Synthesis and molecular sieving mechanism of millet-derived carbon molecular sieves for separation of C4 olefins

Pressure-pyrolyzed millet-derived carbon molecular sieves achieve >20 000 selectivity for C 4 H 6 over n -C 4 H 8 /i-C 4 H 8 via precisely tuned pore size distribution, enabling highly efficient dynamic separation of butadiene from C4 olefin mixtures.