Dynamic confinement of SAPO-17 cages on the selectivity control of syngas conversion.

ABSTRACT: The OXZEO (oxide-zeolite) bifunctional catalyst concept has enabled selective syngas conversion to a series of value-added chemicals and fuels such as light olefins, aromatics and gasoline. Herein we report for the first time a dynamic confinement of SAPO-17 cages on the selectivity control of syngas conversion observed during an induction period. Structured illumination microscopy, intelligent gravimetric analysis, UV-Raman, X-ray diffraction, thermogravimetry and gas chromatography-mass spectrometer analysis indicate that this is attributed to the evolution of carbonaceous species as the reaction proceeds, which gradually reduces the effective space inside the cage. Consequently, the diffusion of molecules is hindered and the hindering is much more prominent for larger molecules such as

SUBMITTER: Wang H 

PROVIDER: S-EPMC9477199 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature