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Issue 11, 2016
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Role of naphthalene during the induction period of methanol conversion on HZSM-5 zeolite

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Abstract

The role of methylnaphthalenes in a methanol to hydrocarbons (MTH) reaction on HZSM-5 zeolite was systematically studied on a fixed-bed reaction system. As this is a polycyclic aromatic species, it was interesting to find that co-feeding a small amount of naphthalene could also promote methanol conversion at a low temperature. For the first time, methylnaphthalenes were found to be able to act as initial active HCP species on HZSM-5. The introduced naphthalene could help generate more active methylbenzene HCP species and enhance the aromatic-based cycle during the induction period. As a result, ethene selectivity was promoted due to the co-fed naphthalene. Moreover, despite the large molecular size of naphthalene, it can still function as an active HCP species on the internal acid sites of the HZSM-5 catalyst.

Graphical abstract: Role of naphthalene during the induction period of methanol conversion on HZSM-5 zeolite

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Supplementary files

Article information


Submitted
22 Dec 2015
Accepted
11 Mar 2016
First published
14 Mar 2016

Catal. Sci. Technol., 2016,6, 3737-3744
Article type
Paper

Role of naphthalene during the induction period of methanol conversion on HZSM-5 zeolite

L. Qi, J. Li, Y. Wei, L. Xu and Z. Liu, Catal. Sci. Technol., 2016, 6, 3737
DOI: 10.1039/C5CY02238J

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