Official websites use. Share sensitive information only on official, secure websites. 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. These results suggest an alternative route to the design and preparation of deactivation-resistant zeolite catalysts.
For the methanol-to-hydrocarbons process, coke build can rapidly deactivate the zeolite catalyst. Here the authors show that the addition of liquid metal gallium can reduce coke deposition and increase catalyst lifetime. Nowadays, the catalytic conversion of source-abundant methanol molecules via methanol-to-hydrocarbons MTH reaction is considered one of the most promising approaches for producing valuable chemicals and fuels 1 β 4.
Among them, light olefins ethylene, propylene, and butylene and aromatics are highly desirable since they could act as essential industrial feedstocks for synthesizing polymers, pharmaceuticals and chemicals, etc 4 β 6.
According to the latest results, the MTH reaction proceeds according to a double-cycle mechanism with the production of paraffins and olefins by the olefin cycle and ethylene and aromatics by the aromatics cycle 7. The specific products of MTH can be tuned into olefin-rich methanol-to-olefins; MTO or aromatic-rich methanol-to-aromatics; MTA mixtures by optimizing catalysts and reaction conditions 1.
