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Alkane cracking reactions in zeolites with coadsorbed metal halides

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Abstract

HY which is loaded with SbF5, BCl3, or BF3 at low coverages, one metal halide molecule per Brønsted acid site, is shown to be active in the isomerization and cracking of n-hexane and n-butane at room temperature. In contrast, NaY with the same metal halide loading shows greatly reduced activity under identical reaction conditions. The cracking reaction was repeated with DY in place of HY, demonstrating deuterium incorporation into the hexane isomer and light alkane products through interaction with the Brønsted site. Flow reactor studies demonstrate that the conversion is not constant as a function of time on stream, going through an induction period, reaching a maximum, at around 400 s, and then decaying to ~1% after 1 h.

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Authors and Affiliations

  1. Department of Chemistry, United States Military Academy, West Point, NY 10996, USA

    W.P. Fletcher III & A.I. Biaglow

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  1. W.P. Fletcher III
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  2. A.I. Biaglow
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Fletcher III, W., Biaglow, A. Alkane cracking reactions in zeolites with coadsorbed metal halides. Catalysis Letters 54, 217–222 (1998). https://doi.org/10.1023/A:1019069031059

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