Nature communications · 2024
Liquid metals for boosting stability of zeolite catalysts in the conversion of methanol to hydrocarbons.
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Zhou Yong, Santos Sara, Shamzhy Mariya, Marinova Maya, Blanchenet Anne-Marie, Kolyagin Yury G, Simon Pardis, Trentesaux Martine, Sharna Sharmin, Ersen Ovidiu, Zholobenko Vladimir L, Saeys Mark, Khodakov Andrei Y, Ordomsky Vitaly V
Аннотация
Methanol-to-hydrocarbons (MTH) process has been considered one of the most practical approaches for producing value-added products from methanol. However, the commonly used zeolite catalysts suffer from rapid deactivation due to coke deposition and require regular regeneration treatments. We demonstrate that low-melting-point metals, such as Ga, can effectively promote more stable methanol conversion in the MTH process by slowing coke deposition and facilitating the desorption of carbonaceous species from the zeolite. The ZSM-5 zeolite physically mixed with liquid gallium exhibited an enhanced lifetime in the MTH reaction, which increased by a factor of up to ~14 as compared to the parent ZSM-5. These results suggest an alternative route to the design and preparation of deactivation-resistant zeolite catalysts.