to Propylene Oxide with Molecular Oxygen by Pd(OAc)2/Ti—Al-HMS/CH3OH Catalyst System

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Abstract

The Pd(OAc)2/Ti—Al-HMS/CH3OH catalyst system showed 61.2% selectivity for PO at 42.8% propylene conversion for the oxidation of propylene with molecular oxygen in an autoclave reactor at 373 K for 4 h. The catalyst is reusable using the filtration method or the vacuum distillation method after reaction. It is likely that a Ti cyclic peracid-like intermediate was formed in the system made up of a Ti site, an oxygen molecule and a methanol molecule. The Pd species activates the oxygen molecule and the Al site plays a role for stabilizing the Ti cyclic peracid-like intermediate to improve the yield of propylene oxide from the oxidation of propylene with molecular oxygen.

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Authors and Affiliations

  1. Research Institute for Green Technology, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 5, 1-1-1, Higashi, Tsukuba, Ibaraki, 305-8565, Japan

    Yanyong Liu, Kazuhisa Murata & Megumu Inaba

Authors
  1. Yanyong Liu
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  2. Kazuhisa Murata
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  3. Megumu Inaba
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Correspondence to Yanyong Liu.

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Liu, Y., Murata, K. & Inaba, M. Oxidation of Propylene to Propylene Oxide with Molecular Oxygen by Pd(OAc)2/Ti—Al-HMS/CH3OH Catalyst System. Catalysis Letters 93, 109–112 (2004). https://doi.org/10.1023/B:CATL.0000016957.08578.55

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  • DOI: https://doi.org/10.1023/B:CATL.0000016957.08578.55

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