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Direct partial oxidation of methane over ZSM-5 catalyst: effects of additives

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Abstract

Previously, it was reported that the direct partial oxidation (DPO) of CH4 with O2 over HZSM-5 catalysts produces C5+ hydrocarbon liquids when the feed contains a propane or propene additive. This work studies additive effects on C5+ production in this system by processing a CH4/C3H8 feed with subsequent removal of the C3 additive and by processing natural gas feed. Results show C5+ production is maintained at constant yields for HZSM-5 catalysts having different zeolitic Al contents after removal of the C3 additive. Mechanistic implications are discussed. Natural gas DPO consistently produced C5+ liquids due to the presence of C2+ components in the feed. While C5+ yields from natural gas DPO are higher than those observed for CH4/C3 feeds, increasing feed O2 concentration, and thus conversion, deleteriously affected C5+ selectivity.

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Author notes

  1. R. E. Palermo

    Present address: Department of Physical Chemistry, Hoffman-LaRoche, 340 Kingsland St., 07110, Nutley, NJ, USA

Authors and Affiliations

  1. Mobil Research & Development Corporation, Central Research Laboratory, PO Box 1025, 08543-1025, Princeton, NJ, USA

    S. Han, R. E. Palermo, J. A. Pearson & D. E. Walsh

Authors
  1. S. Han
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  2. R. E. Palermo
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  3. J. A. Pearson
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  4. D. E. Walsh
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Han, S., Palermo, R.E., Pearson, J.A. et al. Direct partial oxidation of methane over ZSM-5 catalyst: effects of additives. Catal Lett 16, 263–268 (1992). https://doi.org/10.1007/BF00764338

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  • DOI: https://doi.org/10.1007/BF00764338

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