Abstract
A study has been made of the catalytic and acidic properties together with the surface composition of the zeolite HZSM-5 modified by gallium by hydrothermal treatment with a sodium gallate solution and also by impregnation with gallium nitrate solution. It has been established that the first method of introducing gallium produces a more selective catalyst for aromatization of n-butane. It has been shown that under the conditions of the catalytic reaction several types of active centers incorporating Ga are formed: Ga2O3 on the zeolite surface, gallium ions inside the zeolite canals, and gallium atoms at the surface of and in the lattice that are bonded to OH groups.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2726–2732, December, 1991.
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Shevchenko, D.P., Dergachev, A.A., Zhuravlev, G.I. et al. Catalytic properties, surface composition, and acidity of Ga-ZSM-5 catalysts for aromatization of lower paraffins. Russ Chem Bull 40, 2373–2378 (1991). https://doi.org/10.1007/BF00959704
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DOI: https://doi.org/10.1007/BF00959704