Study of the Stability of the Gallium-Containing Catalyst in the course of Conversion of Gaseous C₁-C₆ Hydrocarbons into Aromatic Compounds

Abstract

A study was made on the duration of the single-pass lifespan of the gallium-containing catalyst in the course of conversion of a model mixture of C1-C6 hydrocarbons into aromatic compounds. Using temperature-programmed desorption of ammonia, it has been found that some acid sites of the catalyst were irreversibly deactivated as a result of the reaction and oxidative regeneration. It has been shown that the gallium-containing catalyst characterized by high activity and stability in the course of aromatization of lower alkanes was able to withstand a certain number of reaction-regeneration cycles without reducing its activity.

Review on the Catalytic Conversion of Naphtha to Aromatics: Advances and Outlook

“…Metal-impregnated ZSM-5 acts as a bifunctional catalyst with Brønsted and Lewis acid sites due to the zeolite and electron-deficient metals, respectively. The aromatization of a mixture of C 1 −C 6 hydrocarbons was performed 24 over a Ga-ZSM-5 (hydrothermal synthesis) catalyst. The catalyst retained a high aromatization activity over 178 h and withstood three oxidative regeneration cycles without a reduction in activity.…”