Abstract

Heteronuclear two-dimensional J-resolved 13C spectra of the products of the catalytic conversion of methanol on zeolite H-ZSM-5 can determine the number of protons attached to each carbon atom in the various organics and the details of 13C 1H couplings, enabling us to make firm assignments for a number of resonances. A signal previously attributed to a mixture of n-hexane, isopentane and n-heptane, can now be unambiguously assigned to isopentane alone.

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