2021/07/15 by Yu Zhou, Jianlin Zhang, Lei Wang +19 · 2 citations
Chemical Engineering · Chemistry · Engineering · #Catalysts for Methane Reforming #Membrane Separation and Gas Transport #Zeolite Catalysis and Synthesis
paper · doi:10.1126/science.aax5776
openalex publication_date 2021/07/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/25
The development of low-cost, efficient physisorbents is essential for gas adsorption and separation; however, the intrinsic tradeoff between capacity and selectivity, as well as the unavoidable shaping procedures of conventional powder sorbents, greatly limits their practical separation efficiency. Herein, an exceedingly stable iron-containing mordenite zeolite monolith with a pore system of precisely narrowed microchannels was self-assembled using a one-pot template- and binder-free process. Iron-containing mordenite monoliths that could be used directly for industrial application afforded record-high volumetric carbon dioxide uptakes (293 and 219 cubic centimeters of carbon dioxide per cubic centimeter of material at 273 and 298 K, respectively, at 1 bar pressure); excellent size-exclusive molecular sieving of carbon dioxide over argon, nitrogen, and methane; stable recyclability; and good moisture resistance capability. Column breakthrough experiments and process simulation further visualized the high separation efficiency.